Huge battery drain -60% in seconds

[Mezto]

I got my S7 on release day. About a week ago I saw the battery drop from 60% down to 3% in about 15 seconds. It has happened almost every day since. The battery is usually between 70 and 55% and drops down to 3% in just a few seconds. I have not been able to identify any single app or action that causes the drain. Sometimes I am using the phone, sometimes that phone is just sitting on the table. Only once have I actually noticed the drop as it was happening. It was losing 1% about every 2 to 3 seconds. I plug the phone into a car charger and it still continued to lose power. Once it gets to 3% I can charge it back up rather quickly to 100%, within 2 to 3 hours.

I have not seen this happen more than once a day, always during the day at work. I work outside but i doubt it's temperature related as the battery drains even when it's 50 degrees outside.

I have been unable to find anything close to this problem online anywhere. Any suggestions?

 

[chanchan05]

How have you been using the battery? At what percentage level do you usually plug it in, and are you using fast charge? Does it heat up during charging?

 

[mikedt]

It's an S7, less than a year old, so I think the battery shouldn't be worn out yet. Sounds like could be a fault with it, which should be covered by the Samsung warranty. It's not getting mad hot is it, like some of the Note7s did?

 

[Mezto]

There is no heat when it is fast draining. I rarely let it get below 20% (unless it fast drains like i described). Every night it sits on a slow charge wireless pad. Often i have it connected to the fast charge samsung walwart after work. So i guess i have it plugged in a couple times a day and wireless pad at night.

Today i used the phone without any fat draining happening. Almost seems like a software glitch, like not reporting the accurate battery charge. But it definitely sits the phone down fast if i don't catch it.

I have had cell phones for years and never seen anything like this.

 

[mikedt]

Definitely doesn't sound right. Samsung usually provides a one year warranty, two years if you're in an EU country. I think it's definitely worth seeking out your nearest Samsung service centre.

I did have a Galaxy Win Duos doing odd things with power once. But it was a crappy and faulty third-party battery that was the culprit in the end.

 

[Mezto]

Also i used the vr headset a half dozen times right after i got the phone and it dodgy get really got, even sit down once, but that was months ago. Haven't used vr for at least 6 months.

 

[chanchan05]

Well, first thing I'd suggest is a cache clean-up. Then see if it recurs regularly, and seek a service center to check if it does.

 

[seVer]

FFS... lots of assumptions here. go to settings> battery. what's showing as having used the battery? post a screenshot if you can.

 

[Mezto]

FFS... lots of assumptions here. go to settings> battery. what's showing as having used the battery? post a screenshot if you can.

When i have checked it out shows google play services using 18% and a half dozen other entries below that.

It didnt happen yesterday.

 

[tienkhoanguyen]

I got my S7 on release day. About a week ago I saw the battery drop from 60% down to 3% in about 15 seconds. It has happened almost every day since. The battery is usually between 70 and 55% and drops down to 3% in just a few seconds. I have not been able to identify any single app or action that causes the drain. Sometimes I am using the phone, sometimes that phone is just sitting on the table. Only once have I actually noticed the drop as it was happening. It was losing 1% about every 2 to 3 seconds. I plug the phone into a car charger and it still continued to lose power. Once it gets to 3% I can charge it back up rather quickly to 100%, within 2 to 3 hours.

I have not seen this happen more than once a day, always during the day at work. I work outside but i doubt it's temperature related as the battery drains even when it's 50 degrees outside.

I have been unable to find anything close to this problem online anywhere. Any suggestions?

Go to the apps section usually in setting and disable any app that you use! Be careful not to disable any that you need or else you need to go back to the phone store to reset. Some apps don't shut down like when I program my app certain versions just don't allow shut down. It allows exit but not exit and stop.

 

[bIOforger]

Battery is obviously faulty. Software or apps would not cause such a dramatic loss in a short time. Call a Samsung service centre, or your carrier support.

 

[Mezto]

Thanks everybody. I cleared my cache today and, for the second day, had no fast drain (yet). But I've been off work too. Odd that I've never seen the drain happen at home. Im a letter carrier in Ohio so i have my phone out in varying temperatures. It only started doing this when the temp got down into the single digits, but has also done this since it was 50 degrees out.

I can find no rhyme or reason for it except that it happens around 60% battery +/- 5% and between 10am and 2pm. Makes no sense.

 

[Mezto]

After running fine for 4 days my phone decided to drain again today. Here's a screenshot of the battery right after the drain.

 

[bolski]

Does this occur no matter where you are located? Have you tried, for instance, turning off mobile data when you're connected to wifi? Also, do you have it set to switch between the two if WiFi is too slow? Could be the constant searching for WiFi and/or switching between wifi and mobile data? That can cause a drain, but I don't think at the extreme you are seeing. Otherwise, it might be a bad battery or some other hardware failure that is causing it to chew through your battery like that.

 

[lunatic59]

The battery stats are measured by monitoring and comparing recording voltage output. This type of instant drop is indicative of a bad cell in the battery. Seriously, get it replaced under warranty.

 

[Mezto]

Thanks for the updated responses. I'm definitely going to contact samsung and pursue a battery repair.