i’m using 26650’s trustfire from fasttech… they’re just fine… the light just turn it self off when it gets hot after about 45mins( using 3 batteries on high mode)
A123 never officially sold these batteries direct, so they're harder to find. I'd like to think their reluctance to do business with small businesses and individuals is why they failed. China is so much smarter about this, and it appears the German company Enerpower is too.
Enerpower does 7A well with a cutoff at 8.4A. They're on this forum right now trying to set up a direct sale. A very smart move. They even admit that this is to garner interest at a low level that hopefully trickles up into large scale orders. I wish American businesses were as accommodating to Americans.
It's very strong. It's like a powerlifter, and other higher capacity 26650's would be like a bodybuilder. The best powerlifters are far stronger than the biggest bodybuilders, but the powerlifter can't perform at lower levels as long as the bodybuilder.