heavenorbust
New Member
Hey all, you folks were so helpful with my last snafu, I thought you might be able to help me with another question.
Today I installed a 40a DC to DC charger for my solar battery bank. I tested it out with the batteries down about 10 amps, it worked flawlessly gently stepping down the charge level as the batteries were topped up. For context: I have a 500ah lithium battery bank wired in parallel fed by two 40 amp charge controllers and (now) a DC to DC charger. These batteries are separate from the "house batteries" which are two 6v 200ah regular AGM batteries wired in series. I use the 500ah battery bank for powering the 110 in the coach with a 3000w inverter. I assume the 110v system when connected to shore power (or my inverter) also charges the "house batteries", but I have not confirmed this.
My question is this: Assuming the 110v system charges the house's 12v system, wouldn't that create an infinite power loop where the 110v system is charging the house's 12v system which the DC to DC charger picks up and feeds back into the 500ah battery bank, then again back out to the 110v on and on? Would that even matter if it did?
Today I installed a 40a DC to DC charger for my solar battery bank. I tested it out with the batteries down about 10 amps, it worked flawlessly gently stepping down the charge level as the batteries were topped up. For context: I have a 500ah lithium battery bank wired in parallel fed by two 40 amp charge controllers and (now) a DC to DC charger. These batteries are separate from the "house batteries" which are two 6v 200ah regular AGM batteries wired in series. I use the 500ah battery bank for powering the 110 in the coach with a 3000w inverter. I assume the 110v system when connected to shore power (or my inverter) also charges the "house batteries", but I have not confirmed this.
My question is this: Assuming the 110v system charges the house's 12v system, wouldn't that create an infinite power loop where the 110v system is charging the house's 12v system which the DC to DC charger picks up and feeds back into the 500ah battery bank, then again back out to the 110v on and on? Would that even matter if it did?