Whats-n-Watts
New Member
Hello all. I had great sun today and decided to hook up some pv and see how it did. I have 3*300w pv in series feeding a 100A/100v Mppt controller on 2 parallel lead acid 12v 66ah interstate deep cycle marine batteries (just for testing).
PV Specs:
ISC 18.1A
Voc 22.1 V
Imp 16.5 A
Vpm 18.2 V
With peak hours direct sunlight, zero clouds, aand 100 percent correct.angle for my location in January.
I am only seeing 10 Amps max on the controller. Is that the MPPT lowering amps? Second question is that at full charge I connected a 150 watt 16 amp heating element to the battery and the 900 watts of PV could not keep up so the battery voltage dropped slowly and would not recover to full charge unless I disconnected the load.
So 900 watts of PV can't handle a 150w load? Yep that's ridiculous so could anyone explain what is going one?
Many thanks in advance!
PV Specs:
ISC 18.1A
Voc 22.1 V
Imp 16.5 A
Vpm 18.2 V
With peak hours direct sunlight, zero clouds, aand 100 percent correct.angle for my location in January.
I am only seeing 10 Amps max on the controller. Is that the MPPT lowering amps? Second question is that at full charge I connected a 150 watt 16 amp heating element to the battery and the 900 watts of PV could not keep up so the battery voltage dropped slowly and would not recover to full charge unless I disconnected the load.
So 900 watts of PV can't handle a 150w load? Yep that's ridiculous so could anyone explain what is going one?
Many thanks in advance!
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