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qwerty11's avatar
qwerty11
Explorer
May 22, 2013

Help with calculations: length of time running on battery

I need help with this as I'm getting confused. Could somebody break down the calculations to figure: How long will a 12V battery with an amp/hr rating of Y (assuming its based on 20hrs) maintain a...
HiTech's avatar
HiTech
Explorer
May 22, 2013
Here's an extremely crude one. It will be wrong for big loads on small batteries but it is a starting point.

Calc

This one is a little better. Divide your watts by 12 and enter that in then hit calculate.

Calc2

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