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LG V20 Lithium Polymer vs Lithium-Ion batteries in 2019? Dangerous?

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Merazomo

Senior Member
Aug 14, 2014
212
61
I've been reading some great things about LG V20 batteries such as the "Perfine 4100mAh" and the "SHENMZ 4200mAh" mainly, not only because of the great battery improvement, but because it seems you don't have to sacrifice the original battery cover since the batteries might just fit without getting an extended battery cover. On the other hand, they seem to be Lithium Polymer batteries. I have the bad habit of leaving my LG V20 charging overnight as I always lose a good 8% battery life during the night if I don't. I've never had a problem with the OEM battery in terms of overheating or anything of that sort when leaving it charging.

Does anybody who has a Lithium Polymer battery on their LG V20 leave their phones charging overnight? I've heard it's a no-no with Lithium Polymer batteries, but they're definitely the future in terms of giving new life to the LG V20. I just want to know what to look for as it's not necessary and smart I'm sure to leave the phone charging for too long; however, that's what some people do.

Are those batteries a great improvement over a regular Lithium-Ion battery based on experience?
 
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C D

Senior Member
I have been using these batteries since last December, and when it comes to charging and heat, I haven't noticed anything that's different from the OEM batteries.
While I don't remember ever charging my phone overnight (my battery level doesn't get low until past the middle of the second day, and I mostly just swap batteries), I have charged the battery in the OEM external charger overnight several times before (you could do it outdoors first if you're scared), and it acted just like any other battery in there: the light turns green when charging is complete, and the heat stops.

As for how much better than the OEM batteries they are in terms of battery life, it's a significant step up. Plenty of people (including myself) have reported their findings on the V20 Subreddit.

I wouldn't be surprised if some of the modern phones actually have these types of batteries inside them.
 

Merazomo

Senior Member
Aug 14, 2014
212
61
I have been using these batteries since last December, and when it comes to charging and heat, I haven't noticed anything that's different from the OEM batteries.
While I don't remember ever charging my phone overnight (my battery level doesn't get low until past the middle of the second day, and I mostly just swap batteries), I have charged the battery in the OEM external charger overnight several times before (you could do it outdoors first if you're scared), and it acted just like any other battery in there: the light turns green when charging is complete, and the heat stops.

As for how much better than the OEM batteries they are in terms of battery life, it's a significant step up. Plenty of people (including myself) have reported their findings on the V20 Subreddit.

I wouldn't be surprised if some of the modern phones actually have these types of batteries inside them.

Okay, thanks for the feedback. I can barely make it through a day with moderate to low usage on my OEM battery. The question would be if the LG V20's charging effectiveness is just as good/effective as an external charger; I would assume the answer is yes. I can't imagine an external battery charger being smarter than a smart phone, but who knows. I would like to do what you do in terms of swapping batteries instead of charging the battery directly from my phone, but my phone case is annoying as heck to remove, and I drop everything so I really need a case at all times.

Any battery recommendations? or are the "Perfine 4100mAh" and the "SHENMZ 4200mAh" some good options like people say. Thanks again.
 

C D

Senior Member
I actually use an Otterbox Defender as a case if you can believe that, although several plastic clips of the inner layer have broken off, so it's not hard at all to take apart nowadays.

I think all of those batteries should be pretty similar to each other (some of them could even come from the same source). I use the ones from MaxxxJuice which just happened to be the only ones available back in December. The one unique thing about these batteries is that they come with Samsung-branded plastic cases. The Perfine seems to be the most popular due to its cheaper price, but some people reported it being a tighter fit which led to some peeling off its brand sticker to make it fit. If you follow the Subreddit link above, you'll see my old thread on the MaxxxJuice batteries, and I put up some Amazon U.S. links to the other battery brands in there.
 
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Merazomo

Senior Member
Aug 14, 2014
212
61
I actually use an Otterbox Defender as a case if you can believe that, although several plastic clips of the inner layer have broken off, so it's not hard at all to take apart nowadays.

