Re: hp 41c battery pack replacement Message #6 Posted by Garth Wilson on 12 Oct 2005, 4:22 a.m., in response to message #4 by CRT
Mouser www.mouser.com is one of the big distributors in the U.S. that sends thick paper catalogs (1500+ pages) to everyone in the elctronics industry and a lot of hobbyists every couple of months. They have Sanyo NiCad N cells as catalog number 639-N150N.
My 41cx (which BTW includes timer module, built in) goes a year or two on a set of alkaline batteries. Even when it was getting used all day every day controlling automated production testing almost 20 years ago (plus some other work in the late evenings), a set of alkalines lasted weeks. The low-battery indicator goes on when the batteries are down to about 1.2V, which is almost what you'll get from NiCads when they're fully charged. It wouldn't be worth fooling with them, especially since they have a pretty high self-discharge rate, unless you were constantly using the card reader or the optical wand (or both).
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