Develop Bugs

Uni Battery vs Wall charger?

Hi guys, I i'm Uni user who own two batteries, both standard 1620 Dynapack batteries. One of them came with the device as I bought it used. One of them I bought I on ebay, both of show different kind of problems, first on dies when 38% battery left and second one shows bizarre power meter and dies with unknown indication of power left.
For both of these batteries, I charge them with a wall charger which originally for my HTC Hermes aka Cigular 8525. The output I read was 5V and I just found on the Uni batteries it says charging voltage limited under 4.2V
So I'm wondering could the wall charger being the reason for damaging my batteries as it charged them over a higher voltage so they act funny? If so where could I buy a Wall charger for HTC Uni?
Thanks guys~

Hi,
The first battery shows the normal signs of an old Uni battery. The same happend to most people here.
The seocnd battery is a cheap copy, which does not implement the same functionality as the original one.
The charger will show a slightly higher voltage, when measured directly with a multimeter, because it is not providing any current. Normally the voltage will drop as soon as an appliance is connected to it.
So far, everything seems normal.
To get an idea: I bought two Universal standard batteries at eBay, with one month delay (I have two Universals). The first one is much better than the second one, because it will retain power on standby much longer and seems to have a bigger capacity.
Still, the second one features a more impressive label...
I bought them from different sellers: I had to buy a battery for a friend and thought I better use the free shipping. Now I know I should have bought the second battery from the first seller - never change a winning horse!
Cheers,
vma

Also as Universal is an old device I´m not sure that bateries still being made to this date, so perhaps a "new" battery is not really new, as perhaps it is on storage from seller since long time. Just consider that
Dukenukem sold me the original Universal battery and he´s reliable seller

Anker 1800mah on Amazon

http://www.amazon.com/Anker-Batteri..._26?s=wireless&ie=UTF8&qid=1316372694&sr=1-26
Read an article in the HTC Sensation forums where many of the posters picked up an Anker battery as a "Why the hell not for $15?" deal and had generally positive results. Did a search and not only does Amazon sell multiple varieties of Anker batteries, but many of them have a ton of positive reviews.
Before all the battery naysayers jump in and shout "You can't get an extra 300mah in a stock battery! It's another chinese scam and it's probably only 1.03mah!" the Sensation people explained it as being noticeably thicker than the stock battery while still fitting snugly inside the battery door. A good 1mm thicker at least.
Anyway, bought myself a pair along with a car charger for $30 for two batteries, a car charger, and a USB charger. Will let you all know if its a huge letdown, or if the positive reviews aren't just Chinese robots blowing smoke up our you-know-what.

Hey can you do a favor? Install battery calibration app from market and tell us how many mV (Milli volts) it say when the phone is truly 100% charged.

interested in seeing how those batteries are
was about to buy one
keep us posted

I've read in some of the comments on Amazon that they work best when the wall charger is used, though that may be because the wall charger keeps it at 100% while charging inside the phone causes the battery to drain down to 90% if left on the charger after it reaches 100%. Of course, the battery monitor won't tell you that to keep Samsung's support lines from clogging.
Thankfully this is Amazon and not the overseas shipping I had to deal with with my last battery, so it should arrive (according to Amazon) somewhere between the 23rd and 28th. Will test it heavily with my current ROM and let you all know how it fairs.

rakeshchn said:
Hey can you do a favor? Install battery calibration app from market and tell us how many mV (Milli volts) it say when the phone is truly 100% charged.
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Click to collapse
mV will not tell you anything about the capacity of a battery, only how close to fully charged it is.
Sent from my SGH-T959 using XDA App

shrapnelx said:
mV will not tell you anything about the capacity of a battery, only how close to fully charged it is.
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Click to collapse
True. If it's anything like the stock or mugen battery that I have, it'll cap out around 4250 for Froyo, 4200 for MIUI/Gingerbread.

Momax 1700mah is fine and chip.

