hdjim69 wrote:

Hello, I have a 12v dc space heater that I use in my truck when I go
on trips. I only use it during the night (average about 6 hrs per 24
hr period). The heater is 300w. I have it hooked up to a separate
sealed12v car battery which means it's drawing 25 amps! This sucks
the battery dead in no time and it's very hard to find a place to
recharge the battery all the time.

Don't you recharge it from the truck system ?

Does anyone know of a super high
capacity 12v battery that would be better suited for such current
demands? Or a better solution? Motels are out of the question.

Thx
J

You need to get a "Leisure Battery" Â*this is a secondary battery used in
campers/caravans to supply power. Â*Mine is rated 185 Ah and lasts about
12 hours from full charge, but not at 25 amps ! Â*My average draw is
only about half that. Â*Though the fridge takes a constant 7 amps.
You can get much bigger ones. Â*I've seen 330 Ah for sale.

--
Best Regards:
Baron.