Li-ion battery : Connected to AC at 100% vs. Charging 35%-75%.

Lordofdeath123

Lordofdeath123

Lordofdeath123

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Joined
28 Mar 2013
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45
Hi all.

I had a question about battery care. I know neither is ideal, but, of these two, which one is better?

1. Constantly having the Laptop connected to the AC at 100%
2. Charging to 75%, using on battery till its on 35%, than charging to 75% again etc.

Ignoring the impracticality of the second option, which one wears out the battery less?

Note that the battery is not removable, so charging to 50% and removing it is sadly not an option. Also, the Laptop (which is an Acer) has no inbuild power manager, that can cap the charge to 75%, and only keep charging up once it hits 35% (of natural discharge!, rather then discharge through battery usage).

As such, I am kinda in a situation where I have to choose between 1. or 2. I should also mention that I do not know when the laptop will start recharging, at 99% or 95%. I hope for the latter, but fear the former might be closer to the truth, since the Laptop really seems to lack any kind of battery management.

Cheers.
 
some controllers will not draw from the battery while plugged into AC.
Click to expand...
I am pretty sure that this feature exists on this laptop, as well as on most semi-modern ones. The thing though is this, the battery naturally discharges to 99%, and fairly fast too. (Much fast than say 50-49%). At this stage, `some' (I am not sure if this laptop does or not, I asked on their forum: no replay), laptops recharge immediately. Hence, it could be recharging 99-100 all the time, which is apparently fairly bad. Much worse than 49-50%. But, since it is still discharging much slower than when used, I am not sure which is worse.

I do tend to agree with you though... Bloody integrated batteries and bloody `planned obsolescence '.

Cheers.
 
Fair enough. I was given to understand that typical laptop batteries discharge to 99% often in a few minutes. So, having it go 99-100, 100-99 10 times an hour seemed also quite stressful. I am kinda sad that with about 5 gazzillion articles about battery care, no one actually writes anything more than a copy-pasted sequence about what a discharge cycle is and than the three standard tips that one should not always let it go to 0%, that one should not throw it down a volcano, like the one ring, and that one should discharge to 50% before disconnecting it, when not used...

Oh well... I guess I will just use the AC whenever possible and watch on HWinfo what the wear level is. If it goes down too fast, I will try to keep it 35-75% for a week and see what that does... Ultimately, I will just learn how to replace the battery cells, hehe. That seems cheaper.

Thanks for the replays mate.
Cheers.
 
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