XM757 battery box fixings

[cranetruck]

The battery box is getting full treatment, with insulation, heating and Chargetek 500 maintainer.

Some parts are near impossible to find for this vehicle, so the copper tubing for heating is home made and the insulation comes from a GI polyethylene sleeping mat.

 

[maddawg308]

That's different - what exactly is the copper tubing for? Is the engine heat used to keep the batteries warm in the cold? Is it constant heat, or can the battery heater be turned on and off? Was this a stock item, or are you making "improvements"?

 

[Crash_AF]

Well, since he has the fuel burning heater installed, I'm betting it's like the arctic kit and the engine and battery box are plumbed into that.

Later,
Joe

 

[gimpyrobb]

I like the slave cable reciever mounted on the box. Is that stock?

 

[ida34]

Must be good weather for Bjorn. The difference between him and me is he still makes time to take pics and make posts. I always work all the way through and then say to my self "I should have taken some pics." Keep up the good work. It really looks like you have kicked it into high gear.

 

[cranetruck]

The tubing is for heating the batteries using coolant (from the coolant heater) and the slave recepticle is stock.
Batteries actually like to be cold, they live longer in a cold climate and die fast in the desert heat. The heating is only required to provide starting power, so it's only heated for 15 minutes to 1/2 hour prior to starting the engine. The coolant heater must be off when engine is running.

This vehicle has space and "knockouts" for both a crew compartment heater and a coolant heater, both fuel burning. A "hot water" heater was never used.