I own an Acer Aspire 5755G on Windows 7 x64 and I recently read that keeping your battery charged at 100% the whole time degrades battery life.
The problem is, I always keep it in my laptop but never really use the Battery since the laptop (or should I say notebook) is rather big and I usually use it on my desk with the power cord. Although I remove the battery when gaming, I like to have it on most of the time as a UPS in case the power goes off.
Is there any utility that will keep the battery charged until, say, 20-60%?
Best Answer
"I recently read that keeping your battery charged at 100% the whole time degrades battery life."
This is a myth.
It’s fine to leave your laptop plugged in at your desk when you’re using it, as the laptop won’t “overcharge” the battery — it will stop charging when it reaches capacity. However, just as you shouldn’t store your laptop’s battery at full capacity in a closet, you shouldn’t leave your laptop plugged in for months on end with the battery at full capacity. Allow your laptop’s battery to occasionally discharge somewhat before charging it back up — that will keep the electrons flowing and keep the battery from losing capacity.
Battery University says that “the worst situation is keeping a fully charged battery at elevated temperatures.” If your laptop produces a lot of heat, removing it might be a good idea. If you have a fairly cool laptop that you occasionally let discharge a reasonable amount, leaving it plugged in — even for days on end — shouldn’t be a problem. If your laptop gets extremely hot, you may want to remove the battery.
Read more at "Debunking Battery Life Myths for Mobile Phones, Tablets, and Laptops"