So, how would one terminate charging of NiMh batteries when charging with solar panels?
Solar panels produce varying current based on the amount of available light and charging NiMh is usually done with constant sources of current…
To maximize the efficiency of the solar panels, you would want to dump all the varying current into batteries… so how would you know when to stop and switch to trickle charge? The normal methods (negative voltage drop, etc) rely on the constant current.
One could use some temperature based method, but is there anything better? Anyone allready develop an IC for solar power charging? Would a Max712 work well with solar?
Would a super capacitor be useful?
Just some thoughts…