Are those Keeppower 18650 batteries?
yep, not idiot proof 
and too much work even for a flashaholic
still a bad design. multi cell charge management ICs are cheap. every laptop battery pack has one and they still burn up sometimes…
Agreed and it shouldn't be too difficult to design a carrier that had the appropriate balance leads built-in. As I had mentioned in my review, I'd love to see a revision to the carrier and charging system to allow balanced charging.
Who knows, we might just get it in future lights.
I cant view the uploaded pics 
It’s from 2012, dude, the pics are probably gone from the pic host.
Always wanted a Spark in my collection. Anyone wants a GB for it?
a groupbuy for the sp6?! is it still available?! i think its to late…cant find a dealer
Hkequipment.net still sells 8)
It’s a really cool light! If only they upgrade the emitters to xhp50 or the xml2 u4 maybe xpl hi too?
I just realized this could be the grandfather of the SD75 LOL
The features are almost the same!
@wrathbringer7 - I'll work on getting the pics rehosted on flickr. Razzi = R.I.P.