Perfect, but you have to tinker for this to work!

At the time, the product is very effective, it provides easy light a gas cooker.
But to make it work, you have to tinker a bit:
- When inserting a battery, and that attempts to close the cap, you have to force it.
One strength so that the thread ends up damaging heavily.
And when we resort the stack, it has clearly not appreciated, because it has enough deep scratches.
(So ​​it's clearly not reassuring, if we pressured the battery: risk of flight ...)

So, I tried to remove the spring of the cap, and it's perfect.
It closes properly, and it does not force.

=> Before boussiller the screw, turn the damn spring!