Re: HP-67 Battery Pack Message #2 Posted by Tom (UK) on 15 Aug 2006, 4:53 a.m., in response to message #1 by Trent Moseley
I have done this, but used NiCads. There should be no problem with NiMH batteries.
I used a sharp craft knife to ease the 2 halves of the plastic appart. The batteries are then coupled together with metal strips. CAREFULLY remove and keep these, noting the way they are connected and the way round the batteries are (take some pictures).
I would use some smaller batteries WITH SOLTER TAGS (get the ones which are the same diameter as AA cells but a bit shorter). You may have to get these via the web or mail order.
Reassemble, you will have to do a neat job as there isn't much room and the battery is kept in place by pressure from the battery cover.
PS I don't recommend you solder to batteries, in hindsight I was a bit silly to do so. Batteries may explode or give off nasty fumes if heated.
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