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I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.
Does it happen often that it hangs at 2%, if so wipe the stats and drain and shut off and recharge. Could just be the new battery breaking in.
aceo07 said:
I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.
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When you wipe stats you should let the battery die out then fully charge to 100. You should be happy you get so much time out of 2% though
Actually this has happened to me, it seems that once the phone enters the 5% range, it lasts just as long as everything else put together.
i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.
bdveteran18 said:
i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.
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Which is weird because using the stock battery I can get 12+ hours with moderate usage, this includes browser and wireless tethering.
I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?
aceo07 said:
I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?
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I guess wiping them at full power wont hurt, but then you must then let it fully die again and recharge it fully.
I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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How do you overcharge it? Shouldn't it stop when it think it's full?
This morning I used 'battery info' in the settings area and it only said the voltage was 4.05v or something and at 91%. This was for at least 9hrs with phone off and using HTC usb charger. I plugged it back in, while the phone was on, and it charged to 'full' in 10 minutes.
I'm recharging with phone on now tonight. I'm also currently using my motorola razr usb charger. It seems to charge faster than the HTC usb charger. It's voltage is now 4.15v and 61% now.
AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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How do you overcharge a battery? If you mean leaving it plugged in long after it's fully charged, that is such a common thing to do it seems like lots of people would have battery problems. Almost everyone I know plugs their phone in before bed, and unplugs it in the morning. Most phones are fully charged in under 4 hours, so that leaves roughly 4-5 hours of being plugged while already fully charged every single day.
Well I'm basing that claim off of a t-mobile rep (hahah reliable isnt it?) who told me that overcharging the battery, or keeping it plugged for the majority of the day (which is what i tended to do) could harm the battery, causing it to give off false percentages or making it unable to hold a charge.
And also, from personal experience, my battery did begin to bulge outwards, and would not hold a charge for more than 4 hours. So I just assumed it was because I had a tendency to plug my g1 in when it wasn't necessary, and keep it charging. So perhaps my previous claim wasn't so well supported. I just based it off of my experience and what the reps told me.
aceo07 said:
I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.
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lol haha that sucks
since i download a font pack, keyboard skin and better keyboard once my battery hits 10% it usually dies within 5-7 minutes if i have swift running in the background
but before the most recent updates my battery would last about a hour or more with just swift updating in the background and the music player on pause
I want to make the most out of my galaxy tablet 10.1 battery life, i was wondering what would be the best care for it. Each 1% for me lasts about 4 and half minutes on 40% brightness, wifi on, gps off, and auto rotation off. I heard the g.tab gets close to 9 hours of battery life, but I estimate mine about 7.5ish? Also, would it be best to completely drain the battery and then recharge to 100? I heard its not good for lithium battery to drain completely and recharge because it will put more wear to it. Any suggestions?
Thanks
There are many theories but the following is what i follow.
It's not a good idea to discharge below 20%.
Lithium batteries don't like to be stored fully charged for long persiods of time, lithium battery is most happy at nominal voltage, so it's not a good idea to leave your device connected to charger if not needed.
I seem to get 1hour of display on use for 10% of battery, this is with minimum screen brightness.
Having read up about this I have decided to charge mine every night no matter what the charge. A typical day use can leave me with 40 percent to 80 percent left. I discovered that a charge cycle is not the same as a charge. A cycle means 100 percent of the charge stored being taken off and put on the battery. So if you use 20% a day and charge each night that is 1 cycle in 5 days not 5 cycles. There is no reason to avoid plugging it in as you dont want the charge to drop too low or else the battery is lessened very slightly.
I am sure there are lots of opinions on this but am happy with the above and battery performance is great. I was worried about unnecessary charging but that is not the thing to worry about - do anything you can to keep it over 20% (although a near total discharge every month would be good to keep the calibration in check).
Don't stress about it too much. Just enjoy the device. With sensible use your tab will he long replaced and discarded before the battery fails.
Sent from my GT-I9100 using XDA App
^^^ my thoughts exactly. By the time the battery fails to hold a charge, the device will be far out dated...
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
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this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
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It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
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Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
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Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
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millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
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No, I do not have a QI charger. I was always using a USB wall charger.
Hi guys, I usually lost about 3% overnight with 4G and power saving mode. But tonight a strange thing happened. For the first time, I got a huge battery drain. I leave the phone at 01:30 am with 25% and this morning I found it turned off. I think that is impossible to lose 25% over 7 hours, what could be happened? I would like to know if the fact that the battery has reached 0% and the phone shutted down can damage the battery.
I am a little bit worried since I read a lot about the fact that the battery never should reach 0% and the phone doesn't have to shutdown.