I think all of those batteries should be pretty similar to each other (some of them could even come from the same source). I use the ones from MaxxxJuice which just happened to be the only ones available back in December. The one unique thing about these batteries is that they come with Samsung-branded plastic cases. The Perfine seems to be the most popular due to its cheaper price, but some people reported it being a tighter fit which led to some peeling off its brand sticker to make it fit. If you follow the Subreddit link above, you'll see my old thread on the MaxxxJuice batteries, and I put up some Amazon U.S. links to the other battery brands in there.

Thanks for everything. I think I'm going to give the MaxxxJuice batteries a go. I'll probably just order a pair and see how it goes. By all the reading I've been doing on that reddit link you pointed me to, it seems that the "SHENMZ 4200mAh" seems to be a better fit on the LG V20; however, the "Perfine 4100mAh" although being capable of holding just about the same capacity as the "SHENMZ 4200mAh" based on the reddit posts I read, seems to be a tighter fit around the fingerprint reader since it's a little thicker.

The MaxxxJuice battery seems to be the best of both worlds.
 

Mysticblaze347

Senior Member
Jun 12, 2018
507
181
I've been reading some great things about LG V20 batteries such as the "Perfine 4100mAh" and the "SHENMZ 4200mAh" mainly, not only because of the great battery improvement, but because it seems you don't have to sacrifice the original battery cover since the batteries might just fit without getting an extended battery cover. On the other hand, they seem to be Lithium Polymer batteries. I have the bad habit of leaving my LG V20 charging overnight as I always lose a good 8% battery life during the night if I don't. I've never had a problem with the OEM battery in term of overheating or anything of that sort when leaving it charging.

Does anybody who has a Lithium Polymer battery on their LG V20 leave their phones charging overnight? I've heard it's a no-no with Lithium Polymer batteries, but they're definitely the future in terms of giving new life to the LG V20. I just want to know what to look for as it's not necessary and smart I'm sure to leave the phone charging for too long; however, that's what some people do.

Are those batteries a great improvement over a regular Lithium-Ion battery based on experience?

I personally have never had an issue charging overnight. Once it reaches 100% it does a trickle charge, at least in the phone. Got the 4200 that was mentioned by CD. If you are rooted, I suggest the AKT mod. Helps alot for battery also. Best of the mods I have came across based for battery. However AKT is ment for 7.0 last I knew.
 
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Merazomo

Senior Member
Aug 14, 2014
212
61
I personally have never had an issue charging overnight. Once it reaches 100% it does a trickle charge, at least in the phone. Got the 4200 that was mentioned by CD. If you are rooted, I suggest the AKT mod. Helps alot for battery also. Best of the mods I have came across based for battery. However AKT is ment for 7.0 last I knew.
Thanks. I'm rooted right now as I have the AT&T variant. The problem is that I'm on Oreo and learned to like it, and I plan on switching to Sprint very soon. As far as I know the Sprint variant can only be rooted if you're on Nougat but can never go back to stock once you root I believe. I wish there was a fully unlocked LG V20 like those iPhones and Galaxy phones that would also work with Sprint; the US996 has CDMA and GSM but won't work with Sprint either.

Just knowing that Lythium Polymer batteries also trickle charge is great for peace of mind though. Not that they're foolproof, but at least it's something.

Sent from my LG-H910 using Tapatalk
 

C D

Senior Member
Thanks. I'm rooted right now as I have the AT&T variant. The problem is that I'm on Oreo and learned to like it, and I plan on switching to Sprint very soon. As far as I know the Sprint variant can only be rooted if you're on Nougat but can never go back to stock once you root I believe. I wish there was a fully unlocked LG V20 like those iPhones and Galaxy phones that would also work with Sprint; the US996 has CDMA and GSM but won't work with Sprint either.

Just knowing that Lythium Polymer batteries also trickle charge is great for peace of mind though. Not that they're foolproof, but at least it's something.

Sent from my LG-H910 using Tapatalk
A rootable Sprint V20 is very hard to find nowadays. It has to be on a security patch level date of May 1, 2017 (software version LS997ZV7) or earlier. So not only does it have to be on Nougat, but also on an older, earlier security update of it. Curiously enough, both Mysticblaze347 and I happen to be using this type of Sprint variant.
There is an older thread somewhere about going back to stock on the LS997 after root, so it is possible, but I'd say a rooted V20 stuck on stock Nougat still beats an unrooted one on stock Oreo by a mile, and you still have the option to go with LineageOS.
 
