to charge in my trustfire 001... i just got a vamp with 2 18650 batteries, i put one battery to charge yesterday at 1pm, it was still charging at 10pm.. light still red, so i had to take it off to go to bed, and it was at 3.9 volts i think, did the "shotty salesman" sell me a bad quality charger? should i just order a simple single 18650 charger?