Develop Bugs

Battery saving tips

Before we get an update (well if it will sort the problem...) I wonder if we could collect the best tricks and tips how to save battery life on Desire? Some of you have experience of apps and widgets that drain the battery fast, then we have the usual (turn of 3g, wifi, avoid white backgrounds etc).
What you think? Lets share what we found out!

- Turn off any auto-update for anything unless you really (really) need them
- Even if you really (REALLY) need auto-update, set auto-update period to longer interval (why do you want to get weather update every hour? just an example)
- Again, review your auto-update apps/widgets!!!
- Turn off GPS. Turn this on only when you are going to use sat nav app
- Turn off Wi-Fi. It is obvious, turn it on when needed and dont forget to turn off!
- Turn off Bluetooth, unless you want to use it (headphone???)
- Don't use task killer of any kind unless you really (REALLY) know what you are doing. Let Android OS take care of killing those inactive apps, Android is designed for this.
- Set your screen brightness as low as possible your eyes could use. Full brightness is really not necessary unless you want to show off to iPhone users
- Limit your home screen widgets, think if you really want to use to have "quick look". Otherwise you can just put icon shortcut, one click and there you go!
- Choose AMOLED friendly apps. Meaning, avoid any white or extreme bright UI / background colors. For example: The XDA Android app created by Tapatalk is AMOLED friendly compared to browsing via web, because it uses black color background. Find apps that you can customize the color
- Choose AMOLED friendly themes. I would replace the default HTC big clock that uses white color with other that uses black color.
That's for now

The first charge is important for the battery and your device too. The battery has to be charged long time, 12-16 hours first time to use all the chemicals it has. Some says that the polymer batteries don't need the first big charge but specialist's says it's good practise to do it with the LiPoly batteries too.
Note: it's best practise to wait until the battery reaches it's critical level (around 5%) before you start the first big charge. The first charge also calibrates your devices power meter.

Mastoid said:
The first charge is important for the battery and your device too. The battery has to be charged long time, 12-16 hours first time to use all the chemicals it has. Some says that the polymer batteries don't need the first big charge but specialist says it's good practice to do it with the LiPoly batteries too.
Note, that you have to wait until the battery reaches it's critical level (around 5%) before start the first big charge. The first charge also calibrates your devices power meter.
Click to expand...
Click to collapse
Is this really really true? I hopefully will be getting a new Desire tomorrow (for exchange) and when I received my previous one, I didn't drain the battery and then charge for 12 hours. I would not mind doing it if it really improves the battery life but I've seen conflicting articles/opinions about this whole 12 hours charge thing

From HTC FAQ
http://www.htc.com/www/faqs.aspx?p_id=312&cat=80&id=127114
When I first receive my phone, do I need to charge the battery?
Your phone ships with a partially charged battery so it's suggested you charge your battery fully before first use. The battery is fully charged when the notification LED turns green.
It is recommended to charge the battery for 8 hours the first time to ensure that the battery has had time to recharge.
Note: It is recommended that you only use the charger and cable provided in the box your phone was shipped in.
Click to expand...
Click to collapse
HoneyBeFly said:
Is this really really true? I hopefully will be getting a new Desire tomorrow (for exchange) and when I received my previous one, I didn't drain the battery and then charge for 12 hours. I would not mind doing it if it really improves the battery life but I've seen conflicting articles/opinions about this whole 12 hours charge thing
Click to expand...
Click to collapse

Thanks for that although if I remember correctly on the Desire quick quide it says I need to charge it for 3 hours for the first time. Regardless, it insinuates that I shouldn't drain the battery before the first charge

Please try and read about how a li-ion battery works.
NiCd and NiMH need longer (and slow) initial charge(s). Because indeed the battery still needs to form. Usually 5 charges, but cheap ones reach max capacity after eg 15 charges.
This is NOT the case for li-ion batteries. They have max capacity as soon as they roll out of the factory. And they start degrading from that point.
Keeping the Desire charged longer has no use. Because as soon as the battery is full, the internal chip will cut off the charge. So you can just as well plug out your charger.
There are so many voodoo stories about batteries, even from manufacturers. Probably because each battery chemistry need different handling. Whereas li-ion batteries are actually much more easy. They don't last too long though :/

updates
Every now and then you get a notification of available updates to apps... anyone knows how this works and if it does drain the battery? Is there a way to turnthe update check off?

Can you try this:
http://androidcommunity.com/forums/f12/how-to-turn-off-application-upgrade-check-12723/
Let us know the result.
jannen said:
Every now and then you get a notification of available updates to apps... anyone knows how this works and if it does drain the battery? Is there a way to turnthe update check off?
Click to expand...
Click to collapse

How to preserve the battery over time?

