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Old May 19, 2003, 06:00 PM
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Wrapped too tight?

I've observed the application of traditional cell "wrapping" techniques on Li-Poly packs for quite a while...

I've noticed quite a few modellers use the traditional paradigm of wrapping their Li-Poly "packs" with multiple layers of heat-shrink plastic wrap, or tape, or whatever... (Heat-shrink has a pretty high tensile strength, and will resist expansion even more under heat)

Does this not seem like a very bad thing to do to a cell whose designed failure mode is physical expansion?

I'm not sure if there's test data to support it, but if you constrict the ability of a Li-Poly cell to expand, you will probably create the opportunity for a violent rupture.

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