What law on batteries

billybob9billybob9 Registered Users Posts: 141 ✭✭
Watt's Law I=P/E

So I took my Load Tester and clamped it onto my 12v battery ( Two 6 volts ) terminals. Then connected my 100W solar panel to the terminals. With full sun for 8 hours I EQ my batteries. 5 year old batteries why not give it a shot. Big time improvement ..


  • PhotowhitPhotowhit Solar Expert Posts: 5,108 ✭✭✭✭
    Not sure what you think you are showing?

    The batteries are charging, Not sure why you would use the load tester to measure the voltage while charging?
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, 660 ah 24v ForkLift battery. Off grid for @16 of last 17 years. Assorted other systems, and to many panels in the closet to not do more...lol
  • billybob9billybob9 Registered Users Posts: 141 ✭✭
    The charge of the batteries were 12.3v so the 15v shown on the load tester is the difference that I monitor as it's charging. With the caps off the batteries I can see the bubbles and tell which cells are worst.
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