How to spec battery backup:
Amps of device @ 120vac x 10 to convert to amps needed with a 12v battery. This gives you amps/hr you need for you battery. For total energy multiply that by time
Ie. 40w @ 120vac is .33A x 10 = 3.3Ah brown out last 2 hrs. You need a battery that has at least 6.6Ah with a discharge if 3.3Ah. Then multiply by 25% for inverter and losses.
For more details, please check:
https://www.facebook.com/groups/spooky2/permalink/978058405689396/
Comments
Please sign in to leave a comment.