Develop Bugs

[Q] Li-poly Batteries Questions

Hey everyone,
I received my Xperia Arc S 3 days ago. Well, since it's my first smartphone and I was not used to it I first used all the battery and then I gave it 12hours of charging.
Well it seems I did it wrong since Li-Poly batteries shouldn't be charged on that way. So, here are my questions.
1. The fact of letting my phone completely discharge and then give it 12 hours charge was a BIG MISTAKE?
2. How can I correctly charge my device?
Thank you all.

Why it should be a big mistake?
I've done the same:
buying
completely discharged
charged for many hours
I haven't any battery drain or something and I also heard you should do that (correct me if I'm wrong).

Hey pal,
Well I thought it would be the right procedure as well but it seems that with Li-Poly batteries we shouldn't let them completely discharge as it may affect its life. However, I am not sure and I still don't know if it's the truth! Let's wait for some more feedback and see what's coming.
Plus, how long does your battery stand?
Note: In addition, thank you for your response

These new batteries need no charging circles etc
You're good to go
Sent from my LT15i using XDA Premium App

Flo95 said:
These new batteries need no charging circles etc
You're good to go
Sent from my LT15i using XDA Premium App
Click to expand...
Click to collapse
Excuse me Flo95,
Did you mean charging cicles? What do you mean by good to go? That I don't have to let it discharge and I may charge it whenever I want?

Pedro Pinto said:
Excuse me Flo95,
Did you mean charging cicles? What do you mean by good to go? That I don't have to let it discharge and I may charge it whenever I want?
Click to expand...
Click to collapse
If I'm correct previous batteries had 5% circles and current batteries have about 20% (as a full charge).
He means that everything is okay and you won't have any problems.

dp94 said:
If I'm correct previous batteries had 5% circles and current batteries have about 20% (as a full charge).
He means that everything is okay and you won't have any problems.
Click to expand...
Click to collapse
Ok buddy,
Thank you for that!
Well, plus, can I remove the device after 3 / 4 hours (as long as it says 100%) of charging and normally use it with only that time of charging? What about the opposite? Let it charge all night long while I sleep? No problem with both methods?

Pedro Pinto said:
Ok buddy,
Thank you for that!
Well, plus, can I remove the device after 3 / 4 hours (as long as it says 100%) of charging and normally use it with only that time of charging? What about the opposite? Let it charge all night long while I sleep? No problem with both methods?
Click to expand...
Click to collapse
No problem with both.
Usually I'm charging over night too.
But if I remember right a complete charge only needs about 2 hours.

dp94 said:
No problem with both.
Usually I'm charging over night too.
But if I remember right a complete charge only needs about 2 hours.
Click to expand...
Click to collapse
Well, my one is charging for 2 hours now and it says its battery is 88% charged!
I have to leave in 1:30 hours and I guess It'll be fully charged then. Hopefully I won't have to charge it again during the night

You can plug it in as long as you want, nothing will happen exept the battery gets charged.
Sometimes I plug it in 5 mins before going out and my battery is ok.
Sent from my LT15i using XDA Premium App

---*Bump Charge your Android Phone to Double Battery Life*---

MOD EDIT: Removed at the request of AndroidAdvices.com
Source ::
http://androidadvices.com/bump-char...mpaign=Feed:+AndroidAdvices+(Android+Advices)
Sent from my GT-S5360 using xda premium
***DON'T DO DRUGS***

?????? Believe it or not ??????
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Lmao thats like a whole day of charging.

raolemo said:
Lmao thats like a whole day of charging.
Click to expand...
Click to collapse
Hahaha ....
Funny..
Why not hole night ....????
Sent from my GT-S5360 using xda premium

Its like you are calibrating your battery again and again... I hav evn seen a thread a same like this for my psp years ago and it worked on it... Still to test on my phone
Sent from my GT-S5360 using XDA

I can't find any logical reason to explain how this method will work. I'm a chemist student, and I know the technology which used in our battery. as far as I know, charge our battery longer than its full time will decrease our battery life.
btw, it may sounds silly. after some years, we'll found that our battery power decreased. it will drain quicker than usual. if this happen, we may wrap our battery into a plastic bag then put it into freezer for 3-7 days.

