It happened I've got slightly different light as I should and with Gearbest we agreed to arrange the giveaway.
The light is like this one -> Will post some pictures later on.
My wish is someone who gets this light is capable improving it by changing stock driver with this one -> . I will provide DX driver along and the winner should make (at least brief) review of the light. It is not simple task as it involves some lathe work for the new driver to fit. Stock driver is smaller diameter than 28mm replacement. Leds are connected serially (6S1P) and the light is powered by any 8.4V battery pack (tipicaly 2S2P or 3S2P connected 18650 cells) with 5.5x2.1mm plug. It would be nice if the modder can measure input voltage and the current.
I could do most of the mod by myself, but will do it on some other similar one so I'm giving this one away.
Rules for participant:
- is from EU or Central Europe countries (because shipping issues)
- became member of BLF before 13th August 2014
- can do driver change and will do brief review of the stock and moded light
- one post per member and notice if he is the MTB or any other type of cyclist
- the winner will be choosen by random.org.
- giveaway will close on 24th Aug, CET.
Preferably but not exclusive the winner is a MTB cyclist who might use the light for night riding or anyone who will pass it to the one who would use it that way. We will discuss with the winner about the battery pack to be included or not (weight and capacity issues). The shipping will be free to worldwide. the EU region and Central Europe countries.
You may ask questions via PM if you like and I will publish relevant answers in post #1 so the others can get some detail info.
I wish you all good luck.
Edit: Added Q&A section in post #1
Edit2: Got permission to ship worldwide
Edit3: Added pictures of the drivers in post #1
Edit4: Added pictures of the voltage and currents at off/hi/low mode