I have an HP-21 and a 25C. For over 20 years, I've used a slightly modified
battery pack, modified only in that the individual NiCd's are removable and
easily replaced. This was done in about 15 seconds with an Exacto knife. The
batteries are easily exchanged if they go south, but I often use alkaline
batteries if I really need to, with no ill effects yet.
----- Original Message -----
From: "Chuck McManis" <cmcmanis(a)mcmanis.com>
Sent: Tuesday, May 08, 2001 3:03 PM
Subject: WTB/T: hp-21 battery pack anyone?
Well since it appears I'll be holding on to this
calculator, and I've
verified that it does indeed work if I kludge up a battery pack. Does
anyone have a spare HP battery pack I could buy/trade for? It doesn't
particularly matter if the pack is dead, we can rebuild it :-)