Far more problems have come from the smaller single cell lithium batteries, as i also use them in my electric cigarettes, and the forums for those
are full of horror stories of exploding batteries, they are enclosed in the same tubes the torches are, so be fairly carefull with them, dents and
blocked vent holes can create problems.
They are not real single cells either, open one up when its dead, you will find it is stacked smaller batteries.
I'm not one of those ninja types, more a lump in boots, so distance is still an issue for me :-)
Strikers were developed to use 50ws not 1