Hi;
From JerryRigEverything's Teardown video I can tell that is not easy to replace the battery on the G7 plus if would void the water resistance and since I'll keep this phone for at least 2 years I have the following question about how to preserve the battery in the best conditions possible:
In order prevent the battery degradation, is it better to use: Fast or Wireless Charger?
Do you have any other advice regarding this topic?
3000 mAh isn't that great to begin with and if you add that it could get worse over time then it's better to take precautions. I wouldn't care that much if replacing the battery wasn't that hard. I mean it would require a good technician in order to get a proper reparation and I'm not sure I know one.
I apologize for the spelling or grammar mistakes, I'm not a native speaker and I'm still learning.

Charge whenever you can and dont let it go under 50%
The more you discharge it the chorter lifespan it get

Disable all crap you do not use.. When at home, and phone not used much. Turn off Wifi, BT, Location and even Data..

maydayind said:
Charge whenever you can and dont let it go under 50%
The more you discharge it the chorter lifespan it get
Click to expand...
Click to collapse
According to what I've read. I think the ideal scenario would be mantaining the battery charge between 20% and 80%.

doubledragon5 said:
Disable all crap you do not use.. When at home, and phone not used much. Turn off Wifi, BT, Location and even Data..
Click to expand...
Click to collapse
Yes. That's exactly what I do with every smartphone I've own. I usually go heave on optimization of every single aspect regarding performance and battery life.
I use WIFI on, Data off, BT off, location off, auto brightness setting, Always on display off, no facial unlock, WhatsApp tweak to get only important notifications, the display is set down to 1080p instead of 1440p. When I play PUBG mobile I turn on Airplain mode and plug in headphones.

I purchased Acubattery. It has alarms that let you know if you are overcharged (more than 80% it says).
It also does a really good job of monitoring your current capacity and giving your hints on what is draining your device during the day. It will estimate your current battery capacity, which is nice if your phone shows they battery condition as Good (whatever that means Huawei Nexus p6).
Basically your battery is going to self destruct, but I find this app really gives you a good amount of information to make good decisions about how you use your phone.

I disagree with every advice here!
Check out my thread from my last phone :
https://forum.xda-developers.com/xz...ry-restore-t3796461/post76653346#post76653346
Been reading dozen of threads on diffrent forums regarding people complaining about their poor battery health, performance, etc.
Here are my advices to obtain near 100% battery health as years passes by (I have an galaxy s3 from 2012 with 90% and an LG g3 dual sim from 2014 with 92% ???), it all has to do with user behavior:
1. Avoid not charging to at least 95% then discharging it to near 0% (example: you charge it from 0 to 50 then you go outside and discharge it to near 0)
2. Avoid high usage for more than 3 consecutive days.
3. Drain SLOWLY from 100 to 0 once a week. This drain must be done at least in 1,5 - 2 days.
4. Charge from 0 to 100 with phone off at least 1 time / week
5. Every 2 weeks Let the phone discharge in 2-3 days, with minimal use, like just calling.
6. Repeat nr. 3 as much as you can
7. Avoid putting to charge when the phone is hot.
8. Avoid charging while using the phone.
9. Avoid fast charging.
10. From 100 to 70 and from 30 to 10 go slowly.
11. Never let it discharged 5, 10, 20 % more than 1 day
12. Never charge from 20, 30 to 100.
And many more will come.
Cheers.
??????

joser0913 said:
Hi;
From JerryRigEverything's Teardown video I can tell that is not easy to replace the battery on the G7 plus if would void the water resistance and since I'll keep this phone for at least 2 years I have the following question about how to preserve the battery in the best conditions possible:
In order prevent the battery degradation, is it better to use: Fast or Wireless Charger?
Do you have any other advice regarding this topic?
3000 mAh isn't that great to begin with and if you add that it could get worse over time then it's better to take precautions. I wouldn't care that much if replacing the battery wasn't that hard. I mean it would require a good technician in order to get a proper reparation and I'm not sure I know one.
I apologize for the spelling or grammar mistakes, I'm not a native speaker and I'm still learning.
Click to expand...
Click to collapse
There are so many things that could affect your battery life over a 2yr period. I own both the G6 and G7 and the G6 still gives me pretty good standby and SOT after 2yrs.
General rule says you avoid fast charging wherever possible as this will affect battery over the long run. Avoid scenarios wherein the battery might overheat.
Also little things like simply living in an area with bad coverage will eat through your battery like nothing else.
If your worried about battery replacement, im fairly sure LG service centres do it for a pretty resonable price anyways.

Determining the Actual Battery Capacity on a new S9

AccuBattery shows estimate of 2740 mAh on S9 one week old. If true, I'm replacing the phone tomorrow, if for no better reason than a comparison. However, there must be a better way to determine the actual "depth of power" of a non-removable battery. (Actual amount of juice)
Can anyone tell me how to determine that? How do I know I've gotten what I paid for in a battery speced at 3000 mAh?

Not with apps
Only 100% accurate way would be hooking a test unit up to the actual battery

*Detection* said:
Not with apps
Only 100% accurate way would be hooking a test unit up to the actual battery
Click to expand...
Click to collapse
Do you mean by opening up the phone?
I do not see that as a good alternative in this situation.