Well, while discharging the first battery through normal use, I was actually getting a little frustrated that it was taking so long. Got about 24hrs out of it from wall charge to phone shut off, including about 8 - 9hrs of overnight standby.
Got the second battery off the charger and into the phone, and after about an hour it's still showing at 100% and 4100 - 4180ish millivolts.
Anyone, nothing is decided just yet. Will have to see how they hold up after the first 5 full charge and discharges that "sets" the batteries internal memory. Or whatever.
I thought these AOSP ROMS were supposed to drain battery, dammit!

Just about done "Breaking In" the new batteries. Two things: On the surface, they seem to last quite a while given the last time I tested the Mugen battery I was on Froyo and I'm now on MIUI.
From what I've heard, Gingerbread on the Vibrant, whether it's an i9000 leak like Malice or built from the ground up like Cyanogen 7 or MIUI, tends to burn battery faster than on Froyo. I'm also using different voltage settings, a different kernel... you all get the idea.
Apart from flashing back to Froyo, or completely redoing tests on my stock and Mugen batteries on top of the new Anker battery, whatever results I get will be a bit skewed.
Also, MIUI seems to allow the battery to get further down in power before shutting it off. Froyo would often cut me off around 3700, but I usually see MIUI showing battery power as low as 3300 before shutting down.

Your link points to the 2x package...if you look up the batt itself and read the reviews, most will tell you it's basically a cheaper oem replacement
http://www.amazon.com/Anker-1800mAh..._1_5?s=wireless&ie=UTF8&qid=1317360583&sr=1-5
Still a great deal at 11 bucks shipped.... by itself...and assuming it lasts...my original batt that came with my phone died couple of weeks ago... (less than 2hrs on a froyo rom...) had another oem that I'm using now..so far so good, but who knows...this seems like a great buy, but doesn't sounds like it's any kind of gain even with the 1800mAh rating...

Samsung Galaxy SII Touch batteries work in our phones. Tested.
They are 1800mah and can be found for $23 shipped. They are GENUINE Samsung as well so...it WILL be the advertised 1800mah. Just saying.

Even cheaper on ebay : http://www.ebay.com/itm/330601629006?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
Sofiz has the Pisen battery for SGS II 1659 mAh, will this work on the Vibrant?

just ordered one too, hopefully it works out

Some reviewers saying battery only charges with wall charger and phone shows unsupported battery message. Those who have the battery please confirm.

adityamunshi said:
Some reviewers saying battery only charges with wall charger and phone shows unsupported battery message. Those who have the battery please confirm.
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I think I went over that at least 3 times already. Battery is a perfect fit. Charging is perfect (USB computer and Wall plug in). EVERYTHING WORKS with it. I wish people would read the topic more. It's only 2 pages. . .

Only reason it wouldn't charge in your phone is if you owned a Fascinate, in which case, get out of our forums, punk!

Ordered one from ebay and pretty happy with it so far. Only had it a couple days so far though and still messing around with different roms and kernels so hard to say exactly how long of a charge i get with it.

Got mine today, charging now. Thanks!

Just recieved mine from amazon, and so far its been great !

I bought the two off of ebay that come with the wall charger. I'm getting much improved battery life right now. I'm very happy with them. Even though they do make the phone slightly heavier, it's worth it IMHO.

Phone abruptly dies under 20% battery

Phone totally goes black/dies when battery is 21% down to 10%. does this just mean the battery I have is bad? What replacement battery is best? I've read Anker makes a good set with charger. Thanks.

Samsung SDI batteries are the only batteries I've known to do this. When screen goes black, that should be a shutdown. Do you plug in your charger at that time? Mine actually actually showed 0%.
It's inconvenient for a battery to shutdown unexpectedly, while showing capacity remaining. I always replace Samsung OEM batteries with another brand. I found one that I liked so l went to Amazon and bought a second plus external charger from same brand. If looking at another alternative, just search MPJ and read the reviews. The battery and wall charger were on sale last week, maybe still.
If you're considering upgrading to sealed battery in unibody phone, you should consider the care required for such a phone to get battery to last. Sealed batteries are actually very similar in capability and ratings; no leap in tech but apparent shortcoming evident in Note7 embarrassment. Fast charging produces heat and steals life from battery's endurance down the road. Studies have shown since lithium batteries have no memory that you're actually prolonging the battery by slow charging without load or minimum load and bump charging rather than cycling battery to near 0% then back to 100%. Manufacturers don't tell you that because they prefer you wear your battery down in less than a year's time and consider another phone purchase.
Maybe Samsung would be better off today if consumers were more aware of how to prolong lithium batteries?
If you want your battery to last two years, bump charge it after 25% used as much as possible; it shouldn't even matter if you bump charge it 3x per day. Avoid fast charging and heat cycles. IOW, try not to use it while charging; the cycles should be short anyway.
Or, if you prefer to abuse a removable battery like the Note 4 and care less, pay about $15 and just replace the battery every year. 500 full cycles is all these batteries are currently rated for due to increased degradation with abuse. Mini cycles allows more of those cycles without degradation but you'll still have capacity when you need it to last a long day without charging.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my SM-N910P using Tapatalk

Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.

Toyeboy said:
Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.
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Click to collapse
Try this, if you are rooted and have recovery wipe dalvik cache and cache. Power off phone and pull battery for like 5-10min. Hold the power button (with battery out) for like 1-2min. After letting battery sit out for 5-10min reboot and see what happens. If same instances occur. Your battery is dead just purchase a new one! Anker recommended!

Toyeboy said:
Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.
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You're welcome.
Bump charging is partially charging before battery gets low. An example would be running the battery down 25% and charging without overcharging it.
Sent from my SM-N910P using Tapatalk

Had the same issue, bought a new Anker and issues resolved, the stock Samsung sucks!

I'm just glad there's a way to replace it that'll mean this phone can last a long time if I'm careful with it.

Yeah it must be these batteries. My mom has the Note 4 as well and hers does the same thing. As does mine

g355150 said:
Yeah it must be these batteries. My mom has the Note 4 as well and hers does the same thing. As does mine
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Yes the stock Samsung batteries are horrible. They don't last very long then they start misrepresenting the battery statistics to the OS so you get the shutdowns at 20 or so %. I switched to a twenty$ Anker I found on Amazon over 6 months ago and never had the issue occur again. Even thy sprint techs will tell you if you ask them outright!
sent from my droid

Recommendations on replacement/spare batteries and chargers in 2018

Just got a pair of V20s for the wife and I.
Haven't used them enough to know how well the battery lasts, but the "refurbs" we got clearly came with the original LG batteries.
I don't know if these are the "original" batteries and/or if LG is still making fresh batteries for these phones or all OEM have been sitting on the shelves for a couple of years.
I'd like to get a couple of backup batteries for us along with a wall charger to keep the spares juiced.
I've never had great luck buying replacement batteries for phones before on Amazon, I usually got OEM which were old stock or 3rd party which might work well for a month or two but then degrade quickly.
Can anyone recommend some good quality spares? I see the BCK-5200 is still for sale on Amazon, but $99 is way to steep. That's 60% what I paid for the phone

I got a used LG V20 on swappa some time ago. I bought 2 3300ma Aexpower batteries with an external charger for around $25 or so on Amazon. No complaints they have been good for the last number of months.

I got a Alimu USB Type C charger on Amazon sold by JOTech and it is awesome. It's a quick charge 3.0 rapid fast wall charger. Gives you a super fast charge. Has the little circle thing pop up on the battery icon on the phone to let you know its rapid charging as well. I use this one over the original charger it came with. You will not be disappointed. Would post a link but am still a newbie here.
As for spare batteries.... I got lucky on EBay and found the spare battery charger kit for the LG v20 for 50 bucks. Love the little charger it comes with.
I also bought this 2 pack battery and wall charging unit from YISHDA on Amazon. The batteries aren't too bad. They don't last as long as the original battery the phone comes with but come in handy. But I'm a nerd and have 3 extra batteries now.
Rarely use the charge cable and if i do its for the battery charger from the LG lit aha. I keep a battery and wall charger at work and at home so it's been pretty sweet not having to leave the phone on a chord charging. Clol with swapping a battery and keeping it moving.

