I keep a little wire next to the charger to tap the positive lead of the shutoff battery to the working battery right next to it in the charger. The chargers already connect the negatives so just a quick tap on the positive brings them back.
Ooh nice! Did you have any issues working with the Katalox? I just got some and it’s so hard it feels like tile!
I believe the calibration for these grinders looks something like
Either way, the term “calibration” + the name of your grinder should get you a fairly specific run down.
It’s worth noting that if your grinder wasn’t calibrated like this when you got it then your notes will indeed need to be redone. But only once because next time you disassemble for cleaning you start at the known zero point again by going through the simple calibration process.
I suppose that makes sense given that information is encoded as a series of key frames interspersed by 'I-frames" that simply encode the delta to the previous key-frame when using most compressed video algorithms. So cutting in-between key-frames doesn’t really make sense since the I-frame would no longer have anything to reference it’s delta to.