They died, long time ago probably, so what to do about it? Recondition or replace - these are the options.
If cutting the old one up is not a prefered option here is another.
My solution combines the (very rare) alkaline adapter version and the usual chargeable version with the flexibility of changing both when needed.
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Here is my webpage with all extra info and more images:
https://sites.google.com/view/tercsirob ... authuser=0
It might not be seen on the photos but the connectors towards the STBook are not flat as on original battery - I'm using the 12x12 mm contacts there. I used some copper sheets during tests. They work well too but I had to cut them to shape, etc.
Let me know if interested in buying but I suggest check the whole webpage or ask any questions before calling it. Price depends on many things. I definitely won't ship batteries due to restrictions, so the cable on those need to be changed. The rest depends on what else you need and what else I need to buy for it to build.
As a guide I'm thinking a 3D printed case with contacts and cables soldered for £45 (no battery inculded) + shipping. Cable for the battery to connect to case will be added.
Robson
