well the question is that my xpeira play has a extended battery but i noticed i charge it 100 percent then it goes down to 90 percent real quick but slow otherwise is there a way to fix this or is this normal
Yes it's normal if you don't charge it for about 30-45 minutes past 100%, it's better to overcharge it a little. If you're already doing this, then I'm not sure but the battery might not be at full capacity (maybe even a bad battery)
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Flattened my Xoom earlier, as I do everynow and again to full cycle the battery.
Came back to it a bit later and it had charged up to 40 odd %
Used it for a while then it suddenly said the battery was flat and switched off..
Anyone else had this, am I looking at a dead battery or should I just leave it swtiched off and on charge overnight?
Trig0r said:
Flattened my Xoom earlier, as I do everynow and again to full cycle the battery.
Came back to it a bit later and it had charged up to 40 odd %
Used it for a while then it suddenly said the battery was flat and switched off..
Anyone else had this, am I looking at a dead battery or should I just leave it swtiched off and on charge overnight?
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It shouldn't be, lithium ion batteries don't have as intense a memory problem as the old nicad batteries...maybe just wipe the batteries stats in clockwork for good measure and take it from there. Sorry I forgot to mention that this would assume you are rooted. All my Android devices have weird jumps like that, but not usually that extreme.
cool, I'll clear the battery stats and see what it says in the morning.
Clear the stats in the morning after the full night charge not before..
Sent from my mind control device
Good job I checked here before I went to sleep eh
Lithium batteries do not like to go all the way down to dead (so low the device won't even start). They wear alot if you do. There is no reason to cykle them after the first time charge as there is no memory effect on them.
I had a laptop battery partially charged installed in my laptop and did't use it for two weeks. The battery went compleatly dead and when I charged it I only got like 20% into it before it said full. I had to buy a new battery.
So don't leave your XOOM with 1% battery for a long time. If you are not gonna use it for a prolonged time charge it up to about 75% before leaving it.
SEALen is correct, Lithium batteries should not be fully discharged it significantly shortens their lifespan, there is also no memory effect, the only battery type that ever did have one is NiCad.
The best way to keep a lithium battery healthy is to charge little and often, keep it topped up.
Troute said:
SEALen is correct, Lithium batteries should not be fully discharged it significantly shortens their lifespan, there is also no memory effect, the only battery type that ever did have one is NiCad.
The best way to keep a lithium battery healthy is to charge little and often, keep it topped up.
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+ 1 to your arguments however if he is doing a calibration, i let it get to 1% before charging it again, i dont let it die i watch battery widget pro and watch the mA.. This will not fix a battery but give better indication of its lifespan
Sent from my GT-I9100 using Tapatalk
I have a 3900 mAh battery from Mugen. Ive noticed the battery lasts about 30 hours. But I find something very strange. It drains around 96% in just 15 minutes on straight boot after charging every time. In fact, the first 80% of so drains pretty quickly? Ive had it in my phone for about 2 weeks. Has anyone else noticed this or know why this may be happening. Also when at 100%, and i inplug it, goes straight to 98!
Have you done a battery calibration? Get the Battery Calibration app from the play store.
There's some argument as to whether this does anything or not, but have you conditioned the battery? That means letting it drain completely, then charging it continuously till it hits 100% - do that several times.
Its been proven that the app does nothing, which wipes battstats.ini or something
As for conditioning, its been down to around 3% before being charged. Ivehad the battery 2 weeks now.
Lithium Ion batteries have a very steep drain for about the first 15-20% and also slower charging from those levels. Once past that the drain is nearly linear, and then gets very steep at about 3.6v.
You can see it in the graphs here:
http://www.ibt-power.com/Battery_packs/Li_Ion/Lithium_ion_tech.html
Typically the way our devices are designed, they do not charge the battery to 100% full it can actually cause damage to lithium ion based batteries. what happens is the battery is charged to 95%-98% then the device stops the charge and allows the battery to drop to abut 85%-90% and then starts trickling it again. By design the batteris typically drain a little bit fast at the top level.
further more lithium ion batteries survive more recharge cycles if the D0D (depth of discharge) is about 25% remaining.
Basically you battery will last longer by the device not charging to 100% and letting it discharge slightly when in trickle mode, and if you don't let it die completely and charge it when it reaches around 15%-20% left.
-Mr. X- said:
Typically the way our devices are designed, they do not charge the battery to 100% full it can actually cause damage to lithium ion based batteries. what happens is the battery is charged to 95%-98% then the device stops the charge and allows the battery to drop to abut 85%-90% and then starts trickling it again. By design the batteris typically drain a little bit fast at the top level.
further more lithium ion batteries survive more recharge cycles if the D0D (depth of discharge) is about 25% remaining.
Basically you battery will last longer by the device not charging to 100% and letting it discharge slightly when in trickle mode, and if you don't let it die completely and charge it when it reaches around 15%-20% left.
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Hmm that kind of makes sense. Everyones been telling me to not let it drop to below 35% though cause it 'wears the battery out'. Ive been charging at around 40 cause thats where itd be after a full day at work and such.
Ive been getting concerned though because ive seen screenshots of people getting 31 hours with 7 hours of screen on time.
Im at 62%, 9.5 hours total, 1 hour 7 min screen on. Thats mostly with Wifi on though.
My stock battery used to drop 10% an hour on 4g, and this one dropped ~11% on 4g just now....
mknewman said:
Lithium Ion batteries have a very steep drain for about the first 15-20% and also slower charging from those levels. Once past that the drain is nearly linear, and then gets very steep at about 3.6v.
