My HP67 Has Melted!!!

[Don Shepherd]

The exact same thing happened to my 65, the battery door started to melt while recharging. Fortunately, the 65 still worked, but I NEVER charge batts in the calculator anymore. Always use a third party battery recharger.

I too would have had a fire if I hadn't checked. I checked about an hour into recharging. I should note that I never had this type of problem while using the AC charger that came with the 65; I would charge overnight using that one and there was never a problem. The problem was using a USB-based recharger.