I just built a couple of packs for my X-5. The question is how do I insulate the positive and negative sides of the batteries from the carbon fiber belt tunnel?

I would recommend doing something like that to protect the battery from shorting and possibly damaging your electronics in some freak accident.

DOing things like that will never hurt.

mike

Silicone- I've used it between the cells to hold the together and on the ends to insulate them also.

Plastic dip.
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