Critique proposed solar battery upgrade
Currently have a Jayco hybrid (Jayfeather 26L) but moving to a Denali 5th wheel in the spring (2012 DE324LBS). Currently have 4 Trojan T125’s with 600 watts of solar, with a Kisae 2000 watt pure sine...
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For that size system I will suggest a residential fridge and lithium batteries.
Running an absorption fridge on electric is a huge power hog and 3x the electric power of a residential.
Lithium is going to seem like a leap. However half your solar is going to be wasted on absorption time with the amps tapering off to nothing with the AGMs. Ok they are somewhat better than the flooded cells. However lithium will absorb all the solar you can produce right up to the point of full.
Also as you get into the 1 kW solar zone consider going 24 volts on the main battery and inverter. This cuts amps in half and lets everything run more efficient. Small DC/DC converter will supply 12v power to the accessories and controls.
That is a bit of a leap in several areas... think about it.
Running an absorption fridge on electric is a huge power hog and 3x the electric power of a residential.
Lithium is going to seem like a leap. However half your solar is going to be wasted on absorption time with the amps tapering off to nothing with the AGMs. Ok they are somewhat better than the flooded cells. However lithium will absorb all the solar you can produce right up to the point of full.
Also as you get into the 1 kW solar zone consider going 24 volts on the main battery and inverter. This cuts amps in half and lets everything run more efficient. Small DC/DC converter will supply 12v power to the accessories and controls.
That is a bit of a leap in several areas... think about it.
