Lighting

[Hughie]

Not sure where to post this rather off topic question, but thought this might be the right place.
Apologies for being a retard - I just don't understand electrickery.

I want to light a shed with a 12v led light (drawing, I think, 120 mA 0.7w) using a 12v 85 AH leisure type battery.

How many hours use might I expect from a full charge?

Many thanks.

 

[Rob]

Battery Cap  12 * 85 = 1020 WH
Light draws 0.7W
Therefore it lasts for 1457 hours = 60 days

However 120mA at 12v is not 0.7W, more like 1.4W. So it could be half of this time above. Either way, it's quite a while!

Wang this (http://www.amazon.co.uk/Solar-Panel-WeatherProof-ideal-Caravans/dp/B000PTJZ0W/ref=sr_1_8?ie=UTF8) on your roof and you'll be away...

 

[graham]

Hughie, the simple answer is: lots!

& Rob is right, with that on the roof it'll last forever.

 

[Hughie]

Thanks, chaps. That's most helpful and useful. 

 

[cap n chris]

Has UBSS got something similar at the Evil Dead hut for lighting?

 

[wormster]

Given that you are using a GBFO battery and a low drain LED,

I think the answer has to be:

SHEDLOADS :tease: