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:
Very interesting. For the same price, with this gizmo you get 60v input limit compared with the actual Eco-Worthy MPPT controller's 42 or 45v limit, but without the MPPT if a solar panel is the input.
This would let you operate (with buck but no MPPT) two 23v Mono panels in series where the Eco-W is maxed at two 22s (Poly) and could go overvoltage and fry with those in the cold. The Eco-W works well with a single panel up to about 250w which has the Voc under 40v.
The further you go with higher panel voltages the closer you come to an updated Shunt/on-off controller which does very slow and varied PWM.
http://www.flexcharge.com/Charging-Algorithm-Explained.html
http://www.flexcharge.com/NC25A-Product-Info.html
In an RV situation, the on-off cycling will drive you nuts with its loud clicking/clacking.