I don't think bump charging is such a good idea. Bump charging kills your battery over time. I'll link an article later about it, soon as I find it.
Tapatalked.

kurotsugi said:
...as far as I know, charge our battery longer than its full time will decrease our battery life. ...
Click to expand...
Click to collapse
Silvane said:
I don't think bump charging is such a good idea. Bump charging kills your battery over time. I'll link an article later about it, soon as I find it.
.
Click to expand...
Click to collapse
+1
charge more than necessary is a bad idea. if you have good phone, they have overcharge protection circuit that cut charge current. so charge over 100% only waste your time and electric bill. if you have bad phone, that make your battery overcharge, and that's very2 bad. bump charge maybe can fooling protection circuit, but that's make your battery overcharge.
here is my tips, it will double your battery capacities.
- charge your battery until 100%
- unplug your charger, turn off phone if still on
- go to your local store, and buy new battery
- swap your battery and charge your new battery
ok, that's a joke. but it's a good idea if you far from electric for few days. and if you use your phone for years, buy extra battery after 6 month to 1 year after your phone release is a good idea (if you have extra money of course) because it's cheaper (a lot of supply in market).

Here's the article. http://byrong.com/PowerTesting/
It's pretty long so I'll post the important points here.
Interestingly enough, improvements in battery management technology have compounded the average user’s perception of this problem. Older phones were rather inelegant in their charging behavior; usually filling the battery to capacity and then switching to a trickle current to maintain the highest charge possible. This offered the highest usage time in the short-term, but was damaging the battery over the course of ownership. As explained at Battery University, “The time at which the battery stays at [maximum charge] should be as short as possible. Prolonged high voltage promotes corrosion, especially at elevated temperatures.”[1]
This is why many new phones will “lose” up to 10% within a few minutes of coming off the charger. The reality is that the battery was only at 100% capacity for a brief moment, after which the battery management system allowed it to slowly dip down to around 90%. Leaving the phone plugged in overnight does not make a difference: the phone only uses the wall current to maintain a partial charge state.
Click to expand...
Click to collapse
Bump It. Or Should You?
One technique that has gained popularity in the user community is "bump charging." To bump charge a device, turn it off completely, and plug it into a charger. Wait until the indicator light shows a full charge (on the ADR6300, for example, the charging LED changes from amber to green) but do not yet turn the device back on. Instead, disconnect and immediately reconnect the power cord. The device will now accept more charge before saying it is full. This disconnect/reconnect process can be repeated multiple times, each time squeezing just a little bit more into the battery. Does it work?
Click to expand...
Click to collapse
The answer, of course, is that bump charging definitely works.
So what does it all mean?
If you absolutely need the highest capacity on a device like this, you will need to bump charge. There are currently people experimenting with "fixes" for this, but I have yet to see one that works. Be warned, however, that repeated bump charging will wear your battery faster and begin to reduce its capacity. If you are a "power user" who will buy a new battery a few months from now anyway, this presumably isn't a concern. If you are an average consumer who uses a device for a few years, I would recommend that you stay away from bump charging. The bottom line is that you don't really "need" to do it unless you are actually depleting your battery to 0% on a regular basis.
If you are someone who can top off your phone on a regular basis, do it. Plug it in when you're at home. Plug it in when you're at your desk. As explained by Battery University, "Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory."[2]
Beyond that, the best advice I can offer is to stop paying such close attention to your battery gauge and to just use your phone. Charge it whenever you can, and then stop obsessing over the exact numbers. If you really need more usage time, buy an extended-capacity battery and use it normally.
Click to expand...
Click to collapse
Still pretty long, but worth reading.

