D Yuniskis wrote:
Hi,

I've rescued several small PV panels along with a pair
of gel-cels from an electric wheelchair that still have
useful life. I'd like to put together a charge controller
to run the irrigation pump "for free".

Any pointers to suitable designs? The PVs are small
so Isc is on the order of 100-200mA (though I may
double that)

What is the power requirement of the "irrigation pump"? The pumps I've used
wouldn't run long off of a couple wheelchair batteries.