My take on the "which way goeth the battery" situation:
First, the manual-ette is just... bad. So bad it's hard to take it seriously.
If you look into the bowl the body is plainly connected to the
threads and a wire from the spring leads to the center post. There is no practical way this pipe could have ever been wired in any other manner.
Also, if you take a good look at the spring you will see that the center of coil of the spring is wound in a flat spiral. The only reason to do that would be to make contact with the small positive post on a button top battery.
Combining those two factors, if you put a good battery in there according to the instructions "positive up" - like an AW 18350 that only comes in a button top - the switch
throw is extremely short, to the point of accidentally misfiring.
AND: if you look at the switch itself and how it makes physical contact with a battery: The outer edge of the switch "braces" against the battery, resting on the battery shrink wrap. There appears to be no insulator between the switch body and the spring mounted center pin. If there is any damage to that wrap when a battery is inserted "positive up" that's any easy scenario to create a dead short at the switch, since both the battery positive center post
and the negative outer casing could be exposed to the really flat surfaces of the switch. If the battery goes in positive toward the spring instead that possibility is eliminated.
To me, just looking at the switch construction, the wiring, and the spring construction leads me to believe Kamry screwed up the instructions. It makes more sense that the battery goes in positive down, facing the spring - not the switch. It also makes no sense that this far into the game Kamry would intentionally put something into the marketplace with reverse polarity that flys in the face of industry standards, creating problems such as with the nhaler Silencer in the process.
Wouldn't be the first time I've seen instruction manuals get lost in translation.
