Solar-powered roof ,

Matt C. 50°

I designed a simple 15 watt/12 volt solar panel powered attic fan system. Is there a simple way I can add a new or used 12 volt sealed lead acid battery (18 ah) to the circuit so the fan will run at least some time after sun rise. The fan is rated as 12 volt/1.2 amp. I imagine I need another panel to do so because it seems that the system as is has no reserve energy to charge the battery (i.e. P=I*E (15 watts = 12v*E...E=1.25amps)... in other words, there is only .05 amps left over to charge the battery...

Featured Companies & Orgs 

Pledge to do these related actions

Digitize your household, 11°

Digitize your media and clean up space. Scan paper documents and manuals into TIFF or ...

Dry laundry on the clothes-line , 1406°

Instead of firing up the dryer, go old-fashioned and hang your clothes out on the ...

Switch from paper to continuous cloth towels for the office , 21°

Paper towels are more expensive and more harmful to the environment than cabinet towels (aka ...

Follow these related projects

Dustin Krieger

North Carolina, United States