3 Dec
2008
3 Dec
'08
6:54 p.m.
Randy Kramer wrote:
On Wednesday 03 December 2008 03:06 am, Giso Grimm
wrote:
Current is measured in mA. mAh denotes capacity. ie. a 2400mah battery
should deliver 2400 mA for 1 hr, or 1200 mA for 2 hrs etc.
In my tests both used SSD (the Asus an SSD and
additional SD card),
and
the lid was closed. The Acer battery says
11.1 V, 2400 mAh, 45 Wh (well, if I multiply capacity and voltage I
get
26.6 Wh)
I should know more about batteries but I wonder if there is some sort of
phenomena that limits the current output--what I mean is, maybe the
peak current output is 2400 mAh, but maybe it can do that (or some
fraction of that on sort of a decreasing curve) for more than 1 hour?
Of course, the counterexample to that would be a dead
short on the
battery, which I'm quite certain will draw more than 2400 mAh. But
even then, after a brief dead short followed by a rest, won't the
battery recover and be able to deliver some more power (assuming the
battery is not destroyed by the dead short).
Just don't do it. :) Lithium batteries will overheat and possibly catch
fire or even explode. I fly RC helicopters using LiPo batteries. You can
find videos on YewToob of this happening.
LiIon batteries in computers are not so volatile, but not immune either.
Fires have been recorded and millions have been recalled/replaced by
manufacturers in the past for safety reasons.