Solar Panel Ratings(adsbygoogle = window.adsbygoogle || []).push({});

When I measured volts and amps this is correct. When it is connected to 12 volt battery I get 13 volts and 3.5 Amps when it is charging under Ohm's law this would be 45.5 watt are my meters off or am I losing current some where or am I not understanding this correctly as I thought if it is rated 100 watt you could run a 100 watt X 12 volt light bulb

- Maximum power (Pmax): 100W
- Voltage at Pmax (Vmp):17.2V
- Current at Pmax (Imp): 5.81A

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Solar Panel Ratings

Have something to add?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**