I have some news to report… I located the 26 800 charger that came with the Nightwatch NSX4 l I bought from Neal.
The brand and model are “YONii C2000” and it claims to charge at 2A. I connected it to a USB voltage display and it actually looks like it’s pulling about 1.6 A
Successfully charged the Queen 26800 quickly, however I don’t think the charge was very low
I emailed Neal to ask if he sells the charger separately. I’ll let you know if/when he replies