I don't believe it:''(
Hehehe..:-[:-[:-[
Sent from my GT-S5360 using xda premium

irfanbagus said:
+1
charge more than necessary is a bad idea. if you have good phone, they have overcharge protection circuit that cut charge current. so charge over 100% only waste your time and electric bill. if you have bad phone, that make your battery overcharge, and that's very2 bad. bump charge maybe can fooling protection circuit, but that's make your battery overcharge.
here is my tips, it will double your battery capacities.
- charge your battery until 100%
- unplug your charger, turn off phone if still on
- go to your local store, and buy new battery
- swap your battery and charge your new battery
ok, that's a joke. but it's a good idea if you far from electric for few days. and if you use your phone for years, buy extra battery after 6 month to 1 year after your phone release is a good idea (if you have extra money of course) because it's cheaper (a lot of supply in market).
Click to expand...
Click to collapse
+1 its all just wast our time and decrease the battery life. i think use a tweak script is enough

reyvababtista said:
+1 its all just wast our time and decrease the battery life. i think use a tweak script is enough
Click to expand...
Click to collapse
Agree with u :-\:-\

Ive read through XDA that bump charging increases your battery life but reduces the battery's life span

Welcome back stamatis. Yes, if you read my post in the first page it explains how.
Tapatalked.

[Q] How to properly charge Galaxy Note 2?

How to properly charge Galaxy Note 2?
Do you let it charge overnight no matter what the battery percentage is? Do you let it go down to 40%-50% and then charge it? Maybe 10%-15% and then charge it? Can you somehow damage the battery if you leave it on the charger longer than you should to?
Thanks in advance guys!

BoBBBBBBBO said:
How to properly charge Galaxy Note 2?
Do you let it charge overnight no matter what the battery percentage is? Do you let it go down to 40%-50% and then charge it? Maybe 10%-15% and then charge it? Can you somehow damage the battery if you leave it on the charger longer than you should to?
Thanks in advance guys!
Click to expand...
Click to collapse
When the phone alerts you to charge .. thats the right time.. and dont charge it overnight the battery will be damaged!!! Im only charging my phone when it hit less than 20%..
Sent from Godfather Gt-N7100
A TRIANGLE AWAY will make your WARRANTY stay
Hit thanks if you love your phone =)

gabamoner said:
and dont charge it overnight the battery will be damaged!!!
Click to expand...
Click to collapse
Is this really true?

Laynee1 said:
Is this really true?
Click to expand...
Click to collapse
I keep reading it, but they never provide any proof or explanation why. Im prettt sure the phone is smart enough to turn off the charging when it hits full.
Tons of battery bs gets spewed like gospel.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html

BoBBBBBBBO said:
How to properly charge Galaxy Note 2?
Do you let it charge overnight no matter what the battery percentage is? Do you let it go down to 40%-50% and then charge it? Maybe 10%-15% and then charge it? Can you somehow damage the battery if you leave it on the charger longer than you should to?
Thanks in advance guys!
Click to expand...
Click to collapse
Google is your friend here. As a rule you should try to keep your device between 25% and 70% charge to get a long life out of the battery.
Sent from my GT-P6800 using Tapatalk 2

Thanks all! And how long should I charge it?

I've always charged all my phones overnight regardless of percentage and never noticed any change of decrease in battery performance.
And no the battery will not be damaged from charging overnight
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kylec said:
I've always charged all my phones overnight regardless of percentage and never noticed any change of decrease in battery performance.
And no the battery will not be damaged from charging overnight
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Same here. I think is a myth that batteries get damaged if charging overnight, at least these days that smartphones is actually "smart" and stops the charging automatically when the battery is full.

kylec said:
I've always charged all my phones overnight regardless of percentage and never noticed any change of decrease in battery performance.
And no the battery will not be damaged from charging overnight
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
I've always charged my iPhone 4 overnight and it had the best battery, never damaged.

How to charge:
Plug in phone whenever you want.
Charge multiple times at whatever power levels.
Unplug whenever you want.
Enjoy life.
My batteries last a year using my patented "I don't give a F" method, so it's not worth stressing over "OMG I AM CHARGING ABOVE/BELOW X PERCENTAGE!!!!!111ONEONE" Replacement batteries are cheap and easy to come by, a year is a reasonable lifespan and not stressing over it is priceless.
However, if you feel the need to freak right the heck out over your battery, just do it over there in the corner where I can't see/hear you.