Inviato dal mio SM-G935F utilizzando Tapatalk
No it can't damage the battery. At least not if you charge it in the next few days. Here's the thing. The battery voltage should never reach under 2.5v. If this happen, the small chipset inside the battery will completely turn it off in order to prevent further loss of voltage. When this happens, the battery pins will be unresponsive, meaning that it can't provide electricity and can't get electricity either. It means you won't be able to charge it with your regular charger. At this point it's not even completely dead, but it would need some professional chargers to in order to revive it.
With that being said, your phone shuts down well before reaching 2.5v. Unless you leave the battery it at 0% for days (or probably weeks) you can still charge it and everything will be perfectly fine.
ZeroCGTI said:
No it can't damage the battery. At least not if you charge it in the next few days. Here's the thing. The battery voltage should never reach under 2.5v. If this happen, the small chipset inside the battery will completely turn it off in order to prevent further loss of voltage. When this happens, the battery pins will be unresponsive, meaning that it can't provide electricity and can't get electricity either. It means you won't be able to charge it with your regular charger. At this point it's not even completely dead, but it would need some professional chargers to in order to revive it.
With that being said, your phone shuts down well before reaching 2.5v. Unless you leave the battery it at 0% for days (or probably weeks) you can still charge it and everything will be perfectly fine.
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First, thank you for the explanation, I don't know so much things about batteries, but I do know that there are a lot of legends out there. Usually I charge my phone when I reach 4/5% not less. Is that a bad beavhiour? About my topic, like I said this is the very first time that the battery completely discharge and the phone obviously shut itself down. When I woke up I putted the phone into charge immediately. I just hope that it's all ok, but I don't understand how it is possible to drain 25% of battery over 7 hours or less.
Inviato dal mio SM-G935F utilizzando Tapatalk
It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter. The worst thing that can potentially happen is to get some odd numbers for the remaining charge. Like having 80% and in just 2 minutes to have 76%. The capacity of the battery will be the same, it will last the same, only the indicator might be a little inaccurate. If you ever notice this, do a full cycle. Discharge it to 0% (let the phone shut-down), charge it to 100% and that's it. It will show accurate readings again.
But you don't have to do that constantly. Only if notice wrong readings.
ZeroCGTI said:
It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter. The worst thing that can potentially happen is to get some odd numbers for the remaining charge. Like having 80% and in just 2 minutes to have 76%. The capacity of the battery will be the same, it will last the same, only the indicator might be a little inaccurate. If you ever notice this, do a full cycle. Discharge it to 0% (let the phone shut-down), charge it to 100% and that's it. It will show accurate readings again.
But you don't have to do that constantly. Only if notice wrong readings.
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Until now i didn't saw any wrong readings, except from 100% to about 94/95% where the battery drop faster. Except that i often let the battery reach 4/5%, but if it is not good i will charge it when it reach max 10%. About the 0% question i hope that this will not happen again and that the battery keeps its complete functionality after this episode
Don't worry, it's good. Li-Ion batteries are way more durable than the old Li-Pol batteries.
I hope so Thank you.
I had 37% battery drained overnight and wondered why...I turned off google photos backup and now is fine. I still lost about 9% overnight but it isn;t too bad as I get a lot of notifications through the night
thegame261 said:
I had 37% battery drained overnight and wondered why...I turned off google photos backup and now is fine. I still lost about 9% overnight but it isn;t too bad as I get a lot of notifications through the night
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In my case my phone drains about 3/4% overnight, but like i said this morning i found it turned off and i leave it with 25% of charge. Very weird, i don't have an explanation yet.
turtuv said:
In my case my phone drains about 3/4% overnight, but like i said this morning i found it turned off and i leave it with 25% of charge. Very weird, i don't have an explanation yet.
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Well on my 6s plus it seems to die when at 8% which it did yesterday. It never gets under 5% it does before that
thegame261 said:
Well on my 6s plus it seems to die when at 8% which it did yesterday. It never gets under 5% it does before that
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The S7 arrives at 1% tops.
It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter.
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About that, i read some topic on other forums where people says that is very bad discharge the phone until 4/5% and they says that the correct thing to do should be to discharge the phone when it reach 40% of charge, because under that percentage the battery's life became shorter. This seems really strange to me.
The phone was great, didnt regret upgrading at all because I was getting great battery life. I have a lifeproof case, used wireless fast charging to keep my battery between 35% and 80% to prevent any battery damage, never had any heat or quick discharging at all. If I set it down while I slept, the battery might lose 4% in 8 hours... Boom, all of that changed yesterday. If I'm using it, it gets hot and the battery drains fast, if I'm not using it, the battery drains slower but still about 16% in 8 hours. If I put it on the charger it gets warm. I've powered it off and back on multiple times, I've turned off fast charging, it doesnt matter. Use or charging gets this thing all worked up somehow when before it played like a CHAMP. The wireless charging wasnt heating it before, i've only charged it to 100% once a week, never dischaged it below 15%. No new apps. Google play services has the highest power useage. Its acting like its got malware or something.
What should I do?
Sent from my SM-G930P using Tapatalk