pianotuna wrote:
Hi,
Buy a controller that has:
1. a temperature sensor on the battery bank
2. a voltage sense wire
3. adjustable voltage set points
I'd stick with pwm right up to 500 watts, beyond that and I'd go MPPT. At 1000 watts I'd switch to a 24 volt battery bank.
+1
I use 400 watts as the point at which to consider MPPT. Ours is PWM and because of a panel failure we will go from 280 watts to 360 watts.
PWM has always been fine for us but we tend to be on the conservative side. A point to keep in mind, the battery(s) determine how much current they can accept so MPPT may not be the best choice.