BoBBBBBBBO said:
Thanks all! And how long should I charge it?
Click to expand...
Click to collapse
kylec said:
I've always charged all my phones overnight regardless of percentage and never noticed any change of decrease in battery performance.
And no the battery will not be damaged from charging overnight
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
This advice is for battery lifetime, not battery performance. Quote from wikipedia:
A Standard (Cobalt) Li-ion cell that is full most of the time at 25 °C (77 °F) irreversibly loses approximately 20% capacity per year.[citation needed] Poor ventilation may increase temperatures, further shortening battery life. Loss rates vary by temperature: 6% loss at 0 °C (32 °F), 20% at 25 °C (77 °F), and 35% at 40 °C (104 °F).
When stored at 40%–60% charge level, the capacity loss is reduced to 2%, 4%, and 15%, respectively.[citation needed] In contrast, the calendar life of LiFePO4 cells is not affected by being kept at a high state of charge.[47]
Click to expand...
Click to collapse

norsepriest said:
This advice is for battery lifetime, not battery performance. Quote from wikipedia:
Click to expand...
Click to collapse
Well it wouldn't exactly be full most of the time now would it
I won't deny that the maintaining a charge between 40-60% may prolong battery lifetime but the benefit of having A full battery at the beginning of everyday easily outweighs the "potential" loss of 20% battery capacity after a year. Also the hassle of maintaining a battery percentage between those limits is simply not worth it.
A new battery goes for as little as $6 here in Australia. IF there is any noticeable decrease in battery life (eg. From a loss of max capacity) then a new battery is cost basically nothing.
I charge all my devices over night if the percentage is lower than 85% and all of them still last just as long as the day I got them.
Sent from my GT-N7100 using xda premium

How to charge: plug charger into wall, attach to phone. Done.
Sent from my GT-N7100 using xda app-developers app

sleebus.jones said:
How to charge:
Plug in phone whenever you want.
Charge multiple times at whatever power levels.
Unplug whenever you want.
Enjoy life.
My batteries last a year using my patented "I don't give a F" method, so it's not worth stressing over "OMG I AM CHARGING ABOVE/BELOW X PERCENTAGE!!!!!111ONEONE" Replacement batteries are cheap and easy to come by, a year is a reasonable lifespan and not stressing over it is priceless.
However, if you feel the need to freak right the heck out over your battery, just do it over there in the corner where I can't see/hear you.
Click to expand...
Click to collapse
Exactly.
I mean seriously, why on earth people think too much about charging, when to charge and all, if my battery will be damaged or not, this isn't a phone of 1995! And there is no harm done if you charge overnight.
I've used all my phones like this and never had a problem with battery, not the slightest, however I don't use any phone for more than 18 months.
Swyped from my GT-N7100

But I'm many devices the battery is not removable...
Sent from my GT-P6800 using Tapatalk 2

If overcharging does not destroy your battery and its only a myth.. then why is it included in the USER MANUAL??
For now you will never notice it.. but as time goes by you will feel a slight change in battery usage..but by that time I think you have a new phone.. so dont worry about it..
Sent from Godfather Gt-N7100
A TRIANGLE AWAY will make your WARRANTY stay
Hit thanks if you love your phone =)

gabamoner said:
If overcharging does not destroy your battery and its only a myth.. then why is it included in the USER MANUAL??
For now you will never notice it.. but as time goes by you will feel a slight change in battery usage..but by that time I think you have a new phone.. so dont worry about it..
Sent from Godfather Gt-N7100
A TRIANGLE AWAY will make your WARRANTY stay
Hit thanks if you love your phone =)
Click to expand...
Click to collapse
Lol but it also says in most manuals that you should charge for 6 -8 hours prior to using the device even though it's unnecessary.
I think its only really there to cover themselves for as many situations as possible
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---------- Post added at 07:54 PM ---------- Previous post was at 07:44 PM ----------
norsepriest said:
But I'm many devices the battery is not removable...
Sent from my GT-P6800 using Tapatalk 2
Click to expand...
Click to collapse
Same thing. By the time there is any noticeable impact on the battery most users will have a new phone.
My X10 is about 3 years old now and used by my brother. I charged it every night (sometimes even during the day as well) regardless of percentage and to this day the screen time and overall time are still almost the same as the first day. Definitely no more than a 10% decrease
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rub feet on carpet while holding phone for 3-4hrs.

