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

[Erik-M]

(10-12-2020 07:16 PM)Dave Frederickson Wrote:  I must say the SkyRC MC3000 is the fanciest charger I've ever seen (Bluetooth, really?) and also the most expensive.

Yes it has bluetooth but I never used it because it has a USB connector and its supported by data explorer trough USB, http://www.nongnu.org/dataexplorer/.
Nice thing is that it runs on 12V so you can power it also from a solarpanel or car battery if needed.
It supports almost all rechargeable batteries except for 9V block so its used for all kind of batteries here.
Charging with 50 mA is a bit tricky because you don't see the voltage drop indicating the call is full, but I set the timer to 16 hours as indicated on the cell and that worked fine.
Made a few aluminium adapters on the lathe because the small cels just fit and I want the temp sensor to work (see topicstart )
They are in the calculator for 3 months now and still no low batt