"RobsSanta" wrote in message
news:WNQ2d.43479$9Y5.11833@fed1read02...
My brain has totally gone blank for this simple question, I know I should
have paid more attention in school !!!.

I just was given a 12volt 1200mAh battery and a 200mh 3W wall charger
SNIP
how long should it take to full charge this
battery using the supplied wall charger ? By the looks of it, the charger
looks like your standard charger, no auto cutofff etc.


Rob.

Divide 1200 by 200, and the short answer is 6 hours. That is the short
answer.

The wall chargers are sometimes really far off in the real value vs. the
stated value, sometimes 50%, or more. That means it could take 12 hours or
4 hours. You could rig up a splice to test the output with a meter, or you
could charge for varying times and check the battery voltage. When the
battery is reading about 1.28V per cell, after it has rested an hour or so,
it is pretty close to full.

Or you could charge it 8 to 12 hours, and go with it. ;-)
--
Jim in NC


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