Battery loss during screen off

[patcal]

Had my unlocked S21+ for a couple of weeks. I notice my battery is draining about 15% overnight. As a comparison, my Note 9 goes down about 4% overnight. I have no wakelocks according to betterbatterstats. My deep sleep was 87% with screen off.
Any thoughts on this? Thanks.

Pat Callaghan Jr.

 

[B. Diddy]

When you wake up in the morning and check the battery stats, what shows as using the most battery?

How's your cell signal?

 

[patcal]

Thanks for the response. Samsung home seems to be using the most. Cell signal seems fine.

 

[B. Diddy]

You're talking about Samsung One UI Home (i.e., the launcher), and not some kind of smart home app, right? Try clearing its cache, then force stopping it.

 

[patcal]

What I'll do is post a screenshot tomorrow morning.

 

[patcal]

Here are 2 screenshots of my overnight battery usage.

 

[mustang7757]

Try turning AOD off see what happens

 

[patcal]

Try turning AOD off see what happens

I'll try that. I have AOD on because AODnotify requires it. Thanks.

 

[mustang7757]

I'll try that. I have AOD on because AODnotify requires it. Thanks.

Ok let us know

 

[B. Diddy]

Does Quickbooks Time have to be active all the time? That looks like it might be contributing.

 

[patcal]

Does Quickbooks Time have to be active all the time? That looks like it might be contributing.

Not sure. I will have to check with my payroll dept.

 

[B. Diddy]

In the meantime, try clearing the cache and force stopping Quickbooks Time, then open it again.

 

[MoreDef]

I personally just put it on extreme battery saver while I sleep. It keeps the inevitable android drain down to half a percent per hour. Not great, but it's the best I've seen in an Android that's actually got useful apps and is used to it's full potential.

I say this because I use a Note 4 for emulation, and I've stripped it of any and all apps that don't have anything to do with emulating games, and when I put that in extreme battery saver, it barely loses anything. But then again, it's not a phone at this point, it's a PSP/Dreamcast/PS1/GBA/SNES/NES/Genesis.

 

[patcal]

Does Quickbooks Time have to be active all the time? That looks like it might be contributing.

After stopping AOD & Quickbooks background I only used 4% last night. Thanks for the help.

 

[fuzzylumpkin]

Another solution would be overnight charging.

 

[patcal]

Another solution would be overnight charging.

I realize that. That was not the issue. Why it was draining so much overnight was the question.

 

[Roadijeff]

I have an app on my S21U called CCleaner. One of its features is I can use it to close all non-essential background apps. I usually run it once a day (takes about 20 seconds) and it closes 35-40 things running. I don't know if that improves battery life but I regularly get 3+ days out of a single charge.

 

[fuzzylumpkin]

I realize that. That was not the issue. Why it was draining so much overnight was the question.

Indeed, but now we've got to the bottom of that I thought something that doesn't involve turning things you may want to use off might be good.

 

[patcal]

Indeed, but now we've got to the bottom of that I thought something that doesn't involve turning things you may want to use off might be good.

Thanks. I found another app that recreates a LED notification instead of AODnotify. It does not use the AOD, which I have never used on a phone before.