HP 67 Battery charger not working - any alternatives

[Dave Frederickson]

(04-08-2021 02:42 PM)dbhp67 Wrote:  Since I can't find an external battery holder to charge my 97 batteries I will probably use this method for them too!

Has anyone used these type of chargers for their calculators. Is there anything to be mindful of when doing this?

I've modified my Topcat Power Pack to plug into a Tenergy 01006 Universal Smart Charger. The same charger is used to charge my 2225B printer battery packs.

For Classic battery packs I use the adapters from Mark Hoskins and a smart charger like the BC-700.

Be aware of the charging current and pack temperature. Both of the above chargers detect overtemperature.