Let me define a few terms first I am going to use.
Utter drain: Tab used till it switches off automatically and has been left unused and uncharged for several days.
Full drain: Tab used till it switches off automatically.
No drain: Tab charged from 1 to 100%.
I have noticed how my tab if I start charging it from utter drain last A LOT longer on the battery charge compared to if I start charging it from a full drain.
Why does this happen? Can it be fixed? If not is it possible to drain the battery of the tab immensely to create the utter drain status artificially?
My tab 7.7 does not have this problem.
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I bought G Pro day before yesterday. The device is amazing and i love it but i have got a small problem. First day i charged battery to 100% and i got a day usage with 25% of brightness set with screen on time for about a little less than 4 hours which is amazing. Yesterday i had to charge phone twice because the battery depleted within 2 hours on screen time and moderate usage like calls n text (no gaming). Today morning 80% power was left of second charge. I went to college and and did not use the phone much but battery got completely depleted within 1 hour of screen on time at 50% brightness. When i came home back i charged the phone to 100%, when i disconnected charger from phone the charge dropped immediately to 98%. After 3 mins it fell to 93% and now is depleting fast. there is no apps running in background or anything and no apps showing up in battery stats that may be depleting battery. Any solutions to this? can it be faulty battery? Plz Help!!!
Edited: viber or whatsapp was causing this battery drain. I rooted my phone n installed greenify. Hibernating all user apps fixed the battery drain. If anyone has battery drain issue may try this solution.
I am facing a severe issue with the battery of my samsung galaxy SIII which i have purchased in june-12.
Sometime battery of my phone is charged very quickly( max 1 hour) & then it will discharge very quickly(max 2 hours) too. Battery will completely discharge from 100% to 0%(in 2-3 hours).
This problem occurs once in 10 time.
I have observed, When my phone battery start charging very fast, from 10% to 85% in just 20-30 minutes.
i disconnect the charger, Restart the phone & it is showing only 12% battery remaining.
It means phone was not charging just the battery percentage is going up.
this problem comes to me at least once in week. and i have to charge my phone 4 times a day.
Normally, I can use my phone battery for full day once fully charged.
So, it doesn't seems to be a battery issue.
Please have a look in the issue & guide me how to proceed.
its not that old, maybe 6 months old, about the last 3 times that my battery has nearly fully discharged, its not got all the way to 0% and has been going off at 3% but then when i plug the charger in and turn the tablet back on the battery shows as 0%
i also noticed the other day it was at about 4% battery and i wa son a pool game, the screen started flickering on and off, and then it turned off, not sure if that's just because it was on the very end of the battery, but was still around 4% anyway so should have been ok till 0%?
any ideas if i have something wrong or is it normal?
James
The tablet will shut off once the battery is depleted. Anywhere under 10% is normal. Letting your device run that low is hard on the battery and will reduce its lifespan.
Read this: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
The battery meter is not even remotely as accurate as you expect it to be. Its just an estimate of battery voltage versus how you are using the device. Don't expect it to be accurate to within a few percent, or even 5-10%.
Heck, I've had some devices show a drop of 20-30% and shutoff. Probably just some metering error, and it didn't happen often. But that tells you how inaccurate the meter can be.
As another mentioned, deep cycles are not good for the long term life of Li ion batteries. Charge fully and frequently.
Hi,
i just bought a Samsung Galaxy Tab Pro 8.4 Wifi. The tablet is really great but the battery drain is a joke. I lost about 10% over night in standby. I turned off Wifi, enabled eco mode and all the time the "Anroid System" service take 40-50% off battery consumption. But there are no wakelocks (e.g. Display on time for example 30 min and System process 40min.). Before i got the Pro 8.4 i own a Tab 3 and there the battery drained 10% in one week, if not in usage. Somebody else having this problem? Maybe my magnet cover causes a sensor error, which drains battery? Or haven´t the battery reached max capacity through charging? The Tablet is not rooted.
Is the tablet brand new, like the last day or so? If so, you need to go through a full discharge cycle (drain to 10% or so, then charge to full) in order to properly calibrate the high and low flags on the battery meter. The meter is often not properly calibrated out of the box.
redpoint73 said:
Is the tablet brand new, like the last day or so? If so, you need to go through a full discharge cycle (drain to 10% or so, then charge to full) in order to properly calibrate the high and low flags on the battery meter. The meter is often not properly calibrated out of the box.
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Yes i get is factory new on friday last week and charged it 2 times since that. But i was never below 20% battery. I will try that this time. Thank you!
so is it just me or does setting up this watch drain the battery VERY fast? I just got my 360 this morning and when setting it up, pairing it to my galaxy s3, etc, the battery went from 100% to 75% in a matter of 1/2hr, is this normal?
During setup a lot of data is sent to the watch which causes the increased battery drain. After everything is synchronized you should see battery life stabilize after a couple of charge cycles.