What type of solar charge controller to purchase? First you need to know a little about their functionality and features but it’s also helpful to do a straightforward comparison of your options. Below we’ve put together a quick look at the pros and cons of both PWM Solar Charge Controllers and MPPT Solar Charge Controllers for you.
The PV input nominal voltage must match battery bank nominal voltage if you’re going to use PWM.
We have not found a single controller sized over 60 amps DC
Can’t be used on higher voltage grid connect type solar panels.
These charge controllers also offer the potential ability to have array with higher input voltage than battery bank
MPPT offer flexibility for system growth
Ability to use higher voltage grid connect type solar panels.
MPPT units are generally larger in physical size.
Using an MPPT controller forces the PV array to be comprised of like photovoltaic modules in like strings.
As you can see in this brief list of pros and cons there is a lot to take into account when choosing a charge controller for your solar system and this can be very confusing if you are new to the renewable energy scene. don’t worry we are here to help if you need and over the next few days we will be adding additional post on how solar works and how charge controllers work