Cheap China Solar Controller Failure
For a couple days been noticing higher than the 14.6 voltage,.....going to 15, and even 15.5,....I knew something was not right. The next day it was showing 16, then quickly went to 17+.......I quickl...
Forum Discussion
At a bare minimum, adding a 100 watt panel for $120, for a total of 3 panels, if roof real estate is a non issue, will yield you 5.5 amp hours. About $22 an amp.
Adding a MPPT is a flat $55 more for cheap Chineseium MPPT currently. How many more amps will that get you with 2 100 watt panels at 11 amps? With 3 100 watt panels with 16.5 amps? Can you get 13 amps with 2 panels and for how long in hours? Can you get 18.5 amps with 3 panels, and for how long on a cold desert morning or evening with MPPT?
What happens to all those peak amps when your panels are laid flat on the roof, instead of portable and aimed at the sun? 60% panel yield in amps instead? 70% panel yield in amps instead?
Damn variables. K.I.S.S works for us non EE types.
Adding a MPPT is a flat $55 more for cheap Chineseium MPPT currently. How many more amps will that get you with 2 100 watt panels at 11 amps? With 3 100 watt panels with 16.5 amps? Can you get 13 amps with 2 panels and for how long in hours? Can you get 18.5 amps with 3 panels, and for how long on a cold desert morning or evening with MPPT?
What happens to all those peak amps when your panels are laid flat on the roof, instead of portable and aimed at the sun? 60% panel yield in amps instead? 70% panel yield in amps instead?
Damn variables. K.I.S.S works for us non EE types.