I've never noticed a difference in by charging over night. I've noticed a difference when using different chargers though.

Phone beeps I plug it in, when it shows charged I unplug, not exactly difficult

Best way to charge phone

Hello I was wondering what is the optimal way to charge the s3? With wall charger or in comp? Should I let it plugued more after it says "Charged(100%)"?
I have a Zerolemon 7100mAh
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I just picked up a Zero Lemon 2300 and still trying to figure out best way. The instructions they give you just dont make sense to me

They make it looks kinda simple but how can we be sure the battery is really fully charged or decharged etc..
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DarkFranX said:
They make it looks kinda simple but how can we be sure the battery is really fully charged or decharged etc..
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
Exactly. Plus every time I read someones post on how they did it its always different.
My first battery charge I did what they said. Charged for 12 hours with phone off. Ran it down to 1% and then recharged. Left it on charger for about half hour-hour past full charge. Did the 5 recharge cycles.
Think second battery I may install and run down to 1% before fully charging. My batteries came in with about 56% charge. I dont see why they would need to be charged for 12 hours like that

DarkFranX said:
Hello I was wondering what is the optimal way to charge the s3? With wall charger or in comp? Should I let it plugued more after it says "Charged(100%)"?
I have a Zerolemon 7100mAh
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
fastest should always be wall charger since it has higher current than your usb port in your computer will output, especially if you don't have fast charge enabled (root and rom support required for fast charge).
TL;DR use a wall charger
slap that thanks button if I have helped

aeppacher said:
fastest should always be wall charger since it has higher current than your usb port in your computer will output, especially if you don't have fast charge enabled (root and rom support required for fast charge).
TL;DR use a wall charger
slap that thanks button if I have helped
Click to expand...
Click to collapse
Yeah wall charger charges up the battery faster than in the computer. But I don't mind the time it takes.. The question is which method is better for the battery? Plus I don't use fast charge since opinion on its risk varie a lot.
jasvncnt1 said:
Exactly. Plus every time I read someones post on how they did it its always different.
My first battery charge I did what they said. Charged for 12 hours with phone off. Ran it down to 1% and then recharged. Left it on charger for about half hour-hour past full charge. Did the 5 recharge cycles.
Think second battery I may install and run down to 1% before fully charging. My batteries came in with about 56% charge. I dont see why they would need to be charged for 12 hours like that
Click to expand...
Click to collapse
Same thing here.. But i think we should have used it all to 1% BEFORE the first charge.. Doesnt it make more sense?
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DarkFranX said:
Yeah wall charger charges up the battery faster than in the computer. But I don't mind the time it takes.. The question is which method is better for the battery? Plus I don't use fast charge since opinion on its risk varie a lot.
Same thing here.. But i think we should have used it all to 1% BEFORE the first charge.. Doesnt it make more sense?
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Click to expand...
Click to collapse
That makes sense to me. I posted on their Facebook page asking for clarification on charging steps. And asked about draining it first before first charge
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DarkFranX said:
Yeah wall charger charges up the battery faster than in the computer. But I don't mind the time it takes.. The question is which method is better for the battery? Plus I don't use fast charge since opinion on its risk varie a lot.
Click to expand...
Click to collapse
Chemically speaking, the speed variation of the reaction shouldn't matter on health. The process is pretty much reversible which is why you can recharge it after draining. The only reason batteries die is because this process isn't perfect, and sometimes chemical pollutants form. In this case the current and time variation shouldn't provide a better battery health either way. For best battery health simply drain the whole way down before charging it. Charging it when its not completely empty tends to make it die faster. (Chem major here)
Slap that thanks button if I have helped!

