PWM Solar Charge Controllers

PWM controllers operate at battery voltage; are less expensive; and work well in locations where there is consistent, abundant, consistent sunshine, and economics favor installing more panels instead of more costly “balance of system” components. PWM controllers are simpler, smaller, and less expensive than MPPT controllers, and ideal for use in systems where extracting every last watt of electricity possible from a PV array is not a concern. PWM controllers work best with nominal 36 and 72 cell modules and are often not suitable for arrays consisting of 60 cell modules.