How To

Change Battery in J5 Tactical Flashlight: Step-by-Step Guide & Tips

To change the battery in a J5 Tactical flashlight, unscrew the tail cap counterclockwise. Take out the old battery. Insert a new 14500 rechargeable battery, making sure the positive end faces the bulb. Check that the battery polarity is correct. Finally, screw the tail cap back on securely to ensure…