Has no one created faux pas benchmarks such as playing a particular Youtube video for 1 hour (or variation) with Google Chrome, with wifi measured signal strength noted, Screen on 100% brightness or measured alternative, and noting any other variables, for various devices?
Could you post any known similar results, compilations?

harmonz said:
Do you mean by opening up the phone?
I do not see that as a good alternative in this situation.
Click to expand...
Click to collapse
What I mean is, stop listening to apps for something they cannot possibly measure accurately as it would have to be done with hardware

If you want more accurate estimate of the battery capacity through Accu Battery - do not forget to go to flight mode first and then charge your phone.
BTW my 1yr old s9 shows ~2715mah (and it actually says it approximate value).
Sent from my Galaxy S9 using XDA-Developers Legacy app

Sunslayer said:
If you want more accurate estimate of the battery capacity through Accu Battery - do not forget to go to flight mode first and then charge your phone.
BTW my 1yr old s9 shows ~2715mah (and it actually says it approximate value).
Sent from my Galaxy S9 using XDA-Developers Legacy app
Click to expand...
Click to collapse
Thanks for the reminder. I usually keep the phone off but have not always been vigilant about Flight Mode. Definitely no data, but I have sometimes left WiFi or Bluetooth. With as little activity as I get lately, I had assumed I was not using much if any mAh during the charge.
2715 mAh on a 1-year-old S9 seems impressive. Do you generally try to stop charge at 80% or let it go to 100%?
Do you charge overnight?
Do you generally let power go until the phone notification of charge at 15%?
Thanks,
Marc

Comparative test of different recent phones
I noticed that AccuBattery's Estimated Capacity can be tricked into reporting a higher value by having the screen on for a few minutes just before unplugging.
That is discouraging this one from trusting the algorithms for the AccuBattery, as also stated by 'Detection.'
I did run a preliminary test with a few phones.
2 hours run time, in safe mode, airplane mode, WiFi strength ~ -53dBm at a distance of 30 feet. Google Chrome browser, youtube running Battery Drainer 2 video, sans audio, 100% brightness. (I assume the S9 is at 100% when fully to the right and into the red line for a little bit of distance.)
1st phone a 3-month-old refurb with specs battery capacity of 3400 mAh ran about the same time as the S9 spec at 3000 mAh. Which would suggest either the S9 is in better condition or the refurb is in worse condition than originally considered.
I will probably run this again using a movie and audio though I'm limited on the one phone to play video with 'Drive' video player. Hopefully, the S9 can use this as well.
All suggestions welcome,
Thanks,
Marc

harmonz said:
Thanks for the reminder. I usually keep the phone off but have not always been vigilant about Flight Mode. Definitely no data, but I have sometimes left WiFi or Bluetooth. With as little activity as I get lately, I had assumed I was not using much if any mAh during the charge.
2715 mAh on a 1-year-old S9 seems impressive. Do you generally try to stop charge at 80% or let it go to 100%?
Do you charge overnight?
Do you generally let power go until the phone notification of charge at 15%?
Thanks,
Marc
Click to expand...
Click to collapse
I tend to stop charging at 85% (or around) occasionally to 100% when I forget to unplug the phone. I start charging at whatever percentage I notice it needs charging, sometime 15 sometime 25 sometime 40%
Sent from my Galaxy S9 using XDA-Developers Legacy app

[DISCUSSION] Use stock ROM for your battery's health

Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.

minhntp said:
Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.
Click to expand...
Click to collapse
I also felt the same...Though the charging speed on custom roms is higher...in terms of stability of current, Stock Rom is the best.

minhntp said:
Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.
Click to expand...
Click to collapse
In terms of stability, I have different results, when I charge using a custom rom the phone tends to stay cool, but when I used the stock rom the phone got a lot hotter then before charging.

Custom ROMs may not be utilizing QC properly. QC 2.0 has few discrete voltage/current steps, while QC 3.0 has many (200mA increments iirc) designed to strike a balance between charging speed and heat. Maybe it's getting stuck in QC 2.0 mode and the temperature feedback isn't working properly?
You could just use a non-fast-charging wireless charger, if you're only charging up at night. 5v/~1A is pretty much harmless, it's just on the slow side of things.
fyi, battery capacity (as tracked by the charging controller driver, I guess) is stored at sys/class/power_supply/bms/charge_full; it defaults to design capacity until a full charge cycle has been completed* and then I suppose is revised each time the driver tracks less energy has been stored after a complete charge. Cycle count, cell resistance and a couple other things are also stored here. I think all values are persistent until the battery is physically disconnected.
Might be worth doing a full discharge+charge (to 100%, then let it sit for a few hours to saturate) to see if your battery is worn enough to warrant pulling the phone apart. Accubattery does seem to be more or less accurate, so you charge while it's on you can get a real-time idea of how much has gone in.
* a full charge might be from 1% to 100%. It might be from 5% to 100%. Who knows! I've charged from 2% to 100% a couple times and not had cycle_count increase.
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
edit: hmm, thinking about it...bms = Battery Management System? (not this one specifically, of course)

