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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...
BFL13's avatar
BFL13
Explorer II
May 22, 2013
This would be part of the puzzle, but you need to know the AH capacity of each battery type there at its 20hr rate. eg a U-2200 (see 6v table) is 232AH at its 20hr rate (which is 11.6a)

Also note they go to flat instead of just down to 50%, so halve the times if they do that

http://www.usbattery.com/usb_images/USB%20Ampere%20Chart.pdf

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