yashsingh1/xdaforums huggingface dataset:
[G2 Accessories] Glpcha:
I have mine for about a month now. No problems whatsoever with the battery. I'm on exodus rom with lambda kernel and this is todays battery life:

http://imgur.com/Gary6mF

http://imgur.com/mrpbmVN

Usage is mostly Chrome, Relay, Youtube, etc. I don't play games. Usage is probably 50-50 (wifi/3g)

P.s. Only downside to this battery is that it doesn't properly measure battery temperature, something to do with resistor instead of thermistor. You can read more here:

http://reviewjolla.blogspot.hr/2015/09/test-compatible-batteries-for-jolla.html
[G2 Accessories] silvano2:
https://www.aliexpress.com/item/New...32355271605.html?spm=2114.13010308.0.0.QipQFt

3980mAh BL-T7 Battery Use for LG Optimus G2 D802 D803 4G LTE D800 D801 LS980
[G2 Accessories] UncleRipper:
I'll never trust this chinese batteries. They are always half of what written.

You can always try and report back ;)
[G2 Accessories] UncleRipper:
Thanks for the report! This battery is amazing!
[G2 Accessories] silvano2:
nope .no chinese..it is japanese and up to my lg d802..great battery
[G2 Accessories] Snowjack:
could you, please, provide more information about your experience with this battery? Size and weight compared to original, daily usage, battery lasting and time to fully charge? Thanks
[G2 Accessories] silvano2:
its great quality battery and size like original..i dont care about weight... time to fully charge is like original too

and for battery lasting depends of your usage i suppose...for me its enough for 2 days
[G2 Accessories] Ionut_Hw:
How is your experience after a week of usage? :D

Do you have AccuBattery app installed? It has some nice features like „real measured capacity” and „battery health”.

Edit: this is my 27 months old original battery.
[G2 Accessories] Uechy:
NFC working? [MENTION=5057738]UncleRipper[/MENTION]
[G2 Accessories] UncleRipper:
Installed now, if you want I can report to you in a while.

Overall good, surely better than my old battery. But I'm changing ROM almost daily. I'll try to settle a bit with cm 14.1.

Thanks for the app suggestion, seems a really well made app.

Really don't know. I' ve tried with my brother's Oneplus3 but nothing.

I never used it and I'm on cm 14.1 with a lot of strange issues, so nothing sure.
[G2 Accessories] Ionut_Hw:
Yes, it would be nice if you can share with us stats from the app. Thanks!

Btw, which ROM do you recommend now?
[G2 Accessories] UncleRipper:
Damn, need to reinstall it.

I went from cm 14.1 to Orion OS, my previous rom and lost all the stats.

Right now a good rom probably is cm 13, it is refined and stable. Flash lambda on it and you are good to go.

Btw Lambda is more battery friendly on beta N9 of previous update (hypnose? Really don't remember)
[G2 Accessories] coolhandfluke:
I replaced my battery with the polarcell battery 5 weeks ago. I would say performance is at least as good as the original battery was when new.
[G2 Accessories] 4everAnoob:
Dude wth... "you don't care about weight" It is all about the weight. If the battery is not 43 grams like the original it is ALWAYS worse than the original.

Just saying "yeah it feels good" is useless. Why are you so unhelpful when someone asks you a reasonable question??

I want to get the Polar Cell as well, but more than 20 euros for a battery is a lot for me..
[G2 Accessories] Ionut_Hw:
If you have planned to keep the phone for at least another 6 months, I think you can do an effort and buy this battery. I've tried a cheaper battery, an "original" one from a local store here in my country (15eur) and it was an ordinary fake (28 grams). Now I am waiting for my order from cellephone.
[G2 Accessories] saarxee:
I have the original one - 3 Years and works good but no amazing..

I need to replace? polarcell or new original?

I afraid to use another battery
[G2 Accessories] Ionut_Hw:
„New original” does not exist. All the batteries on the market that pretend are original are fakes. The only original battery is one that is taked from another G2.

Akku Polarcell is the best solution you can get.
[G2 Accessories] Ionut_Hw:
Ok, I have put the new Akku Polarcell (???) battery in my G2 the day before yesterday. Here I will post some pics of the battery and swaping process, then I will update the post with battery stats in the near future.

1. I had purchased the Akku Pollarcel battery from here: https://www.amazon.de/gp/product/B00VJ8FKRU/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 and I received this .

Now, there are 2 scenarios: cellephone.de sent me a fake chinese battery, or they are buying all of batteries from X-longer and then are making a rebranding with Polarcell skin. However, the battery it may be ok, but this will find out in a couple of days/weeks.

