How many HP-25Cs have we lost?

[John Garza (3665)]

I was in a similar position, All my 25C's work and I was reluctant to sacrifice one for the Panamatik upgrade. I did have a 67 with a main logic board problem so I opted for a teenix replacement. Works great.

As for power, I just remove the center plastic bar in the battery pack with an Xacto knife and I can slide in AA Alkaline or rechargeable batteries then install the battery pack in the calculator as designed. For rechargeable charging, I always remove the battery pack and use the external woodstock recharger cradle. If you don't have one, it would be pretty easy to make.

-John