practical

Transform a 25-Watt Semi-Flexible Panel into a Practical Battery Charger

Sunlight may be free, but transforming it into usable electricity is not. I learned this back in 1965 when I bought some surplus silicon solar cells from dealer Herbach and Rademan (now H&R Company, Inc.). Those 0.75″×0.75″ cells cost around $2.49 each or $19.30 today according to the CPI Inflation Calculator. In 1975, I used …

Transform a 25-Watt Semi-Flexible Panel into a Practical Battery Charger Read More »

Scroll to Top