HP35 problem with a calculator, maybe due to a faulty charger

[mfleming]

(03-21-2021 09:37 AM)ThomasF Wrote:  as chargers becomes more and more unreliable, do you know the best way to charge battery packs outside the calculator?

The simplest approach is to use a battery pack where the batteries can be removed for external charging. You can modify an existing pack by hand or buy a suitable pack from the previously mentioned supplier. I'd do what Maximilian suggests and toss all chargers in a box