That’s awful. I wouldn’t expect that from any manufacturer, and much less so from a brand like Lumintop.
I’m sorry, but you’re wrong. You switched Convoy L6 and Convoy L2. Convoy L6 needs two batteries. The driver is operating from 6-8.4 volts. Convoy L2 has a driver supporting one or two batteries. If you use the Convoy L6 short tube from Convoy L2, you must have two 26350 accumulators. The Convoy L6 does not work on one battery. I shot a short video. First I test Convoy L2, second Convoy L6 (bigger reflector, side switch).
True words.
Guess that’s called unlucky when ordering from China!