Ah, yes Dan.
Well spotted, my proclivity to forget about stuff. Incl battery chargers.
Though oddly enough only a month ago, I had been very intermittently using the wee Kioti, without issue over a few weeks, then after a 3 day gap, the battery was completely dead.
Refused to take a charge, so I swopped it with another one.
And then I tried it again with the wee basic charger, and after violent full needle deflections and various other non charging aberrations, I finally got it to take a charge, it however took a full week before the battery, a Yausa showed the green light, and the battery once swopped back into the Kioti has been preforming faultlessly ever since.
All most odd.