Septfox said:
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
Click to expand...
Click to collapse
It is possible that you bought a smaller battery - but you should know that the capacity of Li** batteries increases within the first couple of cycles. Also usually the nominal capacity might be different from the real (typical) capacity. So you would need to meassure a.new original battery against your replacement battery (not take the value LG tells us for.granted)

daniu said:
It is possible that you bought a smaller battery - but you should know that the capacity of Li** batteries increases within the first couple of cycles. Also usually the nominal capacity might be different from the real (typical) capacity. So you would need to meassure a.new original battery against your replacement battery (not take the value LG tells us for.granted)
Click to expand...
Click to collapse
Li-po capacity hasn't really gone anywhere in a while, and I wouldn't expect cheap eBay batteries to be using the newest and best chemistry. It was definitely undersize/weight; I attached some pictures.
Because I wanted to be absolutely sure before I called the seller on it, I purposefully ran it four full cycles, then built up another two during normal use. The best capacity that the BMS ever rated it for was 2980mah, while Accubattery put in something like...3060mah once with subsequent charges in the 2900-3000 range.
While I get what you're saying, I find it unlikely that the BMS would set to the expected design capacity if they were using undersize batteries from the factory.
The reason being that at a guess, the battery "fuel gauge" is probably based on capacity_full, which = capacity_full_design until set. With a new phone that isn't charged to 100% (thus setting capacity_full), if using the phone down to 1% you'd risk either a) the phone suddenly shutting down at ~10% or b) overdischarge damage if the battery is actually less than the phone's design capacity.
Kind of a corner case though, I'll admit, since this would only be on the first run.
Last, I submit my own OEM battery for consideration: prior to taking it out, it had accumulated 537 cycles and had a recorded capacity of 2485mah. That's about what I'd expect from a 3300mah battery that was almost certainly used "normally" e.g. discharged daily, charged nightly and left on the tap at full charge for hours on end.
Like you said, though, the only way to know for sure would be testing a new OEM battery, and we've been fresh out of those for a year and a half now. Maybe someone could nab one from one of their newer models and test for science? I already have too many spare lipo cells laying around.

Septfox said:
Custom ROMs may not be utilizing QC properly. QC 2.0 has few discrete voltage/current steps, while QC 3.0 has many (200mA increments iirc) designed to strike a balance between charging speed and heat. Maybe it's getting stuck in QC 2.0 mode and the temperature feedback isn't working properly?
You could just use a non-fast-charging wireless charger, if you're only charging up at night. 5v/~1A is pretty much harmless, it's just on the slow side of things.
fyi, battery capacity (as tracked by the charging controller driver, I guess) is stored at sys/class/power_supply/bms/charge_full; it defaults to design capacity until a full charge cycle has been completed* and then I suppose is revised each time the driver tracks less energy has been stored after a complete charge. Cycle count, cell resistance and a couple other things are also stored here. I think all values are persistent until the battery is physically disconnected.
Might be worth doing a full discharge+charge (to 100%, then let it sit for a few hours to saturate) to see if your battery is worn enough to warrant pulling the phone apart. Accubattery does seem to be more or less accurate, so you charge while it's on you can get a real-time idea of how much has gone in.
* a full charge might be from 1% to 100%. It might be from 5% to 100%. Who knows! I've charged from 2% to 100% a couple times and not had cycle_count increase.
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
edit: hmm, thinking about it...bms = Battery Management System? (not this one specifically, of course)
Click to expand...
Click to collapse
Do you have sleep problem after changing the battery? After changing the battery, my phone doesn't go to sleep when the screen is off, so the battery just keeps draining. I'm using stock ROM. I don't know if this is a software of hardware issue.

minhntp said:
Do you have sleep problem after changing the battery? After changing the battery, my phone doesn't go to sleep when the screen is off, so the battery just keeps draining. I'm using stock ROM. I don't know if this is a software of hardware issue.
Click to expand...
Click to collapse
The only thing notable that happened was the battery stats getting wiped. Otherwise the phone behaved normally.
Try getting BetterBatteryStats, second post has the newest apk attached (2.3 iirc).
Start it up to get it established, Set Custom Ref. from the menu, shut the screen off for...ehh...20min.
Turn it back on, select Custom in the left drop-down menu and Current in the right drop-down menu.
Check Kernel Wakelocks and Partial Wakelocks using the top drop-down menu to see if anything sticks out.

