so I'd been worrying my 245W Kyocera panel was a dud, because every time I hooked my drill to it and pulled the trigger, it (the drill) just made a barely audible high-pitched squeal and the voltage dropped from the nominal 36V open-circuit reading to zero.

so today I took it out into full sunlight, and tried again. not only did the drill start merrily running, the voltage reading climbed up, up, from 36 to 45, 55, 70, 80, even approaching 100. it fluctuated, for sure, but the longer I had the drill running the higher the peaks went. I don't know how to explain this. I stopped because I was afraid something was going to fry at those voltages, after all the drill is only rated for 18V.

Back to blog or home page

last updated 2014-04-12 14:26:15. served from tektonic.jcomeau.com