Long term battery concern

[cyrille de brébisson]

Hello,

We did try to use commonly available batteries for the HP Prime, however, it is likely, as you pointed out, that none of these batteries will be available in 30 years and that all the "old" bateries will be long dead...

Unfortunately, the options are rechargeable batteries or alcalines (which most likely will be still here in 30 years).
Alkalines are relatively bulky and result is much large devices, which is one of the 2 reasons why Prime, as a flagship product, moved to that type of batteries. (the other reason is that with the Prime power consumption, alkalines would be short lived and need constant replacement).

Of course, it is always possible to power the calculator using a 3.6V power supply or 5V USB connector.

Cyrille