Can Fenix chargers charge unprotected 18650 cells?
We can't recommend any of our chargers for an unprotected 18650 battery. All Fenix batteries are protected batteries, so that's all we recommend to our customers. It's a safety feature for a very powerful battery type. Fenix chargers will charge other 18650 brands, but we won't recommend the use of any brand of unprotected batteries. Learn more about the difference between protected and unprotected 18650 batteries.