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Hello,
I bought a gently used N900T a few days ago. The device is awesome and works perfectly, except for one thing. Charging the phone with the Samsung charging cable+ac adapter takes longer than forever. It charges at a rate of approximately 8-9% per hour.
A few notes:
Device on, device off, it doesn't matter. It charges at the same slow rate.
The battery itself, once it charges, holds that charge very well.
The slow charging happened both when I was on the stock rom and on my current Slim Rom.
I have ordered a new charger and a new battery. If the slow charging persists with these new accessories, am I doomed? Is the slow charging a known issue for the Note 3? Besides the new equipment, does anyone have any advice on how to solve this?
Thanks so much!
JJ2525 said:
Hello,
I bought a gently used N900T a few days ago. The device is awesome and works perfectly, except for one thing. Charging the phone with the Samsung charging cable+ac adapter takes longer than forever. It charges at a rate of approximately 8-9% per hour.
A few notes:
Device on, device off, it doesn't matter. It charges at the same slow rate.
The battery itself, once it charges, holds that charge very well.
The slow charging happened both when I was on the stock rom and on my current Slim Rom.
I have ordered a new charger and a new battery. If the slow charging persists with these new accessories, am I doomed? Is the slow charging a known issue for the Note 3? Besides the new equipment, does anyone have any advice on how to solve this?
Thanks so much!
Click to expand...
Click to collapse
Rooted? What kernel? Is fast charge supported?
TWEAKED N3
BACARDILIMON said:
Rooted? What kernel? Is fast charge supported?
Click to expand...
Click to collapse
Rooted running Slim Rom v8 and LeanKernel 1.2. I'm unsure if a fast charge feature is supported.
Dude this phone charges pretty fast without any roms or mods. ..it charges fast out of the box. .. Are you using the charger that comes with...correct me if I'm wrong but I think the charger that Came with this is usb 3.0....not your regular usb charger. ..
Sent from my SM-N900T using xda app-developers app
mlock420 said:
Dude this phone charges pretty fast without any roms or mods. ..it charges fast out of the box. .. Are you using the charger that comes with...correct me if I'm wrong but I think the charger that Came with this is usb 3.0....not your regular usb charger. ..
Sent from my SM-N900T using xda app-developers app
Click to expand...
Click to collapse
I am using a genuine Samsung Note 3 charger. The replacement coming is another genuine Samsung Note 3 charger. I'm sincerely hoping the one I have now has a cable problem or something. I really, really like the phone but I'm wondering if anyone else has seen a similar story or knows of a possible solution in the case that the new charger+battery do not work.
JJ2525 said:
I am using a genuine Samsung Note 3 charger. The replacement coming is another genuine Samsung Note 3 charger. I'm sincerely hoping the one I have now has a cable problem or something. I really, really like the phone but I'm wondering if anyone else has seen a similar story or knows of a possible solution in the case that the new charger+battery do not work.
Click to expand...
Click to collapse
Swap to any other kernel and test it out.
TWEAKED N3
BACARDILIMON said:
Swap to any other kernel and test it out.
Click to expand...
Click to collapse
As I noted, the slow charging happened on both stock rom+kernel as well as custom roms.
JJ2525 said:
As I noted, the slow charging happened on both stock rom+kernel as well as custom roms.
Click to expand...
Click to collapse
So this has been doing it from day one. On your white wall charger how many amps does it say.
TWEAKED N3
It is a genuine Note 3 2 amp charger.
Lol damn 8% an hour? Sounds like mine kinda except it charges like 20% an hour it used to charge so slow. The ROM I'm running took some stabilising
chuko303 said:
Lol damn 8% an hour? Sounds like mine kinda except it charges like 20% an hour it used to charge so slow. The ROM I'm running took some stabilising
Click to expand...
Click to collapse
Well I have to be honest from dead it takes about 2.5hrs to get back to 100. On stock.using the wall charger with 2amps. When he gets his new charger he should be good or a good kernel swap. Either way it should come back to normal
TWEAKED N3
I got a new charger and it's still charging at the same slow pace. What could possibly be wrong with my phone? The battery holds a charge, the phone works near flawlessly. I'm dumbfounded.
JJ2525 said:
I got a new charger and it's still charging at the same slow pace. What could possibly be wrong with my phone? The battery holds a charge, the phone works near flawlessly. I'm dumbfounded.
Click to expand...
Click to collapse
You gonna have to do testing or replace phone. Me I would change kernel just cause it takes 2 seconds. Let it ride a day if no change then a factory refresh. You have checked that no app is killing phone as fast as it charges right?
