HP 33E Question - battery and NiCad batteries

[Steve Simpkin]

(08-13-2021 01:56 AM)Eddie W. Shore Wrote:  

(08-13-2021 12:44 AM)Steve Simpkin Wrote:  Try charging the batteries with an external battery charger. That will verify the batteries are fully charged (assuming the new batteries are good) and eliminate any potential issue with the HP charger. I wouldn't recommend charging the batteries in the calculator anyway as it's just too risky.

Any recommendations for battery chargers?

That question often devolves into a religious debate
I don't have any recommendations on a specific model. Just make sure it has a reasonably well established brand name and is rated for NiCads.