mppt vs pwm

You're only at the maximum power point of the V-I curve during bulk. At that time the battery can take a lot of current. Once you get into absorption mode, the battery can't handle high current. The mppt controller now outputs a fixed voltage, say 14.4V. The operating point of the V-I curve is no longer at the maximum power point.

mppt has a slight advantage over pwm only in bulk mode. There's no advantage in absorption or float.

BFL13 wrote:

Anyway, yes we have a communication problem somewhere here :)