TWEAKED N3
Edit. I was just on his thread and a few guys having issues with either bad batter. UV/ oc .try a different ROM and kernel. Fresh install meaning Odin back to stock and start all over. Sorry good luck
As weird as this sounds, I tried the charger in a different outlet in my home and it works a lot better. The battery charges quite fast from any level to about 96%, then starts crawling again to 97, 98 and stops at 98. I opened battery calibration, which shows the battery at 96% and 4337mv, which is the same mv level as 100% normally if memory serves me correctly. So I'm thinking the battery is "full", but for some reason won't go to 100% without a fight. Perhaps if I clear my cache+dalvik cache? Any other suggestions?
JJ2525 said:
As weird as this sounds, I tried the charger in a different outlet in my home and it works a lot better. The battery charges quite fast from any level to about 96%, then starts crawling again to 97, 98 and stops at 98. I opened battery calibration, which shows the battery at 96% and 4337mv, which is the same mv level as 100% normally if memory serves me correctly. So I'm thinking the battery is "full", but for some reason won't go to 100% without a fight. Perhaps if I clear my cache+dalvik cache? Any other suggestions?
Click to expand...
Click to collapse
ROM toolbox Pro has a script to reset battery stats.
Sent from my rooted Note 3 (N900T) using XDA Premium
Can someone give me link to odin back to stock please
Sent from my SM-N900T using XDA Premium HD app
What was wrong with mine it was the charger. The usb wasn't connected all the way in the AC therefore was only charging like it would through computer as soon as I fixed it with a blow of air and a gentle push it right away started charging AC phone charged in 2 hours
I could be wrong but I noticed my charging is slower when I stick my charger into a surge protector power bar as opposed to a standard wall outlet.
Mine was the charging cable I used a regular USB charger cable and it charge fast
Sent from my SM-N900T using xda app-developers app
What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.
definitely a downgrade from the M8 battery life. However once we are able install custom rom's and kernels ect. I expect it will improve.
xgerryx said:
What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.
Click to expand...
Click to collapse
Interesting. Compared to my de-bloated, undervolted, S-Off and custom ROM'ed (Adrenaline) M8, I am seeing similar battery life comparatively on my M9. I did disable a lot (if not all) of the Bloat on the M9, so not sure if that helps the cause.
Horrible. I have to charge my phone about after 5-6 hours of use. I work in IT so I know Exchange is hammering the battery, but on my M8, I could last 8-9 hours before charge. This is includes browsing /r/sysadmin and other reddits.
For some reason too, it seems the QuickCharge 2.0 is slower on the M9. On my M8, it was stupid quick.
My experience has been mostly positive with the M9. First, I disabled all the VZW bloatware and then let the battery run very low and fully charged it. I repeated this 3 more times over the weekend. I took my battery off the charger at 6:00 AM and with medium use, I still have 84% left. The M8 was slightly better when running GPE so it's not apples to apples, yet.
xgerryx said:
What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.
Click to expand...
Click to collapse
My usage and battery life is comparable to yours. After 9 hours of only texts and phone calls I'm down to 50%.
I honestly think its too early to tell. I've disabled most, if not all, of the bloatware and I'm seeing "decent" but not "great" battery life. The phone still has the "new phone vibe" though, so I'm likely picking it up more frequently than I normally would. I'm also coming from the m7 though, not the m8, so my expectations are probably different. Custom ROMs and kernels are definitely going to change this though.
Cores can be completely disabled in custom kernels, which will likely provide a big boost with little performance loss (how often do you really think all four of those high-performance cores are being utilized?). Likewise, tweaking max clock speeds, undervolting, and tweaking/changing the governor will likely help things a lot too. We're just too used to our old ROM'd phones. It definitely seems like we'll be able to squeeze much more battery life out of the m9.
After reading some of the replies I think I'll go through and disable everything I can since I only did that to a moderate degree before. I am hoping that once we get some optimized kernels and different features it will help. Also, full root access to Greenify could help, but so far it's a horror show.
Coming from a galaxy s3 and sad to say iPhone 5 the battery has been superior to those two.
Sent from my HTC6535LVW using XDA Free mobile app
Chewcracka said:
Coming from a galaxy s3 and sad to say iPhone 5 the battery has been superior to those two.
Click to expand...
Click to collapse
My GSIII quadrupled what I'm getting on this M9. My galaxy s5 doubled it, easily. I'm just hoping it gets better.
Weird, I've been on it moderately all day and on 10% as of right now. Maybe I'm just used to horrible battery of the iphone
Sent from my HTC6535LVW using XDA Free mobile app
Feels about the same as my m8 maybe even a tad less honestly. Might just be from overuse running stock rom though.
Something with these new phones is killing the battery. I got the S6 and the battery is horrible as well, I can't even go a full day without recharging.
Every OS release Google talks about all these features that are supposed to improve battery life, but it only seems to make them worse.
