HP-41 rechargeable battery pack repair

[rprosperi]

Benoit,

Here's a refurbished battery and charger (and even a 'manual'), selling auction style on eBay but starting at only $0.99:

https://www.ebay.com/itm/HP-82120-HP-CALCULATOR-RECHARGEABLE-LIFETIME-BATTERY-PACK-WORKS-PERFECTLY/362388647020

The seller, vintagecalculatorsinc, is fully reliable, has been selling these for many years, and even offers a LIFETIME WARRANTY on the unit, so it's hard to go wrong.