Septfox said:
Li-po capacity hasn't really gone anywhere in a while, and I wouldn't expect cheap eBay batteries to be using the newest and best chemistry. It was definitely undersize/weight; I attached some pictures.
Because I wanted to be absolutely sure before I called the seller on it, I purposefully ran it four full cycles, then built up another two during normal use. The best capacity that the BMS ever rated it for was 2980mah, while Accubattery put in something like...3060mah once with subsequent charges in the 2900-3000 range.
While I get what you're saying, I find it unlikely that the BMS would set to the expected design capacity if they were using undersize batteries from the factory.
The reason being that at a guess, the battery "fuel gauge" is probably based on capacity_full, which = capacity_full_design until set. With a new phone that isn't charged to 100% (thus setting capacity_full), if using the phone down to 1% you'd risk either a) the phone suddenly shutting down at ~10% or b) overdischarge damage if the battery is actually less than the phone's design capacity.
Kind of a corner case though, I'll admit, since this would only be on the first run.
Last, I submit my own OEM battery for consideration: prior to taking it out, it had accumulated 537 cycles and had a recorded capacity of 2485mah. That's about what I'd expect from a 3300mah battery that was almost certainly used "normally" e.g. discharged daily, charged nightly and left on the tap at full charge for hours on end.
Like you said, though, the only way to know for sure would be testing a new OEM battery, and we've been fresh out of those for a year and a half now. Maybe someone could nab one from one of their newer models and test for science? I already have too many spare lipo cells laying around.
Click to expand...
Click to collapse
What is the full capacity when you put those 2 battery in?
I just bought a battery. This new one has 6 symbols each line (like the one you bought) and 2 lines of manufactured date. The old (original) one has 5 symbols each line and also 2 lines of manufatured date.
When I check "charge_full" after full charging, it shows 3312000 for the original battery and 3230000 for the new one, while the "charge_full_design" being 3312000 for both battery.

minhntp said:
What is the full capacity when you put those 2 battery in?
I just bought a battery. This new one has 6 symbols each line (like the one you bought) and 2 lines of manufactured date. The old (original) one has 5 symbols each line and also 2 lines of manufatured date.
When I check "charge_full" after full charging, it shows 3312000 for the original battery and 3230000 for the new one, while the "charge_full_design" being 3312000 for both battery.
Click to expand...
Click to collapse
All three batteries I've had showed the same 3312000 charge_full_design. But I'm not sure if this is relevant to us, aside from as a reference to compare to.
Out of curiosity and so I don't purposely give outright bad information, I went and looked at the kernel (up on github courtesy of lunar-kernels).
3300mah design capacity is set when the kernel is built (BLT34 battery profile, which is grabbed by the power manager).
I'm not sure where the number "3312000" specifically is coming from. I can't read the source for the BMS well enough to tell why it's coming up with that number, aside from it's a calculated result based on more than just the design capacity.
Based on the above and other behavior, I don't think any permanent information is stored with or retrieved from the battery itself; design parameters are set in the BLT34 profile and then the BMS amends certain things as it takes measurements. It assumes that whatever attached battery is actually 3300/3312mah until proven otherwise (calibrated with sufficient cycling).
Said measurements are stored ~somewhere~ outside of the ROM, recovery and download mode - mine persisted through the LAFsploit process and TWRP on both partitions - and cleared when power is lost. Maybe they're stored in RAM somewhere? Maybe the BMS notices the discontinuity in power and assumes a battery change, resetting everything? I'll try making sense of the kernel source to see...
The labeling difference is curious, and something I hadn't really given thought to. The newer ones have NOM and NYCE marks, which are Mexican safety approval things. It's interesting that the originals don't have them; maybe because LG doesn't make phones for the Mexican market and thus saw no need? I doubt these third-party manufacturers have gone out of their way to actually obtain said approval...probably just stuck them there to satisfy customs.
I bought a battery from another seller and installed it this weekend; it uses the 12-symbol style as well, has date+date code like the original (dated a rather shiny 2019.09.08!), and weighs the expected 48g/has an OE-style "stepped" back making it thicker.
Seems to charge fully and otherwise work as expected. charge_full still = charge_full_design, I'm not sure if this is because the BMS has determined that it's an OEM-capacity battery, or it hasn't cycled sufficiently to update. Gonna keep an eye on it. Pictures attached.
Edit: battery listing on ebay. Note if anyone else buys it: the suction cup that came with mine was 100% useless. Plan accordingly.
-
A further note on the smaller battery I bought: it did perform admirably. It had no issues when using the phone as a power supply (~2.5A sustained output), right down to where I stopped it at 5%, which is rather abusive for cells in this form-factor. It was just...well...smaller. It certainly wasn't a bad battery at all, it was just misrepresented. Lighter/slightly-smaller batteries would make great travel batteries, if the V30 were swap-friendly...
-

@Septfox
I hope you bought a good one.
The battery I bought lasts long, but also takes long to charge (about 2 hours). The phone shows fast-charging but when I check battery log in Hidden menu, it shows only Quick charge 2.0.
I found a way to reset the battery information, hopefully sellers don't use this to reset the cycle count.
There's a thread on xda that shows a method to reset battery information on HTC phones. That is holding down 2 volume buttons + power button (volume down + power for LG V30) in 2 minutes while the phone is being charged, let the phone restart as many times it takes in 2 minutes. And then charge the phone to full.
I did that and when I check in Hidden menu, the battery information was resetted to 3312000 full capacity and 0 cycle count.

