RE: HP programmable calculator batteries

["Marc" marc@xxxxxxxx]

Hi

I've done the same thing to an old Toshiba laptop battery.
A new one was worth twice what the laptop was worth.
Cut it open, popped out the old batteries.
New batteries were a bit smaller. Hot-glued in 8 batteries soldered together
along with the bi-metallic 'cut-out'.
Fitted a 12v plug to the front of the battery to allow charging from a car
cigarette lighter and presto.
Only got about 1 hour from the batteries, but being able to drive the
charger around the countryside was a bonus.

Re-chargeable batteries are generally only 1.25v per cell - not 1.5v.

Marc



-----Original Message-----
From: owner-xywrite@xxxxxxxx
[mailto:owner-xywrite@xxxxxxxx] On Behalf Of flash
Sent: Thursday, 2 March 2006 4:32 a.m.
To: xywrite@xxxxxxxx
Subject: HP programmable calculator batteries

Phil White wrote that his HP-65 card programmable calculator's batteries
are kaput. I'm not sure what model that was, but if it's like my HP-25
programmable calc., you can keep it running on replacement non-HP
batteries. Just cut open the HP battery-holder with a razor, pop out the
original cells, and put in any good quality rechargable 1.5v AA
cells. Then superglue the battery-holder back together. I did.