Buck Your Solar with a Mex Gizmo?
Mex has a thread about equalizing with this sort of gizmo http://www.amazon.com/DROK-Constant-Current-Converter-Regulated/dp/B00E8D7XYG There are many of these on ebay with different specs, so t...
Forum Discussion
BFL13 wrote: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)?
Maybe design a solar panel from scratch, portable, aimable, that maximizes amps and minimizes voltage loss being burned off at the charge controller. Start out with a maximum of 16.0V at Max amps, in the design of the solar panel? Then run it into the PWM charge controller of your choice. Run it straight when you want to equalize charge your battery.
Keep in mind, the device won't make much juice to charge a battery unless in direct sunlight, there's not a lot of margin in this design for shade or cloud cover.
