Forum Discussion
pianotuna
Sep 21, 2014Nomad III
Hi,
Yes, in theory you can do it. I have done so in my RV.
However:
2000 watts @ 120 volts = 16.7 amps
2000 watts @ 12 volts /0.87 (for inverter inefficiency) = 191.6 amps (no allowance for peukert--which would make things even worse).
Two six volt batteries can't support that kind of a load. They will unlove you at a drain of 191.6 amps per cell.
Two AGM 12 volt jars might be enough for brief use of a microwave. Drain would be 95.8 amps per cell.
I chose to use 7 group 29 batteries so the load per cell @ 2000 watts is 27.4 amps.
The fridge will need to be set to propane.
The OEM converter may be left in place but should be disconnected. Keep it as a back up.
What method would you use for recharging?
Yes, in theory you can do it. I have done so in my RV.
However:
2000 watts @ 120 volts = 16.7 amps
2000 watts @ 12 volts /0.87 (for inverter inefficiency) = 191.6 amps (no allowance for peukert--which would make things even worse).
Two six volt batteries can't support that kind of a load. They will unlove you at a drain of 191.6 amps per cell.
Two AGM 12 volt jars might be enough for brief use of a microwave. Drain would be 95.8 amps per cell.
I chose to use 7 group 29 batteries so the load per cell @ 2000 watts is 27.4 amps.
The fridge will need to be set to propane.
The OEM converter may be left in place but should be disconnected. Keep it as a back up.
What method would you use for recharging?
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