Oh No ! I bought a Mppt Solar Controller
I don't believe it ! I bought it and I don't really even want it ! I was sure this would go for more than 12 bucks. Fooled me, oh well. Whats w/ links not working ?
Forum Discussion
Thanks. Not clear to me though. How is that different from PWM? I thought when connected, that the array voltage was the same as battery voltage, which is how the IV curve operates where you get a drop in Isc as battery voltage gets up past mid-13s. Panel Voc is 21v.
I can measure panel voltage at its junction box with panel connected I think, but not Isc. With MPPT controllers, can you get 40v or whatever at the array with it connected and 14v at the battery? How do you know the controller is doing MPPT unless the charging amps are higher than panel Isc?
I can measure panel voltage at its junction box with panel connected I think, but not Isc. With MPPT controllers, can you get 40v or whatever at the array with it connected and 14v at the battery? How do you know the controller is doing MPPT unless the charging amps are higher than panel Isc?