2. The X-longer battery weighs 44 grams, which is almost the same weight of original battery, The only problem is the battery has the same thickness on all its surface, and the connection cables from charging driver, audio jack and speaker add some thickness => the back cover doesn't fit anymore without some important amount of force.

3. After 2 charging cycles, AccuBattery app rated the battery at 2700 mAh, but it may be not so relevant (I've tested in the past with 3 kernels on original battery and every time the result was different). However, i had got 5hr of SoT on the first full charging cycle - this is woow for me.

Photo thread

[EDIT1]:

Some stats taken in the past year with the original battery (28 months old):

Averages per complete charge with CloudyG2 3.3

Averages per complete charge with MM (DU V10.4)

Averages per complete charge with Nougat (RR v5.8.0)

WiFi and 4G always on, location on High always. Greenify, push mail, Facebook, Instagram, etc, etc. Mid to heavy usage.

Battery health

[Edit2]:

Stats after 2 complete charging cycles
[G2 Accessories] don_dolarson:
What's about NFC, is it working with AKKU Polarcell ordered from Germany polarcell website?
[G2 Accessories] don_dolarson:
I believe that the little chip right under BL-T7 in original battery stands for NFC. I've two LG G2s and changed battery on both of them. LG G2 #1 battery has been changed for 1 year ago and it have that chip and NFC is working, LG G2 #2 haven't it and NFC isn't working. I bought a new battery for LG G2 #2 for 1 month ago and recently changed it and it looks like original but it's not the same thickness, width and height as the original one which came with the phone back in 2013 when I bought it. I've ordered both in the same shop in Sweden and both sold as "Original LG G2" battery. I'm gonna send that back to them.
[G2 Accessories] UncleRipper:
[MENTION=4431979]Ionut_Hw[/MENTION] This isn't an akku battery, it is far looking from mine.

I have added few photos of mine in this album: http://imgur.com/a/c4BN3

This is like a certificate I think http://i.imgur.com/dfl1Iwn.jpg

Btw, why you purchased from amazon when cellphone has a official store?
[G2 Accessories] Ionut_Hw:
The cellephone store from Amazon is legit. Look at their address: http://imgur.com/a/lTLkC

Now I will send back to them the battery and I hope to get a genuine (Akku) one.

The Akku cell is rated at 3200 mAh. Can you tell me please what capacity is measured by AccuBattery app? Thanks in advance.
[G2 Accessories] UncleRipper:
Sorry, dropped my g2 at the end of november. I'll buy another next week.

Maybe they just copy-pasted that text. I still recommend the original site.
[G2 Accessories] Ionut_Hw:
Oh, I'm sorry to hear that. Do you plan to buy a refurbished one and to use it further with the Akku battery?
[G2 Accessories] UncleRipper:
Today I found one G2 in good conditions for 100€ with shipping, not bad.

I will surely put the akku battery in it.
[G2 Accessories] Ionut_Hw:
Even this X-large fake Akku wannabe battery has NFC: http://imgur.com/aXDbL7R

That means the real Akku Polarcell one has working NFC for sure.
[G2 Accessories] don_dolarson:
I asked the source and by this I mean cellphone and their answer was that the battery doesn't have built-in NFC.
[G2 Accessories] kili3981:
I got this one (for the money I decided to give it a shot). it works fine, got my Screen on time from 2-3h to 5h or more. However, when charging, it will charge up to 95-99% and then, while still plugged in, go down to 83% and stay there. Then when I unplug it and start using it, it first goes back up to 90-95% before going back down like normal. Has anyone experienced something like this and/or know a way to fix it? I tried some battery calibration methods but no luck. Also, since the phone rarely reaches 100% (indicated) it doesnt always reset the screen on timer properly... this makes it difficult to keep accurate track of its performance. when it does work 5h seems to be the usual value.
[G2 Accessories] Eiion:
Since I'm on the lookout for a new battery I checked their website - and they now have two.

REMOVED LINK for 17.90€

and

REMOVED LINK for 19.90€

If you take a look, you can see that the image is just slightly modified - same goes for the title. I wonder if the cheaper one is the battery [MENTION=4431979]Ionut_Hw[/MENTION] got. (BTW lonut, how did things turn out after you've send it back, did you end up getting the powercell?) Apart from this I also rather buy from the Amazon shop - for... reasons. Other sellers seem to offer the powercell as well.

Also, just wondering... giving up NFC and temp sensor for the battery seems wrong to me. Oh, the decisions...

