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johnm1's avatar
johnm1
Explorer
Apr 15, 2016

Looking for Battery & Solar sizing spreadsheet

Hey all, I had a link to one that I liked but can't find it now and apparently I'm not using the correct search terms either because nothing turns up in a search. I'm trying to figure out how mu...
GordonThree's avatar
GordonThree
Explorer
Apr 15, 2016
johnm1 wrote:
pianotuner - how do you use a kill-a-watt meter on 12vdc "stuff"? I'm not worried about AC things.


With a fully charged battery, put the kill-a-watt between your rv and your shore power outlet. Switch the meter to watts mode. Watts are watts no matter ac or dc.

Roughly:
Watts to amps in AC divide by 120
Watts to amps in DC divide by 12

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