Changing solar controller - MPPT vs PWM

[Boringfrog]

@Lenny HB
Taken from this site: https://www.photonicuniverse.com/en/how-to-choose/solar-charge-controller/

"MPPT controllers are the most efficient and powerful controllers that we offer, but they should only be used when the solar panel voltage is much higher than the battery voltage"

 

[Lenny HB]

MPPT controllers are the most efficient and powerful controllers that we offer, but they should only be used when the solar panel voltage is much higher than the battery voltage"

That applies to any type of regulator, a battery need to get up to 14.2v to be fully charged (14.7 for AGM ) to achieve that the regulator needs an input if 16 to 17 v, an unloaded a solar panel will give out approx 21v dropping to 17 under load.