"ransley" wrote in message
...
On Jan 20, 4:50 pm, wws wrote:
On Jan 20, 4:32 pm, ransley wrote:

I have a 2002 Volvo with a big battery , its original and probably
just worn out , but I check it at night after driving its 100% @13.3v
and in the morning its 75% 12.5v or so. But strangely it only takes 5
minutes at 15 A. to get to 100% or 13.3v . Most likely battery is just
old and bad, ideas. How do I check a draw of amps on a battery to see
if I have a short. Or do I just get a new battery and worry later or
not at all.

100% for a car battery is 14.7 volts.
Bad battery.

wws

I thought it was 13.3 volts , 14.7 is alternator output, go check your
battery voltage, I bet its 13.3 not 14.7 or nearer to 13. Let us know.
Check it after 4 hrs at least rest. 50 Bucks says you are wrong. Hmmm.

14.7 with eng running, 13.2 / 13.3 batt only.