Converting a 41C to run on CR2032‽‽‽

[jonese]

My problem with cell phone batteries is that they are short lived, they're here a year or two, then gone the next with different form factors.

That's my main gripe with the Prime. One day, that HP format (aka the Samsung Galaxy S3 battery) will no longer be made. Then what? Seriously. What do you do when the battery format (and perhaps chemistry) are no longer being made? Custom design your own battery?

No doubt, the HP Prime hardware can surpass the lifespan of the S3 battery format.

AA's have been around for MORE than 100 years and no reason to think it's going away anytime soon. A slight change in battery voltage between Alkaline, NiCd, NiMH chemistries for sure, but basically the same drop in format.

Sure, energy density probably plays a major factor in battery selection. But I'd rather have a working calculator in 10 years with an available power source at the cost of a slightly larger device to hold the 4x AA's.

I'm off topic, sorry.