I don't think he needs an 18650 at all.... a nice AA or cr123 xpg r5 or 2 AA light would serve him absolutely well . to thinjk everyone who stumbles into blf needs a 65$ light outfit is a bit over the top whats wrong with a 10 $ sipik 68 it's a light every newbie needs .. it will make him into a flashaholic in 3 months and he'll be back ordering solarforce like it was crack ..mho http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=280615078332