Foursevens 16650

Great batteries

I am not a battery flashlight expert, so I figure if this is the battery Jason recommends and sells, then it will work just fine in my Quark and they do!

Awesome EDC!

Not exactly true to size-

I intended to use this as a single cell replacement for a light that used two RCR123A cells, but it was a bit too large in diameter [closer to 17mm] and fit too tightly. I was able to return the cells for a full refund, no problem. My light was NOT a FourSevens product, and I believe this 16650 does fit in their lights. Great company! It would have received five stars if it fit my lights-