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Merazomo

Senior Member
Aug 14, 2014
212
61
A rootable Sprint V20 is very hard to find nowadays. It has to be on a security patch level date of May 1, 2017 (software version LS997ZV7) or earlier. So not only does it have to be on Nougat, but also on an older, earlier security update of it. Curiously enough, both Mysticblaze347 and I happen to be using this type of Sprint variant.

There is an older thread somewhere about going back to stock on the LS997 after root, so it is possible, but I'd say a rooted V20 stuck on stock Nougat still beats an unrooted one on stock Oreo by a mile, and you still have the option to go with LineageOS.
I see. In any case, I think it might just be easier to switch to a cheaper GSM carrier and keep my phone the way it is; rooted. Even if it's on Oreo, I don't mind since I've used Google's "night sight" for pictures and it's pretty amazing. I don't want to go back to an unrooted phone without a swappable battery honestly. It's that important for me since I don't care about having the newest fastest phone anyway. All I care about is buying a new battery every now and then, and giving new life to my phone. I also like keeping full physical TWRP backups of my entire device as well as a Titanium Backup copy of all my apps, so root is a must like you said.

Sent from my LG-H910 using Tapatalk
 

woldranger

Senior Member
Apr 22, 2012
272
30
I have been using these batteries since last December, and when it comes to charging and heat, I haven't noticed anything that's different from the OEM batteries.
While I don't remember ever charging my phone overnight (my battery level doesn't get low until past the middle of the second day, and I mostly just swap batteries), I have charged the battery in the OEM external charger overnight several times before (you could do it outdoors first if you're scared), and it acted just like any other battery in there: the light turns green when charging is complete, and the heat stops.

As for how much better than the OEM batteries they are in terms of battery life, it's a significant step up. Plenty of people (including myself) have reported their findings on the V20 Subreddit.

I wouldn't be surprised if some of the modern phones actually have these types of batteries inside them.

I'm with you on pretty much everything you said! I bought 2 Perfine batteries and they're fantastic! I made a point of fully charging them in the phone first and then running them through around 4 full cycles (letting them drop to 5-10% - what would people recommend - letting it fully discharge or charge at a certain percentage?) before I started to switch between them and use the external charger. I was so impressed that I've bought 4 MORE! I plan to keep 2 or 3 of those in reserve as no doubt, they'll become hard to find later on.
 
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C D

Senior Member
...fully charging them in the phone first and then running them through around 4 full cycles (letting them drop to 5-10% - what would people recommend - letting it fully discharge or charge at a certain percentage?)...
Generally, they say you should run down the battery until the phone automatically shuts off (on LG stock it happens the moment 2% goes to 1%), then keep it charged for a couple more hours after reaching 100%, and do this cycle 3 or 4 times overall.
I have attached pics of the instruction sheets from my two separate MaxxxJuice battery purchases (colored sheet is old one, black & white is revised one and has more writing on the back, shown in the second photo).
Higher quality pics from my old Subreddit thread here:
https://postimg.cc/wtC5w6Zm
https://postimg.cc/vxzW85Br
 

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masondoctorjt

Senior Member
Apr 18, 2010
1,222
274
LG V60 ThinQ
I've been reading some great things about LG V20 batteries such as the "Perfine 4100mAh" and the "SHENMZ 4200mAh" mainly, not only because of the great battery improvement, but because it seems you don't have to sacrifice the original battery cover since the batteries might just fit without getting an extended battery cover. On the other hand, they seem to be Lithium Polymer batteries. I have the bad habit of leaving my LG V20 charging overnight as I always lose a good 8% battery life during the night if I don't. I've never had a problem with the OEM battery in term of overheating or anything of that sort when leaving it charging.

Does anybody who has a Lithium Polymer battery on their LG V20 leave their phones charging overnight? I've heard it's a no-no with Lithium Polymer batteries, but they're definitely the future in terms of giving new life to the LG V20. I just want to know what to look for as it's not necessary and smart I'm sure to leave the phone charging for too long; however, that's what some people do.

