Truck charge camper battery?
I tried a search on this but I didn't come up with anything, maybe wrong search words :) Anyway, for the past couple of years my fridge protocol has been to plug into shore power the night before we l...
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On 12 volts DC, my dometic in my Lance takes 15 amps, while on 110 volts, it only takes 1.6 amps.
If you have the typical Lance plug, and a battery isolator in the camper, the battery isolator won't let the truck battery get below a certain voltage, so your truck can start. Battery isolators, however, have been known to fail over time, or have marginal voltage settings, thus draining your truck battery and not allowing you to start the truck after a while.
That size solar panel might be marginal, depending on the sunlight available, to keep the camper battery charged.
If you have one battery on the camper, like I do, the 100 amp-hour battery on mine will work for 2-3 hours with the camper unplugged, but eventually it will be drained by the fridge, depending on how much the fridge compressor works.
The truck charges it while driving.
I'm not sure how many batteries the Lance 921 has. If it has two with your 100 watt solar panel, it might be enough for a whole day unplugged.
I'm planning on adding some solar too, but I'm thinking along the lines of 200 watts of solar, which is about 16-ish amps at 12 volts. I dont think a 100 watt panel is enough.
If you have the typical Lance plug, and a battery isolator in the camper, the battery isolator won't let the truck battery get below a certain voltage, so your truck can start. Battery isolators, however, have been known to fail over time, or have marginal voltage settings, thus draining your truck battery and not allowing you to start the truck after a while.
That size solar panel might be marginal, depending on the sunlight available, to keep the camper battery charged.
If you have one battery on the camper, like I do, the 100 amp-hour battery on mine will work for 2-3 hours with the camper unplugged, but eventually it will be drained by the fridge, depending on how much the fridge compressor works.
The truck charges it while driving.
I'm not sure how many batteries the Lance 921 has. If it has two with your 100 watt solar panel, it might be enough for a whole day unplugged.
I'm planning on adding some solar too, but I'm thinking along the lines of 200 watts of solar, which is about 16-ish amps at 12 volts. I dont think a 100 watt panel is enough.
