HP41, N battery (N Cell), charging of HR1

[Erik-M]

The X-cell batteries are also available at conrad in the Netherlands for € 2,12
Lowest price I could find, conrad is usually more expensive.
https://www.conrad.nl/p/oplaadbare-n-bat...uks-255174
I use a SkyRC MC3000 charger because besides all the normal bells and whistles it has a programmable charge current down to 50 mA, a shutdown timer and mAh counter.
And you can connect to a computer to plot a nice charge / discharge graph.
I blew up too many batteries in my life.