Are those batteries a great improvement over a regular Lithium-Ion battery based on experience?
I leave mine charge overnight in my phone. It is always cool to the touch in the morning.

Sent from my [device_name] using XDA-Developers Legacy app
 
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Merazomo

Senior Member
Aug 14, 2014
212
61
I leave mine charge overnight in my phone. It is always cool to the touch in the morning.

Sent from my [device_name] using XDA-Developers Legacy app
Good. It seems there should be no difference between the 2 battery types in terms of danger if I ever forget to unplug it at night. I ordered 2 maxxxjuice batteries yesterday. Hopefully I won't have to charge as often as I do now.

Sent from my LG-H910 using Tapatalk
 

Merazomo

Senior Member
Aug 14, 2014
212
61
After about a week of charging and discharging, setting and resetting AccuBattery Pro, I can see that at least for now the MaxxxJuice battery is the real deal. It is a tight fit and a marginal gap is felt around the fingerprint reader, I don't know how much better or worst it is compared to the "Perfine 4100mAh" and the "SHENMZ 4200mAh" batteries; however, it doesn't get in the way of the fingerprint reader function which was one of my main concerns. I'm very picky about those types of imperfections compared to the original design; however, the little gap is almost nonexistent as everything else is pretty much a stock fit.

As of 8/29/19, this battery still seems to be good. I don't know what the shelf life situation is like with that company, but as of 8/29/19 there is still life left for the LG V20.
 

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kaluna00

Senior Member
Mar 24, 2011
645
155
Tacoma
Generally, they say you should run down the battery until the phone automatically shuts off (on LG stock it happens the moment 2% goes to 1%), then keep it charged for a couple more hours after reaching 100%, and do this cycle 3 or 4 times overall.
I have attached pics of the instruction sheets from my two separate MaxxxJuice battery purchases (colored sheet is old one, black & white is revised one and has more writing on the back, shown in the second photo).
Higher quality pics from my old Subreddit thread here:
https://postimg.cc/wtC5w6Zm
https://postimg.cc/vxzW85Br

been using the SHENMZ 4200mAh for 6 months or so. I charge it over night. normally I use 'battery charge limiter' app to stop charging @ 85%. but not always.
been working very well. kept my stock battery for a back up.
 
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masondoctorjt

Senior Member
Apr 18, 2010
1,222
274
LG V60 ThinQ
been using the SHENMZ 4200mAh for 6 months or so. I charge it over night. normally I use 'battery charge limiter' app to stop charging @ 85%. but not always.
been working very well. kept my stock battery for a back up.
I am using this same battery for almost a year. I usually can't kill it in a day, which I definitely could the stock batteries, but I still charge it all night almost every night, and it seems about as good as it was when I got it. I usually end the day at about 30 to 50% at 9:30 it 10pm.

Sent from my [device_name] using XDA-Developers Legacy app
 

ssnova

Senior Member
Mar 25, 2013
132
33
I'm also looking for a new battery in 2021. I didn't want to start a new thread since there seems to be quite a few out there. It's just my hypothesis, but seems like either the V20's hardware circuitry was inefficiently designed and has a leak and/or there is some proprietary things running in the background be it on the stock rom or in the firmware (telemetry is often there).

Whatever it is, I noticed that the V20 seems to drain even when powered off or on airplane mode, abnormally faster than other devices. I am running on the stock rom.

Lithium Ion and Lithium Polymer batteries usually have protection circuitry built in, but sometimes it's hard to trust that built in protection, especially from non-accredited 3rd party batteries.

Also, LG Chem used to be an amazing battery manufacturer (they still are in many regards, as long as they made it), but all the "OEM" LG batteries I see(including the ones mine came with) are made in China (LG is South Korean)... so I'm not sure if LG contracted(which they have done in the past) the batteries for the V20, or the factory in China is just not up to par with QC(Nothing wrong with the Chinese factory, just saying since it's not the original plant in Korea, things just aren't as set up as the original, etc.).

Any how, anyone have good success with an aftermarket battery? I looked at Shenmz's 4400mah(around there) battery and see lots of mixed reviews. But it would be great to hear from someone on here who might have some long term experience with the product... most product reviews are from people who only used it for a few weeks.
 
