Hey all, Efest Slim K1 Charger Online shows that it charges 21700s, but the box and manual do not.... but I ordered it, so now I have it. Anyone know anything about this? Also, the manual says that it charges batteries in a few seconds, but I’ve had a battery on there for much longer and the indicator is still not showing fully charged. Do they actually mean STARTS charging? Any help with these two questions would be helpful. Thanks!