Beware of the cheap no-name 18650 batteries, LED flashlights, and chargers. Lots of info on explosions and fires. I had lots of these no-names for my business and have long since trashed all of them. The no-name 18650 batteries are the worst offenders. I had about a dozen identical UltraFires (the most common no-name cheapo) and peeled the labeling off of them to find every one was a different recycled used piece of crap (see photo of Chinese factory below). A good 18650 3400mAh battery costs at least $20 each. Everything we have used daily for the last several years is Nitecore brand.