Anyways, I'm hesitating - 20/22 inc. shipping seems like a lot compared to what I've payed in the past for replacements.

(Not sure if the links get removed or not - but a visit on the cellephone website should show what I'm talking about.)

EDIT: Nope, the links didn't survive.
[G2 Accessories] UncleRipper:
My battery is the 19.90€ one.

I've never used NFC in my whole life, so no big deal for me.

Since the battery was never too hot I guess not having the sensors is fine.

I still recommend this battery, I am doing 5.30 hours of SOT every day.

Where are you from? I received the battery in a week if I remember correctly, the shipping was super fast
[G2 Accessories] Eiion:
How'd you know that the battery was never too hot? I mean, I have no idea if the phone's safety features (e.g. lower CPU frequency) will still work without the phone being able to check the batteries temp.

I'm getting 2-3 hours SOT with the original battery and heavy use (I guess) on the hardware side, with the display on the lowest brightness though... Basically 80% down within two hours. Which for me seems to be the point where it's getting annoying. (When it was new I got almost 7 hours SOT out of it - with medium use. It lasted me 2 days.)

To were I live it probably would arrive within 3 days.

Anyways, yours still working is good news!
[G2 Accessories] dgm_mixtoon:
polarcell is good for nexus 5?
[G2 Accessories] UncleRipper:
It won't fit. I had a Nexus 5 and someone tried that.

You need to remove some plastic and mod the battery connector.

It was a great boost but I can't recommend it. You need to remove the wireless charging module if I remember correctly.

You can search XDA, there is a thread with the instructions.

Probably worth it only if your device is old and it's not your primary phone.
[G2 Accessories] 4everAnoob:
I installed this battery today.

Also did clean Lineage OS install.

Initial impression in terms of battery life is positive.

My old battery got 2 hours SOT with roughly 25% left.

Now, the problems...

Yep, same here. Bulge in the cover below volume down key. HOWEVER, I also installed a thermal pad on the cpu, possibly raising the mainboard a bit.

Now this a problem here as well. Unfortunately, mine also seems to have funky voltage measurements. Example, connecting the charger, the voltage shot up from 3.8 volt to 4.1. It sometimes went DOWN while it was charging. Percentage is stable and seems to work OK. So I dont know if it is glitching, or that the voltage measurements are actually off, which would be bad news obviously. I will run it down to 0% soon to check stability.
[G2 Accessories] Ionut_Hw:
I never send the battery back, because I ended up with a cracked G2 (display cracked, but touchscreen intact (!!!)) and now I use a dual sim G3 (D858HK).

G2 will be fixed next month I think and I will use it further... I just don't like the G3.

If you look how the screen was cracked, and knowing that the fake (?!) Polarcell battery is thicker than the original one ---> the back panel pushes the battery into the screen which was too tensioned and it cracked at first drop (from a ~ 40cm height). http://imgur.com/a/BEM9U
[G2 Accessories] 4everAnoob:
Oh that sucks. I think it must be even thicker than the PolarCell then, because there is some pressure for sure on the back cover with the PolarCell, but it is not like it is about to burst or anything. Still, it might indeed effect the ability to withstand drops.

My PolarCell came from Cellephone. Indeed, it is slightly thicker than the original. The back cover bulges slightly. The connector of the battery is longer, but if you are careful you can fold it down so that it doesn't sit against the back cover. It is kind of stiff but it will work. I placed a bit of tape on top of the battery connector (very thin) for extra security. I confirmed that my thermal pad mod (like often used on the G3 - you can do the same on the G2 to improve CPU temps at the expense of extra chassis heat) did not interfere with the back cover.

I am using Google Edition 1.5 with Amplify (Xposed) and stock kernel. I estimate I can get 4 hours SOT with moderately heavy mixed use, including lots of GPS usage. This is pretty good in my opinion and is roughly like the original battery. Obviously, the next few weeks will really deliver the proof.

Other things I should note (slightly OT), my GPS signal was weak, I fixed the by placing a 1mm thick double sided piece of tape under the GPS antenna connector, to force it against the motherboard connections. This works OK so far. My 2G/3G signal still fluctuates a lot but it seems reliable in practice overall. 4G I do not use unfortunately.

I overhauled my camera as well since I felt that the pictures were worse than the original - used new lens cover + new camera module (insanely cheap), but quality remains the same. Guess I am used to Sony APS-C quality and now I think G2 is a toy in terms of camera quality lol.

I really like the G2 still, I hope I can use it for at least 1 year but hopefully more. OnePlus 3T seems nice but does not blow me away at all (the G2 did when I got it).

