Opening The UL Batter Pack

Joe Jesson (jessonj@CERF.NET)
Wed, 26 Feb 92 19:07:49 PST

I have a dead battery pack (failed in less than 6 months) from
the Ultralight. Usually, one can find an ultrasonic welds on
the plastic case where a sharp exacto knife can open the welds
and remove the individual strapped cells.

But no, I cannot open the case with the exacto knife! I hate
to force and crack the case. Any ideas?

(I realize that Lithium cells can explode so I did'nt try
other tricks like zapping the pack with a short high-current
pulse which works for NiCads)