Forum Discussion
BFL13
Oct 12, 2014Explorer II
ken white wrote:
When the MPPT controller is in MPPT mode, it is delivering maximum panel power to the batteries/load - the batteries/load are demanding more power than the panels can produce.
When the controller is in PWM mode, the panels have excess power that is not being utilized by the batteries/load.
Adding another device will reduce the power available to the batteries/load due to the devices energy conversion process - efficiency.
Let the MPPT controller do its thing and the batteries should be charged as fast and efficiently as possible...
My scenario is with an ordinary PWM controller, not an MPPT which already has a buck thing in it.
I want to get more amps like the MPPT still does in PWM by using its buck thing. I got the notion that all these buck things on ebay are what is in an MPPT controller, so why not just use one with the cheapo PWM and get more amps from a panel (instead of buying a second panel)?
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