Oh and finally, I see people talking about the NFC antenna in relation to the battery. It is my understanding that NFC has NOTHING to do with the battery. The antenna for NFC is integrated in the back cover (just like GPS antenna and a few more).

---------- Post added at 08:43 PM ---------- Previous post was at 08:37 PM ----------

NFC works here with PolarCell battery.
[G2 Accessories] don_dolarson:
That's strange because I've PolarCell battery for 19€ too and NFC isn't working. I asked PolarCell/Cellephone and they told me that they don't include NFC into the battery. If the NFC chip sits in the back cover then it would work. I've had original battery before and it worked.
[G2 Accessories] Ionut_Hw:
NFC is working here.

The main problem with this battery is that it doesn't have that „step” which the original LG battery have, as you can see here. That means the connectors are upper and pushes the back cover out in the curvature area.

https://i.ytimg.com/vi/N-Xcz2Pgrvo/maxresdefault.jpg
[G2 Accessories] don_dolarson:
The battery I got through cellephone website doesn't look like yours and mine fit very good under back cover with no pushes.

Here's how mine looks like
[G2 Accessories] 4everAnoob:
Honestly not sure what to think of this battery atm.

Best I have gotten out of it on stock is about 4 hours screen on time, without using GPS and alsmost no YouTube, just browsing and maybe some whatsapp.

So started using custom kernel, amplify, some extra xposed stuff, greenify and battery got worse lol.

Now using LineageOS and the battery is definitely better, especially when not using the phone.

Still can't see any way to get more than 4 SoT though.

3 SoT seem to be the norm with moderately heavy usage.

And yes, this battery does slightly push up the back cover. I got a new back cover because my GPS signal was very weak.

Initially after installing the new cover I got amazing signal, but then after an hour it becomes weaker again, probably because the back cover gets pushed up very slightly.
[G2 Accessories] keyzjh:
[MENTION=5057738]UncleRipper[/MENTION] Great share about the Powercell.

Can you share the steps needed to replace the battery, and what tools are required (solder, glue gun?). I am considering replacing it myself as repair shops refuse to fit in a battery that they didn't purchase themselves.
[G2 Accessories] UncleRipper:
Thanks, glad to be helpful.

It's late in my country, but I can tall you that on youtube and on ifixit there are all the steps to perform this operation. It's easy, don't worry!

I've used a flat screwdriver and a little one for the tiny screws inside the phone.

Perhaps tomorrow I can link the video or a guide, but now I need to sleep, sorry my friend.
[G2 Accessories] keyzjh:
Thanks! I saw a detailed video on D800, and mine is a D802, I suppose they are identical in hardware?

Can you also share a picture showing the bulge of the back cover resulting from the PolarCell being slightly too thick?
[G2 Accessories] UncleRipper:
They are the same, no problems.

Not right now. With a camera is hard to tell the difference, I can try to show you the difference with a caliper.

I also found that is a bit hard to make covers fit the phone, they stretch a bit.
[G2 Accessories] keyzjh:
I ordered the Akku from cellphone.de. And I have gotten the same 'fake' battery from X-Longer with 3000mAh.

Seems like this store is a bit problematic. Might initiate a return
[G2 Accessories] matteo0026:
Ok, I bought a polarcell battery, I'll tell you how is it when it arrives and the first cycle of recharges!
[G2 Accessories] 4everAnoob:
Personally, I am not satisfied with this battery right now.

I am on the latest AICP nightly, clean install with all settings carefully configured. My standby time is excellent (fixed it by making sure apps can't keep the phone awake, using privacy guard).

As can be seen from the screenshot, it struggles to get 3h SoT. This is with heavy WiFi browsing with some YouTube thrown in.

Phone heats up quite a lot. I tried efficient profile, makes small difference and gets much laggier.

Stock kernel.

I tried lambda kernel once but it is not stable for me.
[G2 Accessories] 4everAnoob:
Latest build AICP 26-07 has improved SoT so far. So this battery still seems to be pretty good.
[G2 Accessories] matteo0026:
Guys after about 2 weeks of testing i have to tell you that I'm not completely happy with this battery. AccuBattery measures 2600 mAh (80%) of capacity and I reach 3 hours of SoT with every ROM. So for me it's aa step better than other batter because it was very bad, but I can't get the 5-6 hours of SoT as some people did. And now I'm on lollipop with the best ROM in terms of battery life and I reach every day 4 h of SoT
[G2 Accessories] berlo:
Cellephone.de send me a "X-longer" battery, not a Polarcell ...
[G2 Accessories] arber96:
This is polarcell's official site http://www.polarcell.de/ here you can find their shop http://www.wannsee-electronic.de/

Lg g2 batteries are out of stoke , i send email to them they replay me back, here is the email:

Dear Sir,

actually we stopped this G2 battery because of those mentioned problems with the size and I donnot know when it will be available again as so far we have not got the correct one from our suppliers. And of course if there are any problems you can return our batteries.

