Been using the Galaxy Note 8 since it came out,really like the phone with one nagging issue. When the battery reaches 15 percent it either drops to a flat 0 or a mere 5 or borders between 10% and 0%.
I have tried a factory reset and cache wipe and the issue seems to persist.
Is this common or an isolated problem??
Do I need to get my phone checked at the service Center?
I have seen this battery behaviour in many devices, when the batt gets very low, the charge reading is not very reliable, I would worry if the sudden drop happens at, normal levels, for example, 50% then suddenly droping to 30-35%, anyway it is not good to let the batt go below 20% it would be more interesting to know the overall behaviour of the batt along the entire cycle, that is, how long it lasts untill you reach the erratic level you talk about
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Droid 4 running Eclipse.
I've noticed that after charging my phone to 100% and going throughout the day, battery life is amazing. I get wonderful stats; I can go 12+ hours (and then some) on a single charge.
However, the issue occurs when my phone starts to drop into the near-dead area. When my phone reached 10%, I usually start easing up on data usage, leaving the screen on, and so forth. But the real problem is that I can be using it when it's (supposedly) about to die, and literally WATCH the battery meter drop to 1%. And it will remain at 1% battery for anything from an hour to four, depending on how I use it.
I'm lost as to what I can do. There are no options in Safestrap 3 to sipe battery stats, so I had to resort to a Market app to wipe the 'batterystats.bin' file. Even then, the app that wipes that file shows the battery at over 3000 mAh of juice... yet this device only has a 1785mAh battery.
So I'm confused. I want to make sure that it's reading proper battery levels, and I want to bring it back to where it should be.
Does anyone have any suggestions? I'm not sure what else to try.
Just saw this too! Was worried about battery life, as it dropped from 100% -> 10% in about 8 hours, but then stayed there for many many hours.
I just got the phone, so did calibrating the battery help with your one?
So its been 6-7 months since I encountered this problem for the first time.
Earlier I thought that maybe my battery's (orignal) fault, but last month I changed my battery (new, chinese) and I am still facing this problem.
Things I have already tried:
Deleting battery stats (through multiple apps)
Draining phone, recharging 3 times
Flashing rom again (from stock to cm11 to cm12 to current cm13)
Everytime I am about to reach to 26%, the phone dies. When it restarts (after charging a bit) it starts from 5%. It keeps charging at a normal pace until it reaches 73-75% when the charging speed increases drastically (74 to 100 in less than 5mins)
It maybe possible that the new battery I bought has the same defects as the previous one did but chances are slim.
Is there anyway to fix this? Is it possible to measure the real battery capacity? Also, can I change the system files in such a way that I get relative battery percentage (change system default 2300mAh to 1800mAh)?
Thanks!
I am also facing the same issue. I have lg d850 when reaches 30% phone restarts and finally shut down.
Sent from my LG-D850 using XDA-Developers mobile app
Your batteries are bad and don't withstand the required max current - thus the shutdowns. Chinese batteries are bad even when they're new. Original batteries can and do become bad with time - they degrade. Especially if they get hot a lot and/or are brought down to 0% often. Sometimes when battery goes bad, it's blown and you can see it having a "belly". Sometimes not.
TaAaZZ said:
So its been 6-7 months since I encountered this problem for the first time.
Earlier I thought that maybe my battery's (orignal) fault, but last month I changed my battery (new, chinese) and I am still facing this problem.
Things I have already tried:
Deleting battery stats (through multiple apps)
Draining phone, recharging 3 times
Flashing rom again (from stock to cm11 to cm12 to current cm13)
Everytime I am about to reach to 26%, the phone dies. When it restarts (after charging a bit) it starts from 5%. It keeps charging at a normal pace until it reaches 73-75% when the charging speed increases drastically (74 to 100 in less than 5mins)
It maybe possible that the new battery I bought has the same defects as the previous one did but chances are slim.
Is there anyway to fix this? Is it possible to measure the real battery capacity? Also, can I change the system files in such a way that I get relative battery percentage (change system default 2300mAh to 1800mAh)?
Thanks!
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Click to collapse
Trying wiping your phone?
Jack_R1 said:
Your batteries are bad and don't withstand the required max current - thus the shutdowns. Chinese batteries are bad even when they're new. Original batteries can and do become bad with time - they degrade. Especially if they get hot a lot and/or are brought down to 0% often. Sometimes when battery goes bad, it's blown and you can see it having a "belly". Sometimes not.
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Click to collapse
+1
I agree. I got a new battery and my phone would die at around 50%. Tried all sorts of things but no change.
