The solar battery tender I acquired ( Canadian Tire 1 watt Powersports Solar Charger, product #11-1894-0 ) seems to lack any voltage regulation and a quick meter test shows the output voltage fluctuates from 0 to upwards of 19 volts. Is this a problem and should I not be adding some circuitry to regulate the voltage output? And, do I not need to make it directional?
The product features list implies that “Built-in overcharge/discharge protection” is built in, but I can’t see anything here other than a melt down fuse to support that claim.
…input would be greatly appreciated, before I go and cook some selenium thx:)