Battery dropped 20% overnight. How can I find out what's causing it without rooting? - X Style (Pure) Q&A, Help & Troubleshooting

Nothing in the battery stats is abnormal and the phone didn't wake up a lot yet I lost a ton of battery overnight. How do I find what caused it? Also is their anyway to tell if I have a defective battery? A lot of people here and at /r/motox seem to be getting better battery life. I can barely get 3 hours of sot over 10 or so hours. I really want to keep this phone but if this is going to be normal then I might as well go back to the Note 4.
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Sent from my Nexus 9 using Tapatalk

Install System Panel and let it log the data for some time. I have the paid version, but I think the free version is similar.

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Battery drain/ sudden shutdown

Hi just wondering if anyone else has had a issue with the battery suddenly having reduced charge. Over the last few days my wife has been complaining about her phone discharging in only a few hours. I thought an app might be causing it but I've looked and can't find anything that would cause wakelocks. Now she's complaining that the phone has shutdown after showing a 70-80% charge and then when it started back up was nearly empty. Has anyone else experienced this or can recommend a possible fix please? I'm going to try a factory reset when I get home from work but would appreciate any advise.
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Sent from my Nexus 4 using Tapatalk
That phone has one of the faulty batteries.
Call Samsung and get a free replacement

Battery draining after 5 hours.

Battery is draining to fast. I have to charge by noon when I take it off the charger at 6:30am. I kill all my apps but a main process in the system is alwa ys running, anyone help??
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Sent from my SM-G900P using Tapatalk
Rule out the possibility of a bad battery. Check the battery connections are clean, and if you have access to a different battery try it and see if the phones behaves differently.
If you swapped batteries and battery still drained in <6 hours then it is best to back up your files and do a full factory reset.

Phone not sleeping/entering doze. Crazy standby drain.

Hi all, my exynos variant of s7e is experiencing crazily high standby drain. I don't remember seeing this kind of drain during the first few weeks of getting the phone.
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I did a test to show, phone unplugged at 100%, left on table without using. ~12hrs later. whopping 60% gone. It's only the 3 processes you see, nothing more.
Anyone have the same problem? Any idea how to find the cause? Used to have great battery life. It's not normal right?
Have a look at these threads (which have been right under your nose in Q & A )
How many of you experiencing high android system battery drain?
A temporary fix for battery drain
Post your battery life!!!
Mine was doing that also, so I did a factory reset and I didn't use smart switch to add my apps and stuff. Its been sleeping beauty since. I know its a pain to reset, but was worth it.

Android OS battery Drain

I used to have around 6 hours Screen on time with around 20% left per day, now I barely past one hour and a half screen on time and my battery is at 50% , I can see that " android os" is using my battery quite extensively , the only thing I tried is deleting the cash and disable some automatic sync, can someone suggest a solution ? and can you please share how much android OS uses of your battery (in mAh) ?
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Battery all of a sudden is totally garbage

Not a month ago I was getting 5+ hours of screen time a day with room to spare and I would go to bed with 15-20% battery left. Now I can't even make it the day and struggle to get 3 hours, just tonight I went from 11% to 2% in a matter of minutes. It looks like the Android system is sucking up all kinds of battery, I've been using Gsam Monitor since May:
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What gives? I have all my bloatware disabled, I have no clue what's going on. Reboots do nothing.
I think a factory reset may solve your issue. It never happened to me since no rom has been in my phone more than a month

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