is it dangerous to let the phone drain battery down to 0?

[WilliamLundstrom]

I do often fall asleep while some stream is running in the background, have happened some few times now. Will this affect the battery? Or does the phone turn of its self to prevent to drain all battery that's left?

Posted via the Android Central App

 

[pre1561]

From what I understand you should not let the battery run all the way down all of the time. It could ruin the battery. I charge my battery when it get's somewhere under 40 percent.

Sent from my SM-N910P using Tapatalk

 

[My Android sucks]

I wouldn't say it was dangerous, but probably not a good habit.

I'd imagine that the circuits inside will shutdown the phone before any battery damage (cell reversal) is caused by fully draining the battery.

 

[clevin]

It's okay. The 0% is really not 0% anyway.

Large depth of discharge (DoD) does impact battery capacity, but Note 4 has a replaceable battery, so no fuss.

 

[dpham00]

Definitely not dangerous, though as said above, not the best for the battery

Sent from my Verizon Samsung Galaxy Note 4

 

[D Android]

I read somewhere that fully discharged lithium batteries can explode when connected to a charger again. Or is it not true?

 

[My Android sucks]

I read somewhere that fully discharged lithium batteries can explode when connected to a charger again. Or is it not true?

This has been the case with some variants of lithium based cells, go check some YouTube vids out, but all modern mobile phone batteries won't fully discharge to the point of no return. They are very safe.

 

[z06mike]

Who cares if it shortens the life span of the battery?? Enjoy your phone and if a year down the road you need to spend $20 for a new one, so be it! If you constantly do it, MAYBE it will shorten the life of it, but don't let it bug you!

 

[currentdroiduser]

I'd say once a month no big deal it may help allow the battery to reset

posted with my note 4

 

[C.K400]

I was under the impression that if you never let it go to zero and die that it will actually hurt the battery life and that's its good practice to let it got to zero often to keep a full range of life. I can tell when its time to reset the battery because I will notice that when it gets low you see faster drops in percentage and it doesn't last as long anymore.

 

[Bordcla]

I was under the impression that if you never let it go to zero and die that it will actually hurt the battery life and that's its good practice to let it got to zero often to keep a full range of life. I can tell when its time to reset the battery because I will notice that when it gets low you see faster drops in percentage and it doesn't last as long anymore.

That may have been true for older/different types of batteries, but I was under the impression that the newer li/ion batteries didn't have a "memory" like what you seem to be referring to and that it was best to not let them run down too much, if possible.

Worth confirming with latest info, because one of use clearly is in the wrong now!

 

[jlczl]

For my last few phones I've had an extra battery. I always let it drain to zero before I put in the fresh battery. A few years I've done it this way with no ill effects.

Posted via the Android Central App

 

[LaTuFu]

It is not dangerous, there is a lot of safety factor built into the battery circuitry. As someone else mentioned, "0" is not really "0" it is "lowest voltage deemed safe for maintaining battery integrity."

Running down to 0 a lot will reduce the service life of the battery, that's about it. Since you can buy replacement batteries when this happens, it is basically a non-factor. When your battery starts having noticeably shorter "up" times, then you know its time to start thinking about buying another one.

Enjoy using your phone the way you prefer.

 

[Ntchwaidumela]

You know how I know when it's time to charge the battery? The phone tells me so. I've never fully discharged my battery, but I've let it go as low as 4%.

 

[natehoy]

I'm letting mine run down to the "phone shutting off" point for a couple more times (first time was today), but that's in the possibly obsolete belief that this serves some purpose in battery calibration.

After that, my intention is to keep the battery charged per the dictates of my personal convenience. This is based on the simple fact that I left the the "non-removable battery phone universe" (two iterations of the otherwise-stellar Moto X) so I didn't HAVE to worry about tiny accumulations of battery damage over time leading to a phone that can't hold a useful charge in a year and a half. I'll just order a $30 replacement and start over.

 

[LaTuFu]

I'm letting mine run down to the "phone shutting off" point for a couple more times (first time was today), but that's in the possibly obsolete belief that this serves some purpose in battery calibration.

You are correct, that kind of "break in" is not necessary with lithium batteries.

 

[Ntchwaidumela]

You are correct, that kind of "break in" is not necessary with lithium batteries.

The new lithium batteries don't require this type of break-in. A few years ago, they did.

 

[Hayyden]

It doesn't hurt to let it die

 

[trucksmoveamerica#AC]

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

Read that, it will tell you. You can find out everything you want about batteries here.

 

[anon(5719825)]

These days, you can let them run down to whatever percentage you want. I let mine get down to about 5% and then I charge them. You will not damage the battery by charging it whenever you want.