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12 volt fan battery draw?

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How long would a cheapo walmart 12 volt fan run on two deep cycle 12 volt batteries?

The reason I ask is that I have a heater for the trailer, but it does not have a fan, so the bunks on top get really hot while I freeze down low. Would the batteries run out in one night. I plan to be out for two nights this weekend with the kids and do not want to freeze my :bonk: off.

Thanks.

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and your battery's reserve capacity . every battery is different , its the amp hours your concerned about .

it should say on the top of the battery

and amperage draw from the fans .

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My guess is it will work fine. Let's say the fan is 2 amps. If it's on for 10 hours then that is 20 amp-hours. Two deep cycle 12 volt batteries in good condition should be 150 to 250 amp hours depending on the size of the batteries.

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OK, so we went with the Genny as we were the only one's at the track over night.

I insulated the enclosed trailer last winter and have not had a chance to try it out until now. Holly hell that thing was hot. We had a little cheapo Walmart fan/heater that kept the heat at a constant 25 degrees C. Not sure what that is in F, but it was a little to hot, had to open the vent for a bit to let it cool down. It was just below freezing outside as well, so I guess I did a good job.

Last Fall we went to a race with the trailer uninsulated and we freaking froze all night:banghead:

We did have the inverter running all weekend and a laptop running off it as the little guy did not feel like riding much and the batteries lasted well, so I would think that just a 12 volt fan would be just fine. Thanks for the links and tips guys. Much appreciated.

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