Can someone help check my calculations for number of solar panels and batteries?
I currently have:
1x 285 watt panel
1x charge controller
3x batteries wired in parallel (total of 291 Ah capacity or: 291W *12V= 3492Wh
I’m running IR lights and security cameras off of 12V so no need for an inverter. I estimate that I’ll be pulling about 16A constantly or at 12V (16A*12V =192 watts or 192 watts * 24 hours = 4608 watt hours required).
This means my demand is more then my capacity, so should I should increase to 4 batteries in parallel giving me a capacity of: (4 X 97Ah each battery) *12V= 4656 Watt hours.
Solar Panel Power Output:
(one 285 watt panel) * (5 hours of sun) * (.66) = 940 watt hours produced.
Since I need 4656 Watt hours from my calculation above, that means:
4656 watt hours capacity needed/940 watt hours produced from one panel = 4.9 panels (round up to 5 panels)
So it looks like I need 5 panels and 4 batteries in parallel. Do those calculations make sense?