24V panels on a 12V system
I have access to several 24volt panels and would like to install them on my MH. The question is do they make a controller that will accept 24v and send out 12v to charge the battery's.
Forum Discussion
KD4UPL wrote:Johnny G1 wrote:
C40 Xantrex controller 12- 48 volts and a good controller.
This model of controller, while excellent in it's own right and nearly indestructible, is not an MPPT model and won't work for matching higher voltage panels to a 12v system.
Yep. PWM controllers can be 12/24/48V, but this merely means that they will automatically recognize the battery input, i.e. can be used on 12, or 24, or 48V battery bank on the condition that the array output is the same as the battery bank. Ex, for 48V bank it would require 48V nominal array, i.e. 2*24V panels in series. It won't convert 24V panel output (or 100V of a few panels in series) into 13V charging voltage for 12V bank.
