Eco-worthy 20a MPPT controller
Last month I purchased the Eco-Worthy 20a MPPT controller from their website for $89 plus $24 shipping. Right now it says $102.50 and free shipping. You can see them on ebay with free shipping and if ...
Forum Discussion
Thanks for the testing. The 0.1A gain compared to direct charge does seem quite low; especially when battery is at 12.5V. Is the controller's operating current high that it impacts your measurements? Perhaps using a panel that's greater than 100W will provide better results.
Sounds like there's a relay in your controller. It may be measuring open circuit voltage of the panel. Time to pull out the scope.
Sal
Sounds like there's a relay in your controller. It may be measuring open circuit voltage of the panel. Time to pull out the scope.
Sal
DSchmidt_2000 wrote:
I'm a bit disappointed to not have a much greater charging amps (only ~ 0.1A greater) given the delta between the battery and the panel is about 4V. Thinking that I may just be so low in power that I'm not in a high efficiency zone for this MPPT controller.
Putting my ear to the MPPT controller, I hear a regular 'ticking' noise. Will at some point drag out my digital scope and take some measurements to see what is going on.
