HP45 battery pack



#3

Can anyone help me with the way I could replace the rechargable pack for a HP45 with alkaline units and connect them to touch the contacts within the calculator. I know their are three batteries in the pack and that they have an unusual connection method with contacts inside the calculator. Or would it be better to just place the alkalines within the pack by cutting it open and throwing out the rechargable units??
Thanking anyone in advance for their help

Paul


#4

Rebuilding the battery pack is not hard if you're handy with a soldering iron. You need to get three new NiCad or NiMh "AA" batteries (solder-tab preferably, rather than the standard batteries), cut open the plastic holder along its seam, cut away the copper contacts, solder them to the new batteries, solder the other contacts of the batteries to complete the circuit, then put the whole assembly back in the battery case and figure out some way to hold it together.

I've done it many times, but these days I just pay $15 for very nice packs from this guy:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=11713&item=3092490998&rd=1&ssPageName=WDVW

Heck, just a set of 3 solder tab NiCads cost almost this much!


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP 41 Battery Pack Rebuild John Ratard 0 908 09-29-2012, 01:37 PM
Last Post: John Ratard
  HP45/32E Connection Matt Agajanian 2 203 07-07-2012, 06:31 PM
Last Post: Matt Agajanian
  Unknown battery pack Nick R 4 267 05-27-2012, 01:32 AM
Last Post: Nick R
  Disassemble Battery Pack 82028B (woodstock) Jacques Karensky 0 159 05-19-2012, 03:39 AM
Last Post: Jacques Karensky
  aOT--Battery/battery contact care advice needed Matt Agajanian 0 147 04-24-2012, 07:35 PM
Last Post: Matt Agajanian
  HP41 battery pack Cristian Arezzini 1 188 11-07-2011, 06:36 AM
Last Post: Ignazio Cara (Italy)
  HP-19c battery pack replacement (again...) Xavier A. (Brazil) 8 395 09-22-2011, 04:41 PM
Last Post: Xavier A. (Brazil)
  Rebuilding a HP41 battery pack M. Joury 10 460 05-19-2011, 05:28 PM
Last Post: M. Joury
  HP45 Battery Pack Disassembly Eric_G 4 240 05-11-2011, 11:42 PM
Last Post: Eric_G
  Battery pack rebuild Dane Ericksen 4 188 04-06-2011, 01:40 PM
Last Post: dinamarco

Forum Jump: