With the need for lights increasing in the next few months I thought I'd just post an update on this light, and it's still going strong! I bought a second one as I liked it so much, so I now have a high beam and a dipped beam, which is really convenient so as not to dazzle cars. Haven't had any water ingress at all.
A quick tip for batteries, if you have any dead Li-ion laptop batteries around, these normally contain 5 or 6 18650 cells, the same type as this light takes, and most times only 1 or 2 cells are dead. Carefully open up the battery (should probably be wearing gloves and eye protection for this, and do it somewhere non-flammable), and you have ~4 more high quality cells for your light.
Here's a link to a new listing for anyone interested, the
Ultrafire version.
I've also just ordered one of
these lights for a bit of fun, so will probably post a review up on here after a bit of testing!