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...
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Good points. Intention is actually to use just the gizmo with no controller. Panel-gizmo-battery. The gizmo is a controller in its own way. Reviewers of the 12a model say it works as a solar controller, but no details given on panel specs.
Ok to keep the input voltage below 32v from the 37v panel, we need voltage drop which requires current, so now we need a Standard Operating Procedure (SOP) to first connect to a load (low battery) and then connect to the warmed up panel? (I don't have a 12v panel anymore)
But then the problem arises as the battery nears full and current has tapered.
There is a 36v max limit mentioned above the 32v. The 37Voc panel is at 34v from heat within a couple minutes of being in the sun. So right on the edge of disaster between 32 and 36.
I suppose if you could run a 230w panel from a $13 gizmo, everyone would be doing that instead of buying $300 controllers :) Or else--"they" who sell those $300 controllers don't want you to know it is just a $13 gizmo! :)
Ok to keep the input voltage below 32v from the 37v panel, we need voltage drop which requires current, so now we need a Standard Operating Procedure (SOP) to first connect to a load (low battery) and then connect to the warmed up panel? (I don't have a 12v panel anymore)
But then the problem arises as the battery nears full and current has tapered.
There is a 36v max limit mentioned above the 32v. The 37Voc panel is at 34v from heat within a couple minutes of being in the sun. So right on the edge of disaster between 32 and 36.
I suppose if you could run a 230w panel from a $13 gizmo, everyone would be doing that instead of buying $300 controllers :) Or else--"they" who sell those $300 controllers don't want you to know it is just a $13 gizmo! :)