You can see it in the graphs here:
http://www.ibt-power.com/Battery_packs/Li_Ion/Lithium_ion_tech.html
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Thanks for the graph!
Sent from my amazing G2x running EaglesBlood and Faux.
Now at 36% And its just sitting off mostly with some light texting
Now 35!
Got a weird feeling the battery is messed up.
Its 3900mah, divide by 650 = 6 hour charge
Its been 6 hours and its at 46% with the phone off so its not using power, and on the wall charger.
Rekzer said:
Its been proven that the app does nothing
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I haven't heard that before. Got a source for that info?
mayonaise said:
I haven't heard that before. Got a source for that info?
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http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
I've been experiencing this issue for awhile now on multiple Roms after multiple charge cycle.
Battery drain is consistent and expected until around 30%. Then the battery drains to 0 in 90 minutes or less.
Anyone with similar issue or thoughts?
Do I need to replace my battery? I've been seeing this for probably 4-6 weeks.
Yeah, I have the same problem. I think it means that your battery is not calibrated properly.
It's either not calibrated properly (meaning charge it 100% and go into the boot menu->advanced->erase battery stats) to recablirate and or you have gone past the 100 charge cycles a battery phones stays optimal. Depending on use you may need it
Hi, I recently bought a Lenovo P2, and so far it seems to me to be a great device.
The battery is great and I usually go to sleep with a 65-70% of charge.
So I have a doubt: Should I charge the phone every night, even if the battery is half charged, or should I wait the battery to reach 25-30% and then charge it?
Also, Does the fast charge ruin the battery if often used?
Thanks
SlugUnchained said:
Hi, I recently bought a Lenovo P2, and so far it seems to me to be a great device.
The battery is great and I usually go to sleep with a 65-70% of charge.
So I have a doubt: Should I charge the phone every night, even if the battery is half charged, or should I wait the battery to reach 25-30% and then charge it?
Also, Does the fast charge ruin the battery if often used?
Thanks
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Wait for 25 to 30 percent and charge till 80 to 85 percent. It'll make your phone battery last really long!!!!
Why not till 100%?
Because these batteries are at their best between 20 and 80%. They don't like being run right down and charging them to 100% increases the wear on them.
So they will last longer by keeping them between 20 and 80%.
philje123 said:
Because these batteries are at their best between 20 and 80%. They don't like being run right down and charging them to 100% increases the wear on them.
So they will last longer by keeping them between 20 and 80%.
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So, those tricks I've read, about discharging till 15% and charging to 100% to calibrate battery, are useless?
Korax94 said:
So, those tricks I've read, about discharging till 15% and charging to 100% to calibrate battery, are useless?
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You read it wrong. To recalibrate the battery you must fully discharge ie. to 0% till the phone shuts down by itself, not to 15%. You can fully discharge once per month. To prolong the battery life span try to charge from 20 to 80%. I know charging up to 100% is nice, but all experts tell us that it's not good for the battery in a long run.
Even partially charging from 20 to 80% you still have ~8-10h SOT so all is fine, 2-3 days on a battery are possible.
Hey its been a few days since ive received my one plus 5t. Wanted to know what are the typical charging cycles you guys use. Do you guys charge when battery is below 5 and stop at 100? or something different.
i am aiming to use this phone for about 3+ years so would be great to know how can i maximize my usage in this duration.
jelousdogs said:
Hey its been a few days since ive received my one plus 5t. Wanted to know what are the typical charging cycles you guys use. Do you guys charge when battery is below 5 and stop at 100? or something different.
i am aiming to use this phone for about 3+ years so would be great to know how can i maximize my usage in this duration.
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you can charge your device pretty much at any time just don't let it drain to 0% (shut off condition) as that'll theoretically deteriorate the battery in the long run. I had a wrong perception that charging the phone from 0-100 and discharging back to 100-0 will make the battery last a little longer ( tried it with my moto e and moto g which eventually started giving me random shutdowns at 20-25% juice left) which is totally opposite of what you should do. With the 5t I usually put it on charge around 15 and then straight to 100 or around 70 when I'm in a rush.
I typically charge when the battery is around 20 - 30% and I have an app to stop charging when 60% is reached. According to Battery University it's best to keep between 30% to 60% but of course practicality has to come first. 60% upper limit has worked pretty well for me as I can usually charge my phone when needed.
https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002
There are two factors killing a battery: heat and voltage. A lot of heat (over 30°C) will degrade the lifespan of your battery.
High and low voltage can degrade it too. The optimal voltage would be around 4.05 V. Anything higher degrades it and anything far too low (under 3.5 V or so) can even make it non operational without a high current "boost" to make it usable again. However, lithium batteries tend to charge to 4.4 V which is good for battery life but bad for the lifespan.
In short you should not keep your phone at 100 % over a long period of time and never discharge it completely. Heat and voltage induced by fast charging is also bad (faster charging means higher voltages of a few 100 mV).
I'm using Magisk and the Magic Charging Switch module to charge it to 90 % and only charge it at 80 % again. At night I lover it to 80 % and 70 % and 45 minutes before I wake up it is charged to 100 % making the battery only use the max voltage for 1 to 2 hours instead of the whole night.
Leaving the phone plugged in wouldn't hurt it im terms of cycles etc. but the constant high voltage does hurt. More information can be found here. Really worth a read: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries