HP97 battery pack rebuild

[rprosperi]

So, my totally unsubstantiated, off the top of the head without data to support it reply has been shown to be exaggerated. Thank you Hans and Dieter for your thorough explanations.

I guess my basic point was that yes, NiMH cells, which are generally known to be of higher capacity and often self-discharge better, will work fine, but the charge time is often much longer (due simply to charger being designed for older, lower capacity cells), which may be undesirable, depending on how the anticipated use/charge cycles will be. As such, I should have just said it that way.

I am frankly surprised it is only in the range you calculate; subjectively it has seemed longer than that, but this is on other devices. Maybe someone that does this (rebuild a Topcat battery pack with NiMH cells) could test it and share the results here.