Question on 82120A Batt. Pack - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: Question on 82120A Batt. Pack (/thread-31044.html) |
Question on 82120A Batt. Pack - Ion Abraham (New Mexico USA) - 03-30-2003 Hello, With apologies in advance for bringing up this hardy perennial yet again, could you folks give me the current scoop on rebuilding a rechargeable battery pack (82120A) for the 41C?
That is, what batteries are currently available that fit
I have a dead pack that I've had for quite a while, and I Thanks very much,
Ion Abraham Re: Question on 82120A Batt. Pack - Randy - 03-30-2003 I've recently rebuilt several with 1/3AAA Gold Peak ni-mh cells. I used the 120 mah cells, I understand there are now 160 mah cells available as well. There is room to spare in the pack, I have found a piece of 1/16" x 1/2" double sided foam tape the perfect filler. Cutting the pack open with a single-edged razor blade (Thanks Dave!) will not remove any material and it goes back together with a little plastic solvent cement. I've been running my 41C now for two months on the first charge and the pack voltage has only dropped about 100mv. I thought the self-discharge rate was higher than that!
I bought my cells from the Battery Station, they are listed here on the Museum site. Total cost per pack was less than $15.
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