Stupid battery and solar questions
I figure I am going to have a lot of them, so I better put all in one thread :B. My situation: - I mainly want solar for running residential freezer and fridge, maybe also for charging my shave ...
Forum Discussion
65 watts = 6.5 amp-hours. (allowing for inverter inefficiency).
6.5 ah x 12 h = 78 amp-hours.
xxxxxx
5 amps @ 120 volts = 600 watts
600 watts = 60 amp-hours
60ah x 12h = 720 amp-hours
Total of the two is about 800 amp-hours.
Since we don't wish to go below 50% you need 1600 amp-hours of battery bank
The jars you are considering are about 135 amp-hours when new. So you need 12 batteries.
The other solution is a more efficient freezer.
6.5 ah x 12 h = 78 amp-hours.
xxxxxx
5 amps @ 120 volts = 600 watts
600 watts = 60 amp-hours
60ah x 12h = 720 amp-hours
Total of the two is about 800 amp-hours.
Since we don't wish to go below 50% you need 1600 amp-hours of battery bank
The jars you are considering are about 135 amp-hours when new. So you need 12 batteries.
The other solution is a more efficient freezer.
Naio wrote:
My current freezer is an Edgestar medical freezer, 1.8 amps, 65 watts, according to mfr's specs. But an online calculator tells me that 1.8 amps AC is 220 watts. ???
I don't have specs on a second freezer, but online numbers say they are around 3-7 amps, probably 5 amps.
Do I need 4 of these 135aH batteries? More?