DarkFranX said:
Yeah wall charger charges up the battery faster than in the computer. But I don't mind the time it takes.. The question is which method is better for the battery? Plus I don't use fast charge since opinion on its risk varie a lot.
Same thing here.. But i think we should have used it all to 1% BEFORE the first charge.. Doesnt it make more sense?
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Click to expand...
Click to collapse
OK here's the reply I got
Rami Mubasher
For best results we ask that customers let the items die down to 1-4% before your first charge. Leave the battery charging for 12 hours if you are able to. Then repeat this cycling 4-5 times. This will yield the best results the quickest. Hope this helps.
Like*·*58 minutes ago
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jasvncnt1 said:
OK here's the reply I got
Rami Mubasher
For best results we ask that customers let the items die down to 1-4% before your first charge. Leave the battery charging for 12 hours if you are able to. Then repeat this cycling 4-5 times. This will yield the best results the quickest. Hope this helps.
Like*·*58 minutes ago
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Alright thanks for this clarification! Then the best would be to always do full discharge/charge cycle?
aeppacher said:
Chemically speaking, the speed variation of the reaction shouldn't matter on health. The process is pretty much reversible which is why you can recharge it after draining. The only reason batteries die is because this process isn't perfect, and sometimes chemical pollutants form. In this case the current and time variation shouldn't provide a better battery health either way. For best battery health simply drain the whole way down before charging it. Charging it when its not completely empty tends to make it die faster. (Chem major here)
Slap that thanks button if I have helped!
Click to expand...
Click to collapse
Great answer! And what about letting the phone plugued in at 100%? Like a whole night? I've heard so much things, some says "it's better to always charge it a little when you can because it is bad if it reaches 0%". I know it's a chemical reaction and I know the internal resistor gets altered over time providing less efficient charge/decharge. When the phone closes it is because not enough power comes out of the battery, but the reaction is still there and by pluguing it we revive it.. right? That would make sense to me. That would mean that there isn't a charging habit killing the battery life more than another?

DarkFranX said:
Alright thanks for this clarification! Then the best would be to always do full discharge/charge cycle?
Great answer! And what about letting the phone plugued in at 100%? Like a whole night? I've heard so much things, some says "it's better to always charge it a little when you can because it is bad if it reaches 0%". I know it's a chemical reaction and I know the internal resistor gets altered over time providing less efficient charge/decharge. When the phone closes it is because not enough power comes out of the battery, but the reaction is still there and by pluguing it we revive it.. right? That would make sense to me. That would mean that there isn't a charging habit killing the battery life more than another?
Click to expand...
Click to collapse
I generally like to unplug when full. The reason being, when it gets to 100% it discharges to 99% and the back to 100% it charges. Now in all reality you won't notice any of this battery dying with current gen li-ion batteries unless you keep a battery for like 2 years of use. But then you can always replace it. Bottom line is its not really worth worrying about. I don't know why people say letting it go to 0% is bad. The less repetitive charging, the better, this means letting it go from 100 to 0 as often as possible.
TL;DR it doesn't matter, your battery will outlive your new phone cycle

Thanks a lot for those clear answers!
Sent from my SGH-I747 using xda premium

Is charging the battery constantly bad?

Hey everyone.
Just wanted to know if charging the tablet almost constantly is a bad thing. I use the tablet a lot every day, so when I'm at 60%, for example, I charge it again while I'm at lunch or doing something else, so that I can keep using the tablet later with full charge available again. I never let my tablet go down to 5%.
Is this bad for the battery in the long run?
Thanks.

Generally, it's best to not allow full cycle recharging...i.e. not fully charge or discharge, it's better for small charge cycles, like 40%<->90%
Some links to help garner some understanding:
http://forum.xda-developers.com/showthread.php?t=2469261
Which provides these links:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://www.eetasia.com/STATIC/PDF/200806/EEOL_2008JUN16_POW_TA_01.pdf
http://macomp.ru/wp-content/uploads/2012/04/1607542.pdf

mdamaged said:
Generally, it's best to not allow full cycle recharging...i.e. not fully charge or discharge, it's better for small charge cycles, like 40%<->90%
Some links to help garner some understanding:
http://forum.xda-developers.com/showthread.php?t=2469261
Which provides these links:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://www.eetasia.com/STATIC/PDF/200806/EEOL_2008JUN16_POW_TA_01.pdf
http://macomp.ru/wp-content/uploads/2012/04/1607542.pdf
Click to expand...
Click to collapse
That's right. At least for what I know. It says the same on Apple's website about batteries. :good:

So then I guess I'm doing it right, correct?
I charge from 60% to 100% or from 50% to 100% again. Maybe I should do it only up to 90% then.

