PJ Diaz
Well-Known Member
80watts? All you need as a 12v marine battery and a power inverter to last you for days.
Watts / Volts = Amps per hour
80watts / 120 volts = 0.67 Amps per hour
A $90 marine battery usually has around 600 CCR (cold cranking amps). To convert CCR to Amp Hours, multiple CCR by 0.7, so a 600 CCR marine battery is 420 Amp Hours.
420 AH (battery capacity) / 0.67 amps per hour (your draw) = 626 hours (26 days) of capacity. No need for a $2000 power wall. Get a 100watt solar panel kit, a 12v marine battery, and an power inverter you should be good to go for a backup situation. If you wanna run off that rig 24/7 get 400watts of panels, since they only collect energy about 35% of the time (peak daylight hours).
Watts / Volts = Amps per hour
80watts / 120 volts = 0.67 Amps per hour
A $90 marine battery usually has around 600 CCR (cold cranking amps). To convert CCR to Amp Hours, multiple CCR by 0.7, so a 600 CCR marine battery is 420 Amp Hours.
420 AH (battery capacity) / 0.67 amps per hour (your draw) = 626 hours (26 days) of capacity. No need for a $2000 power wall. Get a 100watt solar panel kit, a 12v marine battery, and an power inverter you should be good to go for a backup situation. If you wanna run off that rig 24/7 get 400watts of panels, since they only collect energy about 35% of the time (peak daylight hours).