minhntp said:
@Septfox
The battery I bought lasts long, but also takes long to charge (about 2 hours). The phone shows fast-charging but when I check battery log in Hidden menu, it shows only Quick charge 2.0.
Click to expand...
Click to collapse
QC 3.0 wouldn't outright increase the speed any; it exists to help reduce heat and provide more consistent charging.
If it makes you feel any better, mine is also getting stuck on QC 2.0. Judging by the way the Parallel Charging status flickers on and off as I move the cable and put pressure on the connector, I could probably stand to get a new charging port...
This is why wireless charging is a good idea. But now that I think about it, replacement boards are cheap on ebay ($5), so replacing it each time the battery is changed might be a good bit of cheap maintenance to do :good:
Have you tried a different cable and/or charger to see if your charging improves? Maybe you need a new port, too.
minhntp said:
I found a way to reset the battery information, hopefully sellers don't use this to reset the cycle count.
There's a thread on xda that shows a method to reset battery information on HTC phones. That is holding down 2 volume buttons + power button (volume down + power for LG V30) in 2 minutes while the phone is being charged, let the phone restart as many times it takes in 2 minutes. And then charge the phone to full.
I did that and when I check in Hidden menu, the battery information was resetted to 3312000 full capacity and 0 cycle count.
Click to expand...
Click to collapse
I find this slightly alarming, actually...
The normal button combination to hard-reset the phone is power+vol down. This might just be what's happening, and by making the phone do it repeatedly, the firmware might be interpreting it as a bootloop condition caused by something in memory and completely disconnecting power in an attempt to mitigate it (clearing the battery stats in the process). Probably harmless though.
Dunno that a seller would bother trying it, though. What do they get out of it, other than a seemingly-new battery with less capacity than it should have? It would just recalibrate when charged and show the real capacity in the hidden menu, and the game would be up :v

Septfox said:
QC 3.0 wouldn't outright increase the speed any; it exists to help reduce heat and provide more consistent charging.
If it makes you feel any better, mine is also getting stuck on QC 2.0
Click to expand...
Click to collapse
All V30 always show QuickCharge 2.0 in Nougat as well as Oreo. Not sure about Pie.
Speculation was it was a script error, that it was really 3.0 -- but falsely shows 2.0.
Can't remember if it was ever proven one way or the other.
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
I'm still on rooted Oreo, so I don't care.

ChazzMatt said:
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
Click to expand...
Click to collapse
I don't notice my phone charging any different. Even when using wired.
Sent from my LG-H932 using XDA Labs

ChazzMatt said:
All V30 always show QuickCharge 2.0 in Nougat as well as Oreo. Not sure about Pie.
Speculation was it was a script error, that it was really 3.0 -- but falsely shows 2.0.
Can't remember if it was ever proven one way or the other.
Click to expand...
Click to collapse
I read "the display may not be correct, so you should totally use this as an excuse to get a newer charger-doctor that supports QC".
...and you're completely right, I'm gonna go do that :v
ChazzMatt said:
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
Click to expand...
Click to collapse
Or to mitigate further aging by reducing internal heat. I also remember seeing somewhere that it was limited to 12w or 13w, now that you mention it, though that might have been for 15w wireless which has a reputation for slow-cooking the battery (in any phone, not just the V30).

Redmi Note 8 Pro not charging at 100% after less than a month of use

Hi, I'm currently experiencing some problems with my Redmi Note 8 Pro.
I've had my phone for less than a month, and it's starting to get issues with the battery.
The battery, whether I charge it with the original wall charger, or I use a computer to charge it, or o use an alternative wall charger (that is for slow charge), it can't get to 100%.
It gets stuck at 99% and says, full charge in 2 minutes, even though the 2 minutes have passed long time ago.
I haven't done a full battery drain, and I always try to use a slow charge charger.
I also haven't done a full cycle without using the phone, maybe that's the problem.
But I'm worried, and I need some help, because I got the phone (as I said) less than a month ago, I haven't even payed the first installment.
I'm still within the seller's warranty, but I need some advices to what can I do, because returning the phone to the seller, to make a change, is gonna cost me 15 to 20 days. And I don't have any other phone to use.
Please, if someone can give me some advice, or tell me what to do, it's completely welcome.
Thanks.
And by the way, I'm using the Global 128Gb version, if that helps.
Edit 29/01/2020: I did a full discharge, because I couldn't read the quotes earlier, and I didn't realize how big the problem could be. Now, the phone can't go over 79%.

I didn't expected this issue with my RN8P, but with other phones (cheap noname ones).
A discharge to around 5%, and a full charge without unplugging did the trick for me.

