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NinerBikes's avatar
NinerBikes
Explorer
Nov 18, 2014

Testing the new to me NON MPPT 20 amp Charge controller

I ordered this on Amazon, it came from China. While it is stated that it is MPPT, I bought it with only the intentions of running it in it's PWM mode. What I have found it that this unit pretty muc...
MrWizard's avatar
MrWizard
Moderator
Nov 18, 2014
The best way to test
uses two amp meters or two watt~ power meters
One between the panel and controller
One between controller and battery

Amps well be higher on the controller output side than the panel input side
Watts will be very close , but slightly higher on the panel input side, the difference will be the power used by controller

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