Today is a good day - an HP-28S saved

[John Keith]

Though 2/3 size AAA NiMH cells seem to work well in the HP-41, I would not recommend using them in the HP-28 for the reason stated above: the battery door. NiMH cells do not hold a charge as long as alkaline cells, and every time the battery compartment is opened to change batteries is an opportunity for disaster to strike.