MPPT solar charge controller recommendation?
So I've got some cash now to put into my new to me Lance, and I've decided to build my own 200watt system from scratch rather than purchase an all inclusive kit. I'm going to use cross bar roof rack i...
Forum Discussion
Boatycall wrote:scrubjaysnest wrote:
MPPT is a waste of money for only a 200 watt system
And why would that be? "P" means nothing if you don't convert and regulate the "I" and the "E". (We'll see how many get that).
MPPT is even more important on a low-wattage system to convert higher PV voltages into regulated 12v amperage to get the most out of your limited space on a TC for panels.
A PWM is nothing more than a fancy high speed on-off switch. If your panels are 20v, you send 20v to your batteries at a lower amperage than you would have if it had been down-verted to 14v. You waste the additional voltage rather than converting it to amperage.
20 volts to the batteries?
