Charge Batteries by Idling Tow Vehicle?
This may be a dumb question, but since every tow vehicle has a generator which is connected to the batteries and they charge while driving, how about hooking up and charging at the campsite while idli...
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Are we talking about trailer battery? If so, - the wire in 7-pin plug from tow vehicle can support 10A only, as I recall.
At that rate, 2*T105 will need 7 hours to bring them from 50% to 80%. Running a truck any longer won't be too smart because the battery acceptance rate drops as it's nearing 100%. So, after you've spent all day to bring it to 80%, you'll have to idle for another day to bring it to 100%, because the charging process slows down.
Solar is perfect for those last 15-20%. If your energy needs are modest, 300W solar on the roof will keep it fully charged on most days, without ever running a generator or truck. As long as there isn't much rain or shade.
At that rate, 2*T105 will need 7 hours to bring them from 50% to 80%. Running a truck any longer won't be too smart because the battery acceptance rate drops as it's nearing 100%. So, after you've spent all day to bring it to 80%, you'll have to idle for another day to bring it to 100%, because the charging process slows down.
Solar is perfect for those last 15-20%. If your energy needs are modest, 300W solar on the roof will keep it fully charged on most days, without ever running a generator or truck. As long as there isn't much rain or shade.