Stock non rooted, disabled as much bloatware as I could. Haven't Set up any of my Tasker profiles (lack of root makes them useless for now) and I got a full 1day 5hrs before dropping below 15 percent. Battery life seems pretty much par for the course on a flagship phone. I also had an s6 edge for a couple of days but picking it up off the counter was a weird experience for me so I switched back to HTC. Aside from the heating problem which I believe will be resolved either by the community or HTC I love the phone.
geoff5093 said:
Every OS release Google talks about all these features that are supposed to improve battery life, but it only seems to make them worse.
Click to expand...
Click to collapse
The fact of the matter is yes, Google is making improvements in regards to battery life... but these improvements are offset and negated by consumer demand for faster, more powerful phones. The Snapdragon 810 is a beast of a mobile processor; its got two quad-core CPUs in it, so it definitely has to use some power to operate.
I can't wait to get a custom ROM my M9 and (hopefully) disable two of the A57 cores and see what happens (and see how performance is affected, if any).
I must say that I like it so much better than the SGS3! I can go a day and a half with out charging it... S3 was every day!
Even using GPS is less consuming... . Well worth the wait for HTC to get it right!
Other reasons that I like it better than the S3:
1. You can actually keep a grip on the M9!
2. The M9 is not as fragile!
3. Love the feel!
4. The audio is excellent (in my opinion better than any other available)!
5. The 3.5mm plug has a firm fit!
6. The charge port and audio port are both on the bottom!
I will stop there - I love this phone! (M9)
I'm literally sitting here with my phone plugged in, only with WiFi on and chrome browser, bloat disabled, screen on low, force closed most processes (ie play store, etc) and watching my battery % get lower... Plugged in!
WillyRy said:
I'm literally sitting here with my phone plugged in, only with WiFi on and chrome browser, bloat disabled, screen on low, force closed most processes (ie play store, etc) and watching my battery % get lower... Plugged in!
Click to expand...
Click to collapse
Plugged into what, though? The 500mA maximum of the USB2 ports on your desktop/laptop is not enough to charge this phone with the screen on. You can slow-charge it at 500mA with the screen off, but it still takes some time. USB3 ports technically have a max draw of 900mA, which should be enough to slowly charge with the screen on, but in practice some laptops/motherboards won't allow any more than 500mA on their USB3 ports either. Use a wall charger for best results -- check the output rating though.
The included wall charger with the m9 is rated for [email protected] (1500mA). I'm not a fan of charging my devices extremely quickly, so I'll probably stick with the 1A (1000mA) charger that came with my m7.
Rain724 said:
Plugged into what, though? The 500mA maximum of the USB2 ports on your desktop/laptop is not enough to charge this phone with the screen on. You can slow-charge it at 500mA with the screen off, but it still takes some time. USB3 ports technically have a max draw of 900mA, which should be enough to slowly charge with the screen on, but in practice some laptops/motherboards won't allow any more than 500mA on their USB3 ports either. Use a wall charger for best results -- check the output rating though.
The included wall charger with the m9 is rated for [email protected] (1500mA). I'm not a fan of charging my devices extremely quickly, so I'll probably stick with the 1A (1000mA) charger that came with my m7.
Click to expand...
Click to collapse
Using included wall charger and cable.
Plugged it in this afternoon, turned off screen and walked away... in 2 hours it gained 2% from 47 to 49
Edit:
Very well could be faulty device. Using different cables/outlets in different rooms yields same results. M7 on same setup charges steadily during heavy use. Using m7 outlet now. Dropped from 17% to 14% while editing this post. Better screen off now so it doesn't die on me...
I usually wake up by watching a few youtube videos. This morning I woke up, grabbed my phone off the charger and watched a 16 minute video at 1080p with adaptive brightness (which was low). In the 16 minutes my battery went from 100% to 83%. That is atrocious. Hopefully new ROM's and kernels will be able to remedy this.
Also, the other day I was using a quick charger I got at Verizon with my phone and got the message I was using the phone too much to charge. I could understand if it was plugged into a USB port on my computer. How did I get this message while using a quick charger?
Hey guys,
I have recently purchased xiaomi mi 6 and this is my first quick charge phone so something got me worried. My battery charging speed seems to be too fast for me. Although I don't think temperatures are worrying however I'm conserned regarding long term effects.
I have xiaomi mi 6 6gb ram 128gb storage ceramic edition model.
These are pictures taken from battery app from playstore and image of my charger.
If anyone have some advise about this it would be great.
My greatest consern is that charging speed doesn't seem to diminish as charge is getting to 90% after it hits 90% it slows down dramatically. But from what I know it should change charging speed between 60 and 70 percent to little slower then from 0 to 60.
Is this damaging battery?