AnonyIsRight said:
Hi, I'm currently experiencing some problems with my Redmi Note 8 Pro.
I've had my month for less than a month, and it's starting to get issues with the battery.
The battery, whether I charge it with the original wall charger, or I use a computer to charge it, or o use an alternative wall charger (that is for slow charge), it can't get to 100%.
It gets stuck at 99% and says, full charge in 2 minutes, even though the 2 minutes have passed long time ago.
I haven't done a full battery drain, and I always try to use a slow charge charger.
I also haven't done a full cycle without using the phone, maybe that's the problem.
But I'm worried, and I need some help, because I got the phone (as I said) less than a month ago, I haven't even payed the first installment.
I'm still within the seller's warranty, but I need some advices to what can I do, because returning the phone to the seller, to make a change, is gonna cost me 15 to 20 days. And I don't have any other phone to use.
Please, if someone can give me some advice, or tell me what to do, it's completely welcome.
Thanks.
And by the way, I'm using the Global 128Gb version, if that helps.
Click to expand...
Click to collapse
When I cannot tell if its some HW related problem with your phone or battery but I am really wondering why you want to do full charges (and/or discharges)? It is known to wear battery way faster. Li-on or Li-po batteries do not have memory effects and it is known to be best to always keep them charge for example between 15-20% and 80-85% trying to never get bellow or above.
This phone has a pretty big battery, that normally should be enough to bring you through a day of normal use (if it does not you may want to check your hungry apps running in the bg) but maybe you are an heavy gamer or use your phone for some heavy usage stuff?
Even then, it would be best to do 2 quick 15 to 50-60% in about 30 mins with QC2 (18W original Wall charger) rather than one unique full charge.
Looking at what you said with slow charging you probably know all of that already, but the faster you charge the battery, even if same %, the faster it will discharge. As odd as it is, remains factual.
I dont know if you ever used an external amperemeter or similar to check what kind of current was actually going through your battery while charging, but if you do you will notice the first % goes way faster to charge than the last few %. The chip dealing with the battery charge, charges slower and slower toward the end because it could damage the battery, when on the opposite it is rather safe to quick charge the % in the middle.
Also you may want to check your alternative 'slow wall charger' to make sure it provides you with a steady voltage current (V). If it is fluctuating too much, it may damage your battery.
If you want to do further research about the subject, there is a note on the RN8PRO Telegram group explaining how to calibrate your battery by deleting some system files (root needed as far as I remember) and having some charges/discharges steps. Personally I have not done it because it requires to go to 100% and 0% a few times, and depleting a Li-ion/Li-po battery completely can damage it irreversibly. They are not meant to be discharged fully period. Now battery should not be completely drained when OS takes the phone off, that said we never know for sure since we cannot change that setting unlike on our windows laptops, but I dont want to take the risk.
When you are stuck to 99% it kind of looks to be the OS not being able to know if the battery is fully charged or not. In that state of things, have you tried to turn off the device without unplugging to see if the off-mode charging screen (the small battery screen with % when you turn your phone off) also remains at 99% or gets to 100% at some point? Because maybe all you need is to restart the phone to make OS aware the battery is fully charged. Could be a SW known/unknown issue/bug to be fixed with future updates for all I know.
But again, I don't think you should fully charge and/or discharge (if you do) your phone when you can avoid it.
Just my 2 cents.
Hope this helps,
Regards,

-=Fxs=- said:
I didn't expected this issue with my RN8P, but with other phones (cheap noname ones).
A discharge to around 5%, and a full charge without unplugging did the trick for me.
Click to expand...
Click to collapse
I tried it, and... it got worse.
Now it can't go over 79%. :c
Thanks for trying to help anyways.

Muad.Dib said:
When I cannot tell if its some HW related problem with your phone or battery but I am really wondering why you want to do full charges (and/or discharges)? It is known to wear battery way faster. Li-on or Li-po batteries do not have memory effects and it is known to be best to always keep them charge for example between 15-20% and 80-85% trying to never get bellow or above.
This phone has a pretty big battery, that normally should be enough to bring you through a day of normal use (if it does not you may want to check your hungry apps running in the bg) but maybe you are an heavy gamer or use your phone for some heavy usage stuff?
Even then, it would be best to do 2 quick 15 to 50-60% in about 30 mins with QC2 (18W original Wall charger) rather than one unique full charge.
Looking at what you said with slow charging you probably know all of that already, but the faster you charge the battery, even if same %, the faster it will discharge. As odd as it is, remains factual.
I dont know if you ever used an external amperemeter or similar to check what kind of current was actually going through your battery while charging, but if you do you will notice the first % goes way faster to charge than the last few %. The chip dealing with the battery charge, charges slower and slower toward the end because it could damage the battery, when on the opposite it is rather safe to quick charge the % in the middle.
Also you may want to check your alternative 'slow wall charger' to make sure it provides you with a steady voltage current (V). If it is fluctuating too much, it may damage your battery.
If you want to do further research about the subject, there is a note on the RN8PRO Telegram group explaining how to calibrate your battery by deleting some system files (root needed as far as I remember) and having some charges/discharges steps. Personally I have not done it because it requires to go to 100% and 0% a few times, and depleting a Li-ion/Li-po battery completely can damage it irreversibly. They are not meant to be discharged fully period. Now battery should not be completely drained when OS takes the phone off, that said we never know for sure since we cannot change that setting unlike on our windows laptops, but I dont want to take the risk.
When you are stuck to 99% it kind of looks to be the OS not being able to know if the battery is fully charged or not. In that state of things, have you tried to turn off the device without unplugging to see if the off-mode charging screen (the small battery screen with % when you turn your phone off) also remains at 99% or gets to 100% at some point? Because maybe all you need is to restart the phone to make OS aware the battery is fully charged. Could be a SW known/unknown issue/bug to be fixed with future updates for all I know.
But again, I don't think you should fully charge and/or discharge (if you do) your phone when you can avoid it.
Just my 2 cents.
Hope this helps,
Regards,
Click to expand...
Click to collapse
Hi Muad.Dib,
Well, I wanted to do that full charge a/o discharge because I thought it would help with the issue (turns out, it didn't, it got worse as you said) but I didn't know the effects of this before, I always thought it wouldn't have any effect. I wish I could have read your reply before doing it (I was busy and couldn't read it).
The battery lasts for more than a day (or it did before), and I always try to keep it clean from battery draining apps, and I don't play games that much on the phone, less than an hour per day.
Do you recommend me to do those 2 charges to 60% in my state? (phone can't get over 79% now).
I haven't ever used an amperemeter because I don't have one, and neither I do know how to use one of those.
If you can lend me a hand and give me the link to join the Telegram Group, it would very helpful ??. But I don't want to root the phone yet, cause the seller's warranty stills intact.
And yes, I have tried it and the off-mode charging screen keeps showing me 99% (or kept, because now it keeps at 79%). And I also tried few restarts and it didn't fixed it. :c
And I'm sorry, I wish I could've avoided it, but I read your reply too late.
Thanks for trying to help me anyways.
PS. I will try to do a factory reset to see if the MIUI update has something to do with the issue (because the seller told me to do it, and I will do it, though I don't think it could solve the issue). Please, if you have any advice before I do it, you could help me a lot. ( I'll do it something around 11:00 AM in GMT -03:00)

