Wireless charging for a HP-25 calculator

[Maximilian Hohmann]

Hello!

(05-12-2021 02:07 PM)PANAMATIK Wrote:  Definitely I would order one base station and several batteries, if available.

I just ordered 4 fitting batteries from AliExpress (https://de.aliexpress.com/item/100500225...4c4dO8SMav). I took the 800mAh version because they are a little bit smaller than the 900mAh ones.
And I will definitely install this wireless pack into my wonderful Panamatik Low Power Woodstock because, for some reason I could never find out (my guess is the voltage converter for the GPS receiver), it keeps draining it's batteries.

Regards
Max

NB: These days I try to order as much small stuff as I can from China because in July the import duty excemption for shipments below 22 Euros will expire. After that, even small orders will become quite expensive, not because of the 19% duty but because the post office will charge an extra fee of 6 Euros for each package. A 2-Euro-Battery will then cost 8.50 Euros.