Screenshots below.
Thank you.
Totally fine. Its QC 3.0. Imagine this: QC4+ charges ~50-60% in under 15 minutes.
Oh such a releaf. Thank for replying.
Anyone got idea if this has any at all negative effect to battery?
No, higher battery voltage - slower charge, you would damage your battery in few weeks without this slow down.
Also avoid heavy load of phone when charging
ninokotur said:
Oh such a releaf. Thank for replying.
Anyone got idea if this has any at all negative effect to battery?
Click to expand...
Click to collapse
Would they put a fast charger in the box if the phone couldn't handle it? Nah probably not. Maybe Apple would......
Should you worry if you use the stock charger or a certified QC 3.0 charger? Definitely not its fine.
Are you still worried?: use a non QC 3.0 charger like 1.5 amp.
I use my old Sony one and it works equally well.
I find a slower charger gives slightly longer SOT.
The fast charger is just useful if I need power quickly.
Thanks guys
we all know that one of the benefits of A70 is it's so called "Super Fast Charging"
well...as super fast as the claim, its super fast in dissapointing as well
TTHE PHONE IS CAPPED AT 15 WATTS ONLY !!!!!
as soon as u charge the phone it jups to 32 watts, so, its not the outlet that have the issue which is decent, then u wait a couple of seconds annnnnnnd....its stuck at below 1000ma with 14.4 watts of power
i dont get it, why the heck it doesnt stick to the 25 watts promise ? am i doing something wrong ?
i am using franko kernel app to measure the watts
From what I gather it will only 'fast charge' when the phone is in standby. I.e. The screen is off and phone not being used ....
But I agree it is a poor fast charge.
My honor note 10 which is a 22w super charge on a 5000mah battery charges way faster even with the screen on and phone being used.
Maybe it's Samsung just being cautious with there batteries.... [emoji848]
Rixil 1 said:
we all know that one of the benefits of A70 is it's so called "Super Fast Charging"
well...as super fast as the claim, its super fast in dissapointing as well
TTHE PHONE IS CAPPED AT 15 WATTS ONLY !!!!!
as soon as u charge the phone it jups to 32 watts, so, its not the outlet that have the issue which is decent, then u wait a couple of seconds annnnnnnd....its stuck at below 1000ma with 14.4 watts of power
i dont get it, why the heck it doesnt stick to the 25 watts promise ? am i doing something wrong ?
i am using franko kernel app to measure the watts
Click to expand...
Click to collapse
With screen off, 0-100 in 1 hr 40 minutes. If the screen is on it'll charge normally. This is to prevent overheating and damage to the battery
devilhunter47 said:
With screen off, 0-100 in 1 hr 40 minutes. If the screen is on it'll charge normally. This is to prevent overheating and damage to the battery
Click to expand...
Click to collapse
well my friend, i doubt it, cause i have rooted my A70 and used ACC (advanced charging control) to completely disable the cooldown thingy to fast charge, well, nothing helped, stuck at 14.4 watts for eternity
i mean...assuming your theory IS true, i tried leaving my phone screen off for 15 minutes, then opened it and checked the wattage from the notification...aaaaaand its still 14.4 watts, i mean, if what you say is true i should probably find it at like 25watts and it drops down 2 sec after i open the screen, but it NEVER reaches this 25 watts thingy, and the ampere app is stuck at 1200 max mAh
I think trying to work this out while running a custom kernel is a fool's errand. We have no idea how charging work with custom kernels yet, so you dont know if it's a kernel problem or a hardware problem. Since you dont seem to have tested this prior to switching the kernel, you have no baseline to compare it to other than what other people who are running official firmware are telling you..So not much help then.
I'll say this though, I checked mine with a power meter and not a software readout: 25w screen off, 10ish screen on. That's below 80% charge, anyway, at which point the consumption drops.
I think my A70 charges pretty fast and I'm okay with how fast it is, no matter the watts.
James.Miller said:
I think trying to work this out while running a custom kernel is a fool's errand. We have no idea how charging work with custom kernels yet, so you dont know if it's a kernel problem or a hardware problem. Since you dont seem to have tested this prior to switching the kernel, you have no baseline to compare it to other than what other people who are running official firmware are telling you..So not much help then.
I'll say this though, I checked mine with a power meter and not a software readout: 25w screen off, 10ish screen on. That's below 80% charge, anyway, at which point the consumption drops.
Click to expand...
Click to collapse
i am already running the stock kernel, its just i patched it using magisk and that's it, so i believe there is no issue from my side as i am using the stock kernel
Mine is charging pretty fast, no issues on my part.
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)
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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.
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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.
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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.
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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.
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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...
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@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.
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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.
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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
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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?
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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.
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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?
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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).