I bought one of those LG battery and charging cradle sets from a seller in Amazon. They look original, however, the battery after a few months of use started to overheat and make my phone c-r-a-w-l so much that I had to resist smashing it to the floor when it was taking forever to swipe the notifications. I switched to the original battery (which already had been used for a year before swapping it for the one in the set) and my phone flies!
I don't know if the battery was second quality, but I just ordered one directly from LG to make sure that is going to be original.
Sent from my LG-H910 using Tapatalk

I purchased the LG BCK 5200 battery and charger kit for £30 on eBay (not from China). Its a genuine OEM item and I've had no problems with the battery, its just as good as the original.
Maybe yours was a fake item, there's plenty of that on eBay.

dumpystig said:
I purchased the LG BCK 5200 battery and charger kit for £30 on eBay (not from China). Its a genuine OEM item and I've had no problems with the battery, its just as good as the original.
Maybe yours was a fake item, there's plenty of that on eBay.
Click to expand...
Click to collapse
Is it possible you could let me know the seller or send the url please - I'm also in the UK

haris163 said:
I bought one of those LG battery and charging cradle sets from a seller in Amazon. They look original, however, the battery after a few months of use started to overheat and make my phone c-r-a-w-l so much that I had to resist smashing it to the floor when it was taking forever to swipe the notifications. I switched to the original battery (which already had been used for a year before swapping it for the one in the set) and my phone flies!
I don't know if the battery was second quality, but I just ordered one directly from LG to make sure that is going to be original.
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Click to collapse
You know I did that in Feb if this year also. I dug around until I found the highest rated battery for the V20 on Amazon. There is a brand by TQTHL that claims to be rated at 3,300 mAh. The link free below, and it's a couple dollars cheaper now than when I paid for it.
[LG V20 Battery | UPGRADED TQTHL 3300 mAh Li-Ion Replacement Battery for LG V20 [H918 (T-Mobile),H910 (AT&T),VS995 (Verizon),H990 (U.S. Cellular),LS997 (Sprint)]
ASIN:

woldranger said:
Is it possible you could let me know the seller or send the url please - I'm also in the UK
Click to expand...
Click to collapse
I've searched again but there are no UK sellers with this item.
And I can't remember the seller, and eBay is of little help....

I have 4 fast chargers and all 4 work perfectly.
1. Lenovo ZUK Z2 Charger with Qualcomm Quick Charge 2.0
2. Leeco LePro 3 Charger with QC 3.0
3. 35W HP Elite X2 1012 Charger (maybe QC 5.0 lol it can push upto 19V but it has stepping supply 5V, 9V, 12V, 19V and intelligently supplies appropriate voltage, no issues with it either
4. LG's Fast Charger which is QC 2.0
So basically get any Qualcomm QC certified charger

I changed mine with a Perfine 3200mah battery 4 months ago, and I'm really satisfied with it. I would totally recommend it.
I also stopped using the original LG charger when I found out that QC degrades battery life, and I believe it to be true, at least in my experience with a few phones supporting QC 2 and 3.0.
since I stopped using quick chargers, my phone batteries last a lot longer. my 2 cents.

buongu said:
I changed mine with a Perfine 3200mah battery 4 months ago, and I'm really satisfied with it. I would totally recommend it.
I also stopped using the original LG charger when I found out that QC degrades battery life, and I believe it to be true, at least in my experience with a few phones supporting QC 2 and 3.0.
since I stopped using quick chargers, my phone batteries last a lot longer. my 2 cents.
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A couple of the Amazon reviews noted that this got very warm. Have you noticed this?

itm said:
A couple of the Amazon reviews noted that this got very warm. Have you noticed this?
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Click to collapse
not in my case :good:

DerekAC said:
You know I did that in Feb if this year also. I dug around until I found the highest rated battery for the V20 on Amazon. There is a brand by TQTHL that claims to be rated at 3,300 mAh. The link free below, and it's a couple dollars cheaper now than when I paid for it.
[LG V20 Battery | UPGRADED TQTHL 3300 mAh Li-Ion Replacement Battery for LG V20 [H918 (T-Mobile),H910 (AT&T),VS995 (Verizon),H990 (U.S. Cellular),LS997 (Sprint)]
ASIN:
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Click to collapse
This is the brand that I'm using right now. Been about 6 months now and haven't had any problems. Feels comparable to stock. This one is tops.

