Well, the 50w came. I stuck it on a charger until it no longer flashed (fully charged). Then I took it out and used it.
IMHO as long as you allow about three seconds before hitting it (press the button, hold and wait) this thing can't really be improved upon.
But it does that. Just so you know.
I've been using it for about 5 hours now and it shows no drop in voltage.
To celebrate its arrival I made 10 ml of Chefs Vapours English Trifle. Even without steeping/ageing this is great on this device.
Blimey. I remember 18650 attys and batteries that just died because liquid got into them.
This is WAY better, even at low voltages.
HOORAH!