AnonyIsRight said:
Hi Muad.Dib,
Well, I wanted to do that full charge a/o discharge because I thought it would help with the issue (turns out, it didn't, it got worse as you said) but I didn't know the effects of this before, I always thought it wouldn't have any effect. I wish I could have read your reply before doing it (I was busy and couldn't read it).
The battery lasts for more than a day (or it did before), and I always try to keep it clean from battery draining apps, and I don't play games that much on the phone, less than an hour per day.
Do you recommend me to do those 2 charges to 60% in my state? (phone can't get over 79% now).
Click to expand...
Click to collapse
Hey.
Very strange what is happening to you it's probably the first time I read about something like this.
Please note I am no battery expert either.
From own experience and friends, usually when you wear a battery (or it worn by itself after use or bad storage condition before being sold) it still goes up to 100% but does not retain original design capacity anymore. The usual behavior is like for example you still have like 30% left, and suddenly it drops to like 5% and you only have a few seconds to plug it in the charger.
When that's happens it is time to change battery.
In your case I really have no idea what could prevent HW/SW to reach 100%.
AnonyIsRight said:
I haven't ever used an amperemeter because I don't have one, and neither I do know how to use one of those.
Click to expand...
Click to collapse
Oh those are easy to use as I meant some kind of small USB device that you plug in between your charger and your phone. They are cheap and you get them for like 10 bucks on Amazon. Readings might not be 100% accurate but they still give a decent idea as they display Voltage, Amperage and accumulated capacity/used current for device plugged.
AnonyIsRight said:
If you can lend me a hand and give me the link to join the Telegram Group, it would very helpful . But I don't want to root the phone yet, cause the seller's warranty stills intact.
Click to expand...
Click to collapse
As I said I am nothing like an expert or anything so I am unsure what I can do to help. However I did check the telegram group and I confirm you the battery calibration thing is a rooted thing.
To find that group it is pretty easy just search for Redmi Note 8 Pro OFFICIAL from telegram and join the group.
You find quite a few things there.
AnonyIsRight said:
And yes, I have tried it and the off-mode charging screen keeps showing me 99% (or kept, because now it keeps at 79%). And I also tried few restarts and it didn't fixed it. :c
Click to expand...
Click to collapse
Normally nothing you could have done, could have damaged the battery this way. Depleting it completely could have shorten its life or damage its overall capacity, but by all means there is no way in just a month you could have damaged the battery to this point. So either the OS is not reading things right (what version of OS and phone do you have - which region is your rom?) or either sensors or battery have a problem.
Since you still are under warranty period I would definitely get it replaced. Maybe you got a faulty batch or something. This happens.
AnonyIsRight said:
PS. I will try to do a factory reset to see if the MIUI update has something to do with the issue (because the seller told me to do it, and I will do it, though I don't think it could solve the issue). Please, if you have any advice before I do it, you could help me a lot. ( I'll do it something around 11:00 AM in GMT -03:00)
Click to expand...
Click to collapse
This definitely cannot hurt to try.
If that does not work return the phone.
Just to know, based on your flag I would assume you are in Chile but I may be wrong. If I am not mistaking it is summer there and probably is pretty hot. I wonder if 'too hot' could damage the battery.
Hope this helps.
Regards,