RE: What is the life span of a battery?
(14 Dec 2014 04:33 PM)Tim_A Wrote: Wrote: 2 is not so necessary with newer battery tech as it used to be, but yes you should run them on batteries as much as you can, and drain the battery "a reasonable amount regularly"^^ What Tim said!
I've got one old laptop (~ 5 years) that's effectively mains only cos it was never unplugged. The battery won't hold a charge for more than 15 minutes, and you can't get replacements now.
Deep discharge cycles (ie. draining all the way then recharging all the way) can actually damage the latest battery technology if done too frequently, but regular charging and discharging is essential for good battery health.
I have a MacBook Air, and tend to put it on charge when it gets down to 30-40%. It could still run for several more hours, but since this battery is effectively non-replaceable I'm keen to keep it in good condition.
I have destroyed laptop batteries by keeping them plugged in all the time.