Rngr275 wrote: »
Chris have you or did you have the valves adjusted as recommended in their manual?
BB. wrote: »
I don't know anything about the Brat--But using on a 60 cell panel charging a 12 volt battery bank, the efficinecy is going to be very low--Probably around 50% of the panel's Wattage rating (i.e., a 200 Watt panel will have about ~100 watts of equivalent power to charge the 12 volt battery though the PWM controller)... That may be OK for a smaller battery (i.e., you only need a 100 Watt panel to charge an 80 amp 12 volt battery).
However, using a PWM controller to charge a 12 volt battery from a 24 volt battery--You will probably over current the charge controller--PWM controllers do not have the ability to limit current through them (unless you put a large power resistor between the 24 volt battery and the PWM controller). I would guess that you would fry the PWM controller if you tried this.
I could be wrong--But give Midnite a call if you are thinking of do the 24 to 12 volt battery charging. Normally, a MPPT charge controller would be used for down converting from 24 to 12 volt battery charging (MPPT controllers can limit output current safely/reliably).