LED torch lens?

I have this LED torch, a luxeon 'MXDL' (next to a AA battery in the photo). It's a 3 watt LED torch (supposedly) running on a AAA battery connected to a joule thief of some sort (it has some sort of transistor, a capacitor, and an inductor), but it isn't that bright,( being about the same as a 3 5mm LED torch which has these lenses), but I still like it because of its compact size and light output. Anyhow, its throw is kinda poor, and I was wondering whether I could put a cheap lens onto it (from out of, say a camera's lens) to increase throw. Would it work? How would I go about it?

P.S: I found these AAA li-ion batteries online, but I didn't even know that those batteries existed. If I put one of them into my torch, they'd probably increase brightness a lot, but because they are only rated at 300mah, I really doubt if it would be worth buying them. What do you think?


Picture of LED torch lens?
Re-design7 years ago
It's a tiny light.  There is not much you can do to increase the throw.  Is it already focusable?  If so the it's about as good as it's going to get.  It's mean to carry around on your keychain to help you open locks.  Or find that dime you lost behind the couch.

But you can experiment if you want to.  It's going to be hard to find the exact size lenses you need to experiment.

With lithiumion batteries you HAVE to use the correct charger.  If you want proof go to youtube and search "lithium fire".  THe capacity of an AAA alcaline is 900 - 1100 mAh so the 300 is not a very large battery.