Re: Replacement battery pack for HP45 Message #2 Posted by Dave Shaffer on 3 Aug 2002, 7:33 p.m., in response to message #1 by Richard Hook
I did the HHR-P505 replacement for an even older HP35, and the original charger seems to have no problem putting electrons into the NiMH cells.
The Panasonic cells are prejoined, but you have to bring out their wires to a couple of home-made contacts that take the place of the original battery pack contacts. Make sure you get the polarity correct.
The entire assembly benefits from some strategically placed thin pieces of styrofoam to keep the batteries snug in their new home.
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