Best regards

Vincent Mattstedt

p.s. My lg g2 is taking 4 hours to charge is this battery fault?, i have tried different charger/cables but no changes. I'm using it for the past 3 years (72% capacity).
[G2 Accessories] vinc_91:
I ordered 2 weeks ago and status was "wenige auf lager" which mean few more left. I tought it meant "waiting supply" so I was surprised the item to be send quickly.

I received the polarcell battery after 2 weeks from germany to france.

I just installed it yesterday and I am testing it. I can confirm the form of the battery isn't the same as the original : it is a little thicker on the sides but you can close the cover with no problem and the GPS continue to work fine with the cardboard fix.

I am now wondering if the charge voltage isn't too high (4,3v) for a good lifetime of the battery
[G2 Accessories] arber96:
I don't think you need to concern for voltage, but if you really are you can try not to charge battery to 100% (maybe 80% or 90% it will help with the battery lifetime).

Did they send you the same as you ordered not that x - learger one. I’m a bit wonder about that extra thickness it may put stress on the screen and brake it.

p.s. In which site did you order http://www.wannsee-electronic.de/ or http://www.cellephone.de/.
[G2 Accessories] vinc_91:
I ordered from http://www.wannsee-electronic.de/ and receive the one I ordered : http://www.wannsee-electronic.de/ha...g_g2_ersetzt_originalakku_bl-t7_i13_593_0.htm

I did order from http://www.cellephone.de/ and received an X-longer battery which I have sent back.

I really don't have any problem with the thickness and I don't think it can affect the screen.

I did some research about battery voltage and I guess batteries on LG G2 are High Voltage battery with max 4.3v.

Found out same as you : It seem that it last longer if charged to 80% but you don't really need to worry about about it.
[G2 Accessories] cncyanide:
Are you satisfied with battery ? it is really 3200map [MENTION=4860595]vinc_91[/MENTION]
[G2 Accessories] willtryall:
Here is my experience with the Polarcell battery.

In the first months, the performance was in order.

But now after 9 months of use the problems begin.

The mobile phone switches off under 30 percent capacity.

It can not be turned on again. I need to recharge the battery again so I can turn it on.

Funny, he shows a charge of 30 to 50 per cent immediately, as soon as the charging device is plugged in,

sometimes so differently.

I guess the Voltage collapses.

Now I will order a last battery.

Let's see how this works after a longer period of use

https://www.handytreff.de/detail/10...-einbauakku-geraet-muss-geoeffnet-werden.html

[MENTION=7998860]translate[/MENTION] by google
[G2 Accessories] vinc_91:
[MENTION=8596718]cncyanide[/MENTION] so so ... my feeling is that the battery is better than my 4 years old one but maybe not as good as original one at the beginning.

With battery voltage notification app I can see that there are lots of voltage drops when putting on the screen and when using the camera especially with low battery. I can't say if it's normal battery behavior but maybe this is why willtryall get his phone switched off.

I m using the very good app : bettery charge limit from xda so the charge don't exeed 90% (need root) and I m hoping it will help the battery life. I have use in the past a polarcell battery with a samsung galaxy S1 and I remember the battery lifetime wasn't so good but it was a long time ago.

Finally I can last 2 days with one charge with moderate use but the SOT is not so good (maybe 3h) I think cm13 was better for battery autonomy.
[G2 Accessories] berezker:
Try to calibrate the battery

there's an app in the play store called battery calibration
[G2 Accessories] kili3981:
NFC has

nothing

to do with the battery, as some people mentioned before the NFC antenna is located in the back cover

not the battery!

.

If NFC does not work anymore you should try and raise the contact pads on the back cover by sliding some paper underneath. probably the battery is pushing the cover up and away from touching the pads.
[G2 Accessories] don_dolarson:
I have tested it a lot of times and after swapping back to my old ORIGINAL battery, NFC started to work. Swapped again to PolarCell battery and NFC stopped to work. Put original one (again) and it started to work again. You can have you own theory, I have mine, 2x LG G2 D802, a bunch of "original" batteries from China and have well tested it.