Anyone have a photo of a broken HP28S battery cover? - 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: Anyone have a photo of a broken HP28S battery cover? (/thread-92597.html) |
Anyone have a photo of a broken HP28S battery cover? - Han - 05-14-2006 I've been thinking of branching into the HP28S series, but would like to know a bit more about the battery cover problems (I've read about them from various sources). Does anyone have a photo of an example of a broken cover (or a photo of what typically goes wrong with these covers)? A precise description would help if no photo is available.
Thanks in advance!
Re: Anyone have a photo of a broken HP28S battery cover? - Marcus von Cube, Germany - 05-15-2006 This is my 19BII which has the same case as the 28S
Both the battery door and the case are broken.
Marcus
Re: Anyone have a photo of a broken HP28S battery cover? - Han - 05-15-2006 Thanks for the photo!
Re: Anyone have a photo of a broken HP28S battery cover? - Bruno Férard - 05-16-2006 I have been using a HP28S for 15 years.
I can tell you that you have less than 10s to replace your batteries once the battery cover is removed otherwise you'll have your memory cleared. Re: Anyone have a photo of a broken HP28S battery cover? - James M. Prange (Michigan) - 05-17-2006 If you get a "Memory Lost" message in ten seconds, then there's
Regards, Re: Anyone have a photo of a broken HP28S battery cover? - Joe McDonough - 05-19-2006 A friend of mine has a 28S but doesn't know the battery size. Could you tell me? Re: Anyone have a photo of a broken HP28S battery cover? - Thomas Okken - 05-19-2006 The HP-28S uses N cells (a.k.a. IEC LR1) -- the same size the HP-41 uses.
28 series batteries - James M. Prange (Michigan) - 05-19-2006 And just in case anyone doesn't know, N cells (at least of the alkaline chemistry) are nominally 1.5 volt. Other chemistries will have somewhat different voltages, but may work with the 28 series. I'd guess a range of about 1.0 to 1.6 volt would probably work. Some 12 volt nominal batteries have a similar size and shape, and look as if they might fit, but I expect that they'd fry the calculator.
Regards, Edited: 19 May 2006, 3:48 p.m.
Re: Anyone have a photo of a broken HP28S battery cover? - Bruno Férard - 05-20-2006 Quote:
Actually I have the kind of guy that keeps using his calc with "low bat" signal on for a very long time before getting new batteries. |