js-lots
Newly Enlightened
I am new to this forums and learning alot about led flashlights. I love them. I have a couple questions. Is it ok to mix different brand 18650's in the same charger. For example tenergy and surefire in an ultrafire wf-139 charger? Is it safe to take those same two batteries and use them in a flashlight designed for 2x18650 or should I use the same brand batteries? Anyone's help would be wonderful. 
__________________________________________
mte ssc-p7/ streamlight stinger/ tiablo a9/ aurora mc-e/
__________________________________________
mte ssc-p7/ streamlight stinger/ tiablo a9/ aurora mc-e/