The battery pack consists of two rows of 6 x 2v. It's still only a 12v pack (two 12v batteries that are not even in parallel) .
It is NOT a 24v system!
There are separate leads to each battery (r+, blk- and w+ grn-). Two white wires for the heating element, and two brown wires for the temp sensor.
Powering the unit is a simple task (12v 8ah to red+ and blk- and a 12v 8ah to white+ and green -).
The kicker is that you can extract the heating element of temp sensor from the epoxy. Replacing the two items shouldn't be difficult if we can sort out the specs on them.
I fired both of mine up this evening (my neighbors are freaking that I was running a jet engine, LMAO). Plus it was like 95 here today, so I may be nuts but I'll be damned if Texas freezes again and I'm not ready). ;p
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Here's the battery guts. You can see I simply clipped the leads and bypassed to my two 12v 8ah Interstates. The temp sensor and heating element are technically still there (just not on the operational batteries). The orange divider running down the center is the heating element.
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And here are the leads. Red, big white are pos; blk and grn are neg; the brown are to the temp sensor (it monitors the batteries ambient temp and tells the controller to fire up the heating element as needed); and the two small white leads go to the heating element itself.
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