kito109654,
I just recently got one of these, and I like it a lot. I've got a dedicated 'stretch' lego that I use use for exploring incan possibilities on rechargeable AA eneloops. It started out as a 6P, but when I add an A19, that makes it a virtual '9P', and which also makes it the right length for 2xAA. Then adding one A14 makes it the right length for 3xAA. This is what I use to power the FiveMega D26 reflector/assembly for the strion bulb. Don't use 4 eneloops for the strion bulb; I've already blown a couple. When I add one more A14, it will take 4xAA eneloops, and that is what I use to run my SF P60 lamp assembly. I've got a SF P61 on the way, and I'm looking forward to playing with that. The 3-levels are accessed rather easily: push once (briefly) to turn it on low, push again for medium, and push again for high. Repeat ad infinitum. Once you install the soft-start switch, it doesn't have much of a 'click', so it takes a little getting used to. To turn it off, hold down briefly until the light goes off, then let go. Once it is on, if you hold it down for 1.5 seconds, the strobe function will come on. It also has a memory mode, so after you turn it off, it will come back on at the last setting.
There are a few funky things about this set-up that you might want to play around with. The A14 extension is just a hair longer than an AA. Once you start stacking them up, you start getting a little excess length. I was having some intermittent connectivity 'issues', so I experimented and finally ended up with a fairly thin fibre washer, which was slightly oversize in diameter, so I sanded it down until it fit, then I dropped it in the bezel in front of the lamp assembly/reflector, which pushes the lamp contact back against the batteries more, and it works pretty good now. It does leave a slight gap between the bezel and body when screwed down. Clumsily measuring it with an old pair of really cheap vernier calipers, I get a thickness of about 2mm, or roughly 3/32nds of an inch. I've got 2 extra; if you want one, send me a PM and I'll mail you one. Because the AAs rattle around a bit, I got some vinyl tubing which I cut little donut slices off of, and I put one on the end of each battery. Once I did all that, this seems to work fairly reliably, although I wouldn't use it for a life-or-death situation. I do enjoy playing with it on dog walks at night.
