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OfflineMontyRev
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Registered: 01/22/05
Posts: 96
Last seen: 10 years, 8 months
Battery Powered Heaters?
    #3700559 - 01/30/05 01:53 AM (11 years, 10 months ago)

i was just wondering if their are battery powered water heaters out there?
and if someone could help me out with looking for one....


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InvisibleMagashM
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Registered: 07/25/02
Posts: 5,875
Loc: Near Hilo
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Re: Battery Powered Heaters? [Re: MontyRev]
    #3700602 - 01/30/05 02:01 AM (11 years, 10 months ago)

Where did I hear this before?  :tongue: :nutkick:


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OfflineMontyRev
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Registered: 01/22/05
Posts: 96
Last seen: 10 years, 8 months
Re: Battery Powered Heaters? [Re: Magash]
    #3700692 - 01/30/05 02:26 AM (11 years, 10 months ago)

hmmm
maybe the chat eh?


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OfflineLaughingJim
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Registered: 09/30/04
Posts: 465
Loc: USA, ( CT )
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Re: Battery Powered Heaters? [Re: MontyRev]
    #3701891 - 01/30/05 12:26 PM (11 years, 10 months ago)

Here is the deal...

A 15 watt heat source is a minimum to bring 75F to 85F in a 3 cubic foot area. That is 15 watt hours for 24 hours... a car battery holds about 30 hours of operation at 15 watts = 450 watts.

It will take about 1350 watts to charge that 450 watts back into that battery. (NOTE: if you drain a car battery to 0 volts... you have just killed it, it will only charge back up to 10 volts, and give you 45 watts of power.)

Simply, Yes... any light bulb is a great heat source. Pick your wattage. Since lights are only 10% efficient, tht translates into 90% efficient heat. Ceramic heaters are only about 80% efficient unless you use a fan with the heater.

NOTE: you would need 40 D batteries to equal the power in one car battery.

Final note... Car batteries give off explosive gasses when discharged/used.


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