Re: HP 29-C Message #3 Posted by David Smith on 14 Aug 2002, 5:02 p.m., in response to message #1 by Hennie Pool
You can replace the cells in the pack with AA Nicad or NiMH cells. The NiMH cells have a much larger capacity, are more enviromentally friendly, and don't have the "memory effect" problems of NiCad cells. They take more time to charge than the older Nicads (directly proportional to their greater capacity). The old Nicads were around 600 maH. NiMH cells can be found from 1200-1800 maH.
One thing to consider is that the HP29C is the most fragile calculator HP ever built in terms of what can happen if it is connected to the AC charger with a bad battery pack (or no battery pack) installed. If at all possible, charge the batteries in an external charger or a different Woodstock series machine.
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