12v from 24v Battery Bank ?
With two 12vs in series and the 24v charger on the other two posts, can you draw 12v at the same time as they are being charged at 24v, from the pos and neg of just one of the batts? If so, will th...
Forum Discussion
valhalla360 wrote:
Why do you have a 24v charging system if your draws are all 12v? (or is there something else drawing 24v?)
Assuming this is the long term scenario, it may be better to put in a 12v charging system rather than switching back and forth.
I have the usual 24v solar panel and an MPPT controller for it that bucks the 24 down to 12. My "spare" controller is a 12/24 PWM. Mr Wiz recently lost his MPPT and his spare was a PWM, but he has a 12v array so no problem. I do not have a spare MPPT.
You could run the rig's regular converter for the 12v stuff from the 24v inverter on whole house. The converter takes about 6amps DC at 12v so I suppose that is 3a worth of 24v inverter draw. Then you would not need an additional DC/DC converter, but it might be easier on the batteries to have that.
The one thing that would still need to be wired to tap into the 24 batt for 12 would be your trailer's breakaway brake system.
No idea what the Trimetric would be thinking! :)
On shore power you would need to go back to parallel and 12v bank so the converter could charge them. Back to 24 in series on solar off grid.
