the book

[Geoff Quickfall]

They work,

-As long as they fit, and they do because you are not using the supplied metal bracket which adds length to the battery pack.

-As long as you don't mind using the calculator charging circuit in an aging calculator.

-As long as your calc is not suffering broken tabs or corroded flex strips.

I prefer to charge externally, hence the use of the aa phone battery packs that come with the mini plugs. If the flex connector or traces on the battery bracket are good they are an option. If you have missing trace such as the bracket above then charging on board may be a issue.

So there are a few scenarios to consider which will impact your battery choice:

-bad flex connector requiring a jump wire workaround
-bad battery bracket trace requiring a wire workaround and no charging on board
-bad tabs and good battery bracket requiring a wire workaround.
-bad tabs, bad flex, bad traces requiring tab replacement, wire work around, no charging.
-as above and just wiring around the entire system with the bracket removed.

There are more scenarios but it is 4am and I have to get back to sleep, on a trip to London.

Night! See you Friday!