Sensamic said:
So then I guess I'm doing it right, correct?
I charge from 60% to 100% or from 50% to 100% again. Maybe I should do it only up to 90% then.
Click to expand...
Click to collapse
I only charge to 100% when I am going to be away from a charger for a long time, otherwise I stop at 90%-ish (my battery app announces when it is at 90% and there are kernels which will stop the charge at what you specify), as the links above state, charging to 100% all the time will shorten the lifetime of your battery, this may or may not matter to someone, for example, if you buy a new tablet every year, or you're well-off financially, then you're probably not too concerned with how many years your battery lasts, in which case charging to 100% a lot won't really matter much, since you'll likely own a newer tablet by time the battery does die.
In short, it's up to you and what you want to get out of your battery's lifetime.

I am using the good old 100% and then use until near 0%. I have found that this way the battery lasts longer.
As I am writing i have 43% battery with 5:40h screen time. I am using Greenify btw.

mulperi said:
I am using the good old 100% and then use until near 0%. I have found that this way the battery lasts longer.
As I am writing i have 43% battery with 5:40h screen time. I am using Greenify btw.
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There are two kinds of battery life. These recommendations are for battery longevity. How long until the battery begins to lose the ability to fully charge.
The article at battery university explains how charging works, and the best way to charge batteries. What you are doing is the opposite of that way. If you think you are going to have your tablet longer than a year, it's worth taking the time to read the articles linked.
There is noting particularly wrong with full charges every time, but there are 'righter' ways to charge.
Sent from my Nexus 7 using XDA Premium 4 mobile app

Is there any kind of battery forming on new nexus7?
I mean i bought nexus 7 and straight from box i rooted,unlocked and installed custom kernel which forbids battery 2 fully charge over 92%...
Should i revert to stock and firstly fully charge my tablet then go to custom kernel or i am good at it right now ? Tnx
ps. (my nexus 7 was on 38% when i put it out of box)

aigaming said:
Is there any kind of battery forming on new nexus7?
I mean i bought nexus 7 and straight from box i rooted,unlocked and installed custom kernel which forbids battery 2 fully charge over 92%...
Should i revery to stock and firstly fully charge my tablet then go to custom kernel or i am good at it right now ? Tnx
ps. (my nexus 7 was on 38% when i put it out of box)
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Based on what I've read, you'd gain no benefit by reverting to stock and charging to 100%, it MAY or may not effect the internal battery calibration, but it does not affect the lifetime or anything.
Also, these kernels usually have a way for you to change the % at which it stops, usually by cat'ing or changing some value that the kernel reads, you could just cat/echo/change 92% to 100%, and let it charge to 100%, then change it back. YMMV.

mdamaged said:
Based on what I've read, you'd gain no benefit by reverting to stock and charging to 100%, it MAY or may not effect the internal battery calibration, but it does not affect the lifetime or anything.
Also, these kernels usually have a way for you to change the % at which it stops, usually by cat'ing or changing some value that the kernel reads, you could just cat/echo/change 92% to 100%, and let it charge to 100%, then change it back. YMMV.
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Tnx m8

The worst thing you can do to lithium-ion batteries is let them discharge completely.
Not letting the lithium-ion batteries discharge more than 10% will increase the cycles by thousands we're talking going from 350 cycles to 4000.
So, ideally, you want to charge your batteries (of this type) after a 10% discharge but we all know that's impossible so the best thing you can do is to charge your tablet everytime you can. Even if it has much battery left.

