For all that like the 3.7v option,you will love these,I loaded one yesterday and used it for 10 hours almost nonstop I mean I really put it threw the test holding the button down for 10 20 seconds and puffing like a madman,I really tried to kill this thing,hit it so much I had a headache from it lol,got up this morning and continued for another 4 hours (crash you nailed it 14hours) and that was on one that was not fully charged started at 3.7v and it didnt stop till it went under 3v.so for a moderate user I wouldnt be afraid to say this thing would last a couple of days easy.
to bad im spoiled on the 6v now lmao.anyway I give these a BIG
wish they would make a 6v 18650,,,BTW I am using these with the GGT not sure what else they will fit in.they do not fit in my adaptever
might with one of his new 6v sleeve


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