HP Forum Archive 20

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What brand / name / type were the Original 12c batteries? Message #1 Posted by gene wright on 21 Apr 2011, 11:56 a.m. I know you can use three Energizer 357 type cells, but does anyone know what was shipped with the first 12c models? Curiosity and a cat have a meeting later.

Re: What brand / name / type were the Original 12c batteries? Message #2 Posted by Michael de Estrada on 21 Apr 2011, 12:56 p.m., in response to message #1 by gene wright According to the handbook dated August 1981, various batteries were recommended replacements: Alkaline: Eveready A76, UCAR A76, RAY-O-VAC RW82, National or Panasonic LR44 Silver-Oxide: Eveready 357, UCAR 357, RAY-O-VAC RS76 or RW42, Duracell MS76 Silver-Oxide will last more than twice as long as Alkaline Edited: 21 Apr 2011, 12:59 p.m.

Re: What brand / name / type were the Original 12c batteries? Message #3 Posted by bill platt on 21 Apr 2011, 1:30 p.m., in response to message #2 by Michael de Estrada but that doesn't answer the question. (And Gene already knows that list by heart :-) I have to query my crainial database for memory of the 1st time I opened the battery compartment of my 11c, to see if I remember the brand, and then extrapolate that to the 12c. Something jogs in me that they were alkaline. But how could that be a reliable memory? Too long ago and not an important thing to remember. I do remember being interested in the Silver for two reasons: one being the longer life, and the other being the interesting fact that alkalines go dead more gracefully.

Re: What brand / name / type were the Original 12c batteries? Message #4 Posted by Michael de Estrada on 21 Apr 2011, 1:37 p.m., in response to message #3 by bill platt Doesn't it stand to reason that the original batteries would have been the same as one of the recommended replacements? I seem to recall when I changed the original batteries in my HP-15c that they were A76 alkalines.

Re: What brand / name / type were the Original 12c batteries? Message #5 Posted by Randy on 21 Apr 2011, 1:46 p.m., in response to message #1 by gene wright A76's from Eveready with the small Union Carbide logo stamped on them. Edited: 21 Apr 2011, 1:47 p.m.

Re: What brand / name / type were the Original 12c batteries? Message #6 Posted by db (martinez, ca.) on 23 Apr 2011, 10:47 a.m., in response to message #5 by Randy Corroborating Evidence: i believe it was union carbide in my 11c too.

Re: What brand / name / type were the Original 12c batteries? Message #7 Posted by Palmer O. Hanson, Jr. on 21 Apr 2011, 10:13 p.m., in response to message #1 by gene wright Gene: I have three HP-11C's. Two have Kodak KA76's in them -- not even on the list. One of the two is S/N 2217A03623 which is an early enough unit to have the bug. I am fairly sure that I have never replaced the cells as I have hardly ever used it. The other has MS76 Silver Oxide cells.

Re: What brand / name / type were the Original 12c batteries? Message #8 Posted by gene wright on 21 Apr 2011, 11:22 p.m., in response to message #7 by Palmer O. Hanson, Jr. Thanks all!

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