I knew that allready but i didn't know that it is not good to charge battery to 100 till i came to nexus 7 forums I always charged all my devices to 100% and never had a problem with battery
Sent from my LG-P990 using Tapatalk

aigaming said:
I knew that allready but i didn't know that it is not good to charge battery to 100 till i came to nexus 7 forums I always charged all my devices to 100% and never had a problem with battery
Sent from my LG-P990 using Tapatalk
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You should charge to 100%, there is no problem with that.
On a perfect world you would want to charge everytime the battery hit 90%, this gives the best amount of charge cycles and life time.
However we all know that's not going to happen because the tablet is here to serve our needs and not the other way around so stick to charging it whenever you can.

Great Question!
First let me start off by saying to the person that started this thread that this was a really good question to ask!
Now if you are trying to get the most out of your battery then you could look into installing/flashing a custom kernel that could allow for undervolting which could in theory give your battery more life.
So you all are saying that the best thing to do is to charge up to 90% and never let it get down to less than 10%? Always start charging when the battery gets to like 40%?
One question i have for the Nexus 7 2013. Is it even possible to remove the battery for this tablet or does it void the warranty? Second has anyone purchased a spare battery (if possible) for their Nexus 7 2013? If you did could you post a link to where you got it and let us know how much you paid?...
Great question and thread!
-droidshadow

droidshadow said:
First let me start off by saying to the person that started this thread that this was a really good question to ask!
Now if you are trying to get the most out of your battery then you could look into installing/flashing a custom kernel that could allow for undervolting which could in theory give your battery more life.
So you all are saying that the best thing to do is to charge up to 90% and never let it get down to less than 10%? Always start charging when the battery gets to like 40%?
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There has been speculation in the franco thread that undervolting could actually hurt battery charge life, due to the CPU having to work harder due to having less voltage, not sure if that has any merit or not.
The reasoning behind the not charging above 90%, and not allowing full-cycle charges is outlined much better in the links I posted than I could do here, also I would be just regurgitating information that is already there for the most part.
40% is just a number I pulled out of air, the best practice is to keep the charge delta as small as possible. So, let's say we charge the device to 90%, it is better to charge it when it hits 80% than it is to wait till it hits 70%, because a smaller charge delta has occurred, so charge often, but if you want the lifetime of your battery to be maximized (lifetime as in the way ezas explained it, i.e. "(...)battery longevity. How long until the battery begins to lose the ability to fully charge"), than try to not charge it to 100%.
Also, it has to be said, heat also affects the battery longevity, that is why I also recommend not charging while a device is in its case. And not leaving it sit on a Qi charger for too long, some cause more heat than others, but heat is a battery's enemy.
droidshadow said:
One question i have for the Nexus 7 2013. Is it even possible to remove the battery for this tablet or does it void the warranty? Second has anyone purchased a spare battery (if possible) for their Nexus 7 2013? If you did could you post a link to where you got it and let us know how much you paid?...
Great question and thread!
-droidshadow
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It would no doubt void your warranty. As for battery replacements, I have not yet found one, I'm not saying there isn't one to be found, but I have yet to find it, I figure the reason is because they are not yet in demand since the tablet is relatively new and demands for replacement batteries would be too low, obviously and eventually this will change.

droidshadow said:
First let me start off by saying to the person that started this thread that this was a really good question to ask!
Now if you are trying to get the most out of your battery then you could look into installing/flashing a custom kernel that could allow for undervolting which could in theory give your battery more life.
So you all are saying that the best thing to do is to charge up to 90% and never let it get down to less than 10%? Always start charging when the battery gets to like 40%?
One question i have for the Nexus 7 2013. Is it even possible to remove the battery for this tablet or does it void the warranty? Second has anyone purchased a spare battery (if possible) for their Nexus 7 2013? If you did could you post a link to where you got it and let us know how much you paid?...
Great question and thread!
-droidshadow
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Click to collapse
What I said was that, theorically, in a perfect world, you want to charge your tablet when it starts losing charge and ideally never let it get below 90%. This is almost impossible because we use our tablet and we don't want to constantly be charging it so ideally you want to charge it whenever you can.