I bought a 4100mAH battery for myself and my brother-in-law off Qoo10 website in Singapore.
The battery was the same size as the original so you could easily slot it in. The amazing part was that the battery lasted at least 1/3 longer than our originals!
Here are the websites in case you want to check them out:
Singapore Shipping
https://www.qoo10.sg/item/PREMIUM-LG-V20-BATTERY-2018-4100MAH-HIGH-CAPACITY-FREE-SHIPPING/637689863
International Shipping
https://www.qoo10.com/item/PREMIUM-LG-V20-BATTERY-2018-4100MAH-HIGH-CAPACITY-INTERNATIONAL/638147048?banner_no=185296

DerekAC said:
You know I did that in Feb if this year also. I dug around until I found the highest rated battery for the V20 on Amazon. There is a brand by TQTHL that claims to be rated at 3,300 mAh. The link free below, and it's a couple dollars cheaper now than when I paid for it.
[LG V20 Battery | UPGRADED TQTHL 3300 mAh Li-Ion Replacement Battery for LG V20 [H918 (T-Mobile),H910 (AT&T),VS995 (Verizon),H990 (U.S. Cellular),LS997 (Sprint)]
ASIN:
Click to expand...
Click to collapse
I am using this as well. Have had them since February 2018.

tube517 said:
I am using this as well. Have had them since February 2018.
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Click to collapse
Are they any good? Any noticeable improvement over the stock battery?

itm said:
Are they any good? Any noticeable improvement over the stock battery?
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Click to collapse
Like I said. So far, been very good.
I'm getting 1-2 hours more than the stock battery. Not much but I just wanted spare batteries.

Does anyone have an updated link? It doesn't seem to be working for me.

https://m.newegg.com/products/9SIAH9B7US2880
Newegg has the kit

Using Perfine 4100 bought from here for 30 days.
Battery is a bit more thicker than the original one but fits with a light pressure applied.
No overheating while charging or using, measured capacity is about 3850 MaH and lasts at least 25% more compared to the original one.

Couple Battery Questions

Got 2 new batteries and I want to keep them for a while, so I have a few questions:
1. Is the OEM fast-charge charger and cable okay to use every day, or will it degrade the battery faster than a slower/regular speed charger/cable?
2. Since I have 2 batteries now, which is the best way to charge them both up? charge 1 in the phone, then swap and charge the other in the phone? Or buy a battery charger (and if so, which one)?
3. Any other helps regarding the chargers and/or cables?​Thank you for your help.

Faster charging will always generate more heat and put more stress on the battery, so slower charging would be better for a battery's lifespan, but I don't think you'll see a huge difference within two years.
By far the fastest way to keep going is having the second battery charged in an external battery charger and then swap when the other battery gets low, followed by charging the low battery in the external charger. Doing it this way also puts the least wear-and-tear on the phone's charging port since you'll rarely use it. I use LG's OEM external battery charging cradle (BCK-5200), but it may be hard to find nowadays. There's currently a used one up for sale in an auction by an American seller on eBay, and there are new ones from a South Korean seller for a higher fixed price. I wouldn't pay more than $25 for one. As for charging time, for me, it takes about 4 hours to charge my MaxxxJuice 4100 mAh batteries from ~5–10% to full. External chargers do not fast-charge, so you'll never put too much stress on the battery that way. Of course, swapping may not be for everyone as it may be inconvenient to take a case off and put it back on.
Unlike the older microUSB cables, bad USB Type-C cables that are not built to certain specifications can draw higher currents and destroy the devices they are charging. A few years ago, a Google engineer reviewed lots of USB-C cables on Amazon to give his view on those. If you need a third-party cable, make sure you get one from a reputable source with good reviews. My preferred USB cable is Anker's Powerline+ due to their extra strength/thickness, and I don't need much flexibility/twistability in my cables. Also, I like how the USB-C end connector is made of one single piece where you don't see any connecting lines around the middle (you can see an example here).
Other thoughts:
As long as there is a supply of extra batteries around and you can afford to buy them when the time comes, then you shouldn't worry much about how you charge your phone. In my opinion, that is one of the main selling points of having a hand-removable battery. I imagine a paranoid person on a phone with a sealed battery would be trying to keep the battery level between 40 and 80% at all times. So really, the only thing to worry about is having a decent USB-C cable and making sure the phone's charging port is clean and not worn out.
In case you are really interested on my detailed charging habits and related things on my V20, I discussed them while reviewing my batteries a while back on the V20 Subreddit.

