On Tue, 10 Jan 2006 22:27:41 -0500, Larry wrote:

Hmm...1500 watt heater, only 5000 Btu. 1500 watts divided by 12V = 125A
if the conversion to 115VAC was 100% efficient, which it's not. 440 AH
is the rating at a 10 or 20A load, not 125A, which would, probably, boil
the electrolyte into steam in short order, the lead melting from the
intense chemical reaction (ever see a car battery explode?).

==========

Larry, you have ridden that horse into the ground and beyond.

He is talking about a DIESEL heater. The 12 volt power is most likely
for a small fuel pump and/or fan.

No lead will be melted here.