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Mysticblaze347

Senior Member
Jun 12, 2018
507
181
I'm also looking for a new battery in 2021. I didn't want to start a new thread since there seems to be quite a few out there. It's just my hypothesis, but seems like either the V20's hardware circuitry was inefficiently designed and has a leak and/or there is some proprietary things running in the background be it on the stock rom or in the firmware (telemetry is often there).

Whatever it is, I noticed that the V20 seems to drain even when powered off or on airplane mode, abnormally faster than other devices. I am running on the stock rom.

Lithium Ion and Lithium Polymer batteries usually have protection circuitry built in, but sometimes it's hard to trust that built in protection, especially from non-accredited 3rd party batteries.

Also, LG Chem used to be an amazing battery manufacturer (they still are in many regards, as long as they made it), but all the "OEM" LG batteries I see(including the ones mine came with) are made in China (LG is South Korean)... so I'm not sure if LG contracted(which they have done in the past) the batteries for the V20, or the factory in China is just not up to par with QC(Nothing wrong with the Chinese factory, just saying since it's not the original plant in Korea, things just aren't as set up as the original, etc.).

Any how, anyone have good success with an aftermarket battery? I looked at Shenmz's 4400mah(around there) battery and see lots of mixed reviews. But it would be great to hear from someone on here who might have some long term experience with the product... most product reviews are from people who only used it for a few weeks.
Shenmz is pretty much the best/ most trusted 3rd party battery you can get. The 5380's on ebay are ultra fake, 2300 is what they really are. I have a few Shenmz 4380's and they are legit.
 
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    I've been reading some great things about LG V20 batteries such as the "Perfine 4100mAh" and the "SHENMZ 4200mAh" mainly, not only because of the great battery improvement, but because it seems you don't have to sacrifice the original battery cover since the batteries might just fit without getting an extended battery cover. On the other hand, they seem to be Lithium Polymer batteries. I have the bad habit of leaving my LG V20 charging overnight as I always lose a good 8% battery life during the night if I don't. I've never had a problem with the OEM battery in terms of overheating or anything of that sort when leaving it charging.

    Does anybody who has a Lithium Polymer battery on their LG V20 leave their phones charging overnight? I've heard it's a no-no with Lithium Polymer batteries, but they're definitely the future in terms of giving new life to the LG V20. I just want to know what to look for as it's not necessary and smart I'm sure to leave the phone charging for too long; however, that's what some people do.

    Are those batteries a great improvement over a regular Lithium-Ion battery based on experience?
    2
    I have been using these batteries since last December, and when it comes to charging and heat, I haven't noticed anything that's different from the OEM batteries.
    While I don't remember ever charging my phone overnight (my battery level doesn't get low until past the middle of the second day, and I mostly just swap batteries), I have charged the battery in the OEM external charger overnight several times before (you could do it outdoors first if you're scared), and it acted just like any other battery in there: the light turns green when charging is complete, and the heat stops.

    As for how much better than the OEM batteries they are in terms of battery life, it's a significant step up. Plenty of people (including myself) have reported their findings on the V20 Subreddit.

    I wouldn't be surprised if some of the modern phones actually have these types of batteries inside them.
    2
    I see, seems like ebay may be more consistent or reputable on picking up a legitimate Shenmz battery. It's strange on Amazon, they have the Shenmz brand, however they claim to be of varying mah capacities... none of them being 4380 mah, slightly deviating from it( a bit more, a bit less, etc.) yet still have the Shenmz branding on them... there's also " LCLEBM " brand on there as well, and they claim the standard 4380 mah's... many speculate that most of these batteries probably come from the same factory but just have a different sticker on them... who knows?
    I think the ebay legit sellers name is aexpower... https://www.ebay.com/itm/for-LG-V20...p2349624.m46890.l6249&mkrid=711-127632-2357-0
    2
    Thanks for the feedback. Out of Curiosity, where did you purchase your Shenmz from? Ebay as well?
    Just to clarify the 5380 are other brands. Don't get those
    1
    Do these fit with the standard back panel?
    Yeah...they r original slim size