Exceptionally well designed.
"I picked this up because I had some spare 18650s I wanted uses for, but when I received it I was pleased to find some really useful features. With the included wire it can be used as a power bank for charging your phone, and there's a magnet in the base for mounting to metal surfaces. The one issue I've encountered is that it thinks my fully charged cells are half empty (based on the visual indicator) but the flashlight's been working fine regardless, so that's a minor concern."








