This has probably been asked before but I just bought a Vamo V5 kit and I did buy extra 18350 batteries as well. After reading on here I see that I can also use 1 18650 battery in place of the 2. I have an Ultrafire flashlight that takes two 18650 batteries. The batteries say "BRC 18650 3000mAH, 3.7V Li-ion" it also says it has a charge protection circuit on it. Can these be safely used in my Vamo?