18650 Lipo with well designed USB micro charge port. Red and green charge status LED - very fine! But be aware of its 70mm length and check if it fits into your flashlight before (many are designed for standard 18650 cells which are only 65mm long).

18650 Lipo with well designed USB micro charge port. Red and green charge status LED - very fine! But be aware of its 70mm length and check if it fits into your flashlight before (many are designed for standard 18650 cells which are only 65mm long).

18650 Lipo with well designed USB micro charge port. Red and green charge status LED - very fine! But be aware of its 70mm length and check if it fits into your flashlight before (many are designed for standard 18650 cells which are only 65mm long).