HP-32E Advanced Scientific Calculator - my first Spice machine

[jebem]

(11-15-2016 10:51 PM)Dieter Wrote:  Back in the days of the Spices series, around 1980, there were no 700 mAh NiCds. The regular capacity was 450 mAh, later maybe up to 500 mAh. So with a decent 2000 mAh battery you now can expect 4x the original operating time.

Hi Dieter,
Well, I couldn't find information on what battery capacity HP used on the Spices, so I assumed it were the common 700mAh considering that my calculator was made in 1980 week 34.

I worked with AA NiCd cells in early 80's having 700mAh for memory backup systems in mini computers, and in mid 80's we had 1000mAh manufactured for professional applications, for example by Panasonic.

But on second thought the Spice design began before 1980 and they have used the existing 70's technology, so most probably they have used the 450mAh models.

Cheers,
Jose