Thanks!

C D said:
Faster charging will always generate more heat and put more stress on the battery, so slower charging would be better for a battery's lifespan, but I don't think you'll see a huge difference within two years.
By far the fastest way to keep going is having the second battery charged in an external battery charger and then swap when the other battery gets low, followed by charging the low battery in the external charger. Doing it this way also puts the least wear-and-tear on the phone's charging port since you'll rarely use it. I use LG's OEM external battery charging cradle (BCK-5200), but it may be hard to find nowadays. There's currently a used one up for sale in an auction by an American seller on eBay, and there are new ones from a South Korean seller for a higher fixed price. I wouldn't pay more than $25 for one. As for charging time, for me, it takes about 4 hours to charge my MaxxxJuice 4100 mAh batteries from ~5–10% to full. External chargers do not fast-charge, so you'll never put too much stress on the battery that way. Of course, swapping may not be for everyone as it may be inconvenient to take a case off and put it back on.
Unlike the older microUSB cables, bad USB Type-C cables that are not built to certain specifications can draw higher currents and destroy the devices they are charging. A few years ago, a Google engineer reviewed lots of USB-C cables on Amazon to give his view on those. If you need a third-party cable, make sure you get one from a reputable source with good reviews. My preferred USB cable is Anker's Powerline+ due to their extra strength/thickness, and I don't need much flexibility/twistability in my cables. Also, I like how the USB-C end connector is made of one single piece where you don't see any connecting lines around the middle (you can see an example here).
Other thoughts:
As long as there is a supply of extra batteries around and you can afford to buy them when the time comes, then you shouldn't worry much about how you charge your phone. In my opinion, that is one of the main selling points of having a hand-removable battery. I imagine a paranoid person on a phone with a sealed battery would be trying to keep the battery level between 40 and 80% at all times. So really, the only thing to worry about is having a decent USB-C cable and making sure the phone's charging port is clean and not worn out.
In case you are really interested on my detailed charging habits and related things on my V20, I discussed them while reviewing my batteries a while back on the V20 Subreddit.
Click to expand...
Click to collapse
On that Subreddit, you mentioned you cycled a couple batteries. Did you have to do the whole fully charge and fully drain thing each time you switched to the new battery, or just when you first bought the batteries?

Would like to know the answer to ^this^ as well.

baldybill said:
On that Subreddit, you mentioned you cycled a couple batteries. Did you have to do the whole fully charge and fully drain thing each time you switched to the new battery, or just when you first bought the batteries?
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Click to collapse
pistacios said:
Would like to know the answer to ^this^ as well.
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Click to collapse
No, I only did the full cycle with the first battery three times, and that was it. The only reason to do that is for the Android software of the phone to get a better sense of your battery level. Of course, it won't be as accurate the longer you go swapping between batteries as undoubtedly they will differ a bit in capacity over time. But fully running down and then fully charging a battery isn't good for its lifespan if you do it too often. The only other times you'd have to really repeat the calibration is when switching to a battery with a different capacity or switching ROMs / doing a factory reset.

C D said:
No, I only did the full cycle with the first battery three times, and that was it. The only reason to do that is for the Android software of the phone to get a better sense of your battery level. Of course, it won't be as accurate the longer you go swapping between batteries as undoubtedly they will differ a bit in capacity over time. But fully running down and then fully charging a battery isn't good for its lifespan if you do it too often. The only other times you'd have to really repeat the calibration is when switching to a battery with a different capacity or switching ROMs / doing a factory reset.
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Click to collapse
So, I got a 4000 Powerbear that I'm calibrating now.
I'm also getting a 4100 Perfine.
Are they close enough that I shouldn't have to recalibrate for the 4100?

baldybill said:
So, I got a 4000 Powerbear that I'm calibrating now.
I'm also getting a 4100 Perfine.
Are they close enough that I shouldn't have to recalibrate for the 4100?
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Click to collapse
Most likely yes. I imagine most of these 4000–4300 mAh Lithium polymer batteries that started popping up this year are very similar, and some may just be rebranded from the same common factory source. Barring a defective battery, if the two batteries had a significant difference in capacity, you could see things like early shutdowns on the smaller capacity one or being stuck at a low percentage for an unusually long amount of time on the larger capacity one.

Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.

pistacios said:
Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.
Click to expand...
Click to collapse
Pretty much this. I suppose one could try keeping separate copies of the batterystats.bin file from /data/system when rooted and swap them alongside the different batteries. But that sounds like too much of a pain to deal with, even if it works.

C D said:
Most likely yes. I imagine most of these 4000–4300 mAh Lithium polymer batteries that started popping up this year are very similar, and some may just be rebranded from the same common factory source. Barring a defective battery, if the two batteries had a significant difference in capacity, you could see things like early shutdowns on the smaller capacity one or being stuck at a low percentage for an unusually long amount of time on the larger capacity one.
Click to expand...
Click to collapse
pistacios said:
Great info.
So it looks like all other batteries on hand should not be put into rotation with the higher capacity batteries to avoid inaccurate readings in Android.
Click to expand...
Click to collapse
C D said:
Pretty much this. I suppose one could try keeping separate copies of the batterystats.bin file from /data/system when rooted and swap them alongside the different batteries. But that sounds like too much of a pain to deal with, even if it works.
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Click to collapse
Just to add to this, I found your pics @C D for the charging instructions and there's a note about using 3200mah batteries along with the 4100mah batteries.

pistacios said:
Just to add to this, I found your pics @C D for the charging instructions and there's a note about using 3200mah batteries along with the 4100mah batteries.
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Does that mean that if you switch between the batteries, they'll both last as long as they should (the 4100 longer time than the orig. 3200), but the system's percent will be wrong?

My understanding is that if you calibrate the phone to recognize the full 4100mah and then use a 3200mah battery, it will shut down early (but still use the full 3200mah).

Correct. They are warning you that swapping between batteries of significantly different capacities will throw off the accuracy of the phone's battery percentage indicator at all times, especially at the high and low percent values (so an early shutdown can happen when the smaller capacity battery is used). Of course, this won't affect either battery's true capacity.
I'd pay good money for a system that can correctly handle different battery capacities of any amount, but we all know where the future of hand-removable batteries has been heading for the last 3–4 years.

Does anyone charge their phone ONLY to 80 % or so?
If so, what apps do you use to limit this? Any other tips/advice?

baldybill said:
Does anyone charge their phone ONLY to 80 % or so?
If so, what apps do you use to limit this? Any other tips/advice?
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I use AccuBattery and it has a notification sound that plays when you hit the target charge percentage, but it's still up to you to remove the phone from the charger or else it continues charging to 100%.
Since our phones have replaceable batteries, I haven't made any special effort to take care of them. I have a pair of May '17 OEM 3200 mAh batteries that are going to get switched out for a pair of new 4100+ mAh Li-Po batteries once I get my second V20 set up. Every charger I use is QuickCharge 3.0 certified except for USB on my PCs and my Pioneer Android Auto headunit USB connection in one car. The vast majority of the time, I charge via QC 3.0. Pretty much the only time I let the battery charge via PC USB is when I actually need to transfer files between the phone and computer.
Before my phone started having issues in the past month with a phantom power drain, I would let the phone charge from 30-40% to 80-90% and then remove it from the charger at night before going to sleep. In the last half year as the batteries have aged, I've let it get up to between 90-95% before unplugging. For the past month, I've been charging the phone four times a day from 40-100% to combat the power drain issue, but that comes with knowing that I don't care about these old batteries or the state of the firmware on this first V20 anymore.
As for when I swapped the two batteries I have, that entirely depended on when I actually ran one down so far that I needed a 0-100% battery swap, which could be months at a time and usually happened while on vacation or away from a charging source for a longer period of time than what my usual home/car/work routine allows.