It's definitely the battery. Luckily I could return mine and get a refund
Mine Dies anytime at 15% 20% or even below 25%, So always i connects when i know its below 25%
Hi. I just got my P9 Plus last week. Seems to me people are having insane experiences with their batteries like almost 2 days of usage with quite a fair amount of SOT. However, I'm unable to even get past 1 day without charging my phone in the middle of the day some times. Even if i just use instagram, whatsapp and facebook or surf the net, it drops 10% in less than 45 minutes not sure if that's normal? I checked the consumption levels and something called Android system was the highest for some reason. I read online some reviews they tested the battery life by runnning a video for 90 minutes and they only dropped 13%. I lose 5% in less than 20 minutes. Again, Android system was the highest. I then tested it myself, I just played Summoner's war, watched youtube and dramas, then when my batter dropped from 100% to 40% I checked the consumption, though I expected the Screen and the Game to take up bulk of the usage, Android system claims top spot again for some reason. Is this normal or do I have a faulty phone/battery?
I feel sorry for what you are experiencing because such a battery loss is definitely not normal. I have P9Plus(dual SIM version L29) and I put it on charger every 2 days with SOT 7 to 8hours(over 8 hours is not uncommon). It's definitely the best mobile I've ever had - batterywise and otherwise too.
First thing I would do would be updating the firmware and clearing the cache and even reset to factory mode. Install just few basic apps u feel you can't live without and observe how is battery doing. In this way you can eliminate the fact that your batt drain is caused by some app conflict etc. You should disable wi-fi/bt scanning(it is useless anyway) and location services too. If you can, disable the autosync too. Later on you can enable it again and see if it changes anything.
If no improvement you can post the print-screen of your battery data here so we can take a look and maybe we can figure out something.
Last idea that comes to mind is that you were unlucky and have faulty battery - just look at Samsung's Note7 and what kind of headaches their own battery gave to them. Sometimes it just happens that battery may come faulty from manufacturing.
I have been experiencing this problem for 2-3 months. I charge my phone to 100% and when i reboot my phone (for some other purpose) battery level drops to 40 or 60% and this is extremely annoying. Usually when this happens i shut down my phone pull the battery out and put it back. After powering on the battery level is back to the correct value. But now it is not working. The battery level stays there and decreases. Well it only happens sometimes but still when i need my device it is low on battery.
I searched on the internet but most people using galaxy s2 were facing this and they recommend doing a battery calibration which i didnt find useful.
Any solution?
I have uploaded the battery usage in case it is needed.
Hi I noticed that my watch battery drains so fast. I charged it at noon and finished the charging at around 1 PM and after 4 hrs of not even using it much, it's down to 65%.
I would like to return the watch if the battery drains like this so fast. Any advice?
This was my fear about buying the watch. My Galaxy Watch lasts about 6 days on a charge. Try factory resetting it, maybe. Something might be stuck running.
whilmeister said:
Hi I noticed that my watch battery drains so fast. I charged it at noon and finished the charging at around 1 PM and after 4 hrs of not even using it much, it's down to 65%.
I would like to return the watch if the battery drains like this so fast. Any advice?
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How long have you had it? There is a period where you are playing with it more (without realizing it) and it also takes the battery several charge cycles to balance out the battery and measurement.
To troubleshoot:
Go into the Galaxy Watch app on the phone and look and see what is draining your battery. If it's a watchface, change it to test. If you don't notice anything unusual, factory reset the watch and do NOT restore the backup. Run it for some time in a "vanilla" format (no apps / watchfaces / no modified settings). If it STILL drains .. you might have an issue.
I have the 45mm LTE SM-R845U. Have LTE on, WiFi on, Bluetooth on and connected to my Note 10+. Currently 1 day 14 hours 14 min on battery and setting at 34% battery available running in standard power mode.
wattsja said:
How long have you had it? There is a period where you are playing with it more (without realizing it) and it also takes the battery several charge cycles to balance out the battery and measurement.
To troubleshoot:
Go into the Galaxy Watch app on the phone and look and see what is draining your battery. If it's a watchface, change it to test. If you don't notice anything unusual, factory reset the watch and do NOT restore the backup. Run it for some time in a "vanilla" format (no apps / watchfaces / no modified settings). If it STILL drains .. you might have an issue.
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Click to collapse
Thanks Wattsja! I'll do it today.
I'm actually playing around with "I'm Alive" for a true AOD. I'm still analyzing, but my current burn is @4% an hour with a constantly visible second hand (the non-continuous quartz motion). That's a 45% OPR, for the nerds (vs. Samsung limitation of 15% in dim mode).
I have a much more involved work around that is potentially a little better, as I suspect an active display looking for touches and gestures is a significant battery drain in this scenario. If I can get the burn down to 3% per hour, I might just keep this watch
I agree pretty much what others are saying here. Batteries need time to settle, and there's a lot more interaction with your new toy and lots of stuff updating and installing, far more than you think. It's exactly the same with phones.
So give it a few days and you will see it improve to your expectations.
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I experienced intensive battery drain. Bluetooth seemed to be in a faulty status. Watch battery duration was less than one day (SM-R800 46mm). Solution was as simple as unpairing the watch and re-pairing. No need to reset.
In a previous occasion battery drain was simply due to Wi-Fi on.