How Long Could 100 Amp Hour Battery Power 5 Amp Roof Vent

Question

Question:

Trying to determine if a 12 volt 100 amp hour battery would be enough to run a maxx air deluxe for 8 hours. Unsure how to determine how many hours I can run the fan requiring 5amps.

asked by: Rick H

0

Expert Reply:

Since the fan draws 5 amps that would mean that a 100 amp hour battery could power it for 20 hours. So 8 hours wouldn't be a problem at all. Basically you take the amp hours of the battery and divide it by the power draw of the accessory.

expert reply by: Jameson C

0

Answer 1

The best way to test this out is by applying 12V power to the motor directly so you can see if it operates correctly outside of the control module (see attached). If everything works properly when you've bypassed the control module then…

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Answer 2

14.2-14.4 volts will not destroy the MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat #MA00-05100K, however anything over 13.8v can cause the fan to shut down on the limit switch.

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Answer 3

The MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat item #MA00-06200K uses up to 5-Amps to operate when running and up to 9-Amps for startup. So probably between 90 - 100 hours if it was the only thing running and you left it on.

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Answer 4

I went out to the warehouse to measure replacement crank handle #TJSC-24-HD. From the tip of the socket end to the first bend it is 13-3/4 inches. The overall length is 27-3/8 inches.

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Answer 5

The MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat #MA00-05100K that you referenced runs on 12 volts and draws 5 amps max. If your DC outlet can handle 5 amps then this would work but it would be right at the limit.

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Answer 6

That was a problem in older versions of the MaxxFans but the current ones can handle more voltage variances without it causing any problems so you don't have anything to worry about.

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Answer 7

Good morning, Don. The 3/4" wide butyl tape is exactly what we recommend for installing a roof vent such as the MaxxFan #MA00-07000K. We actually sell a roof vent install kit part #344270KITW that comes with sealant, screws and a 30' roll of…

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Answer 8

Your Dometic 57915.531 is a 13.5k BTU AC unit which the Advent Air RV AC Unit #ACDOM135 is the same size and is also designed to replace Dometic units.

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