LED Emergency light is with built-in long-life and maintenance-free rechargeable battery. It has more than 5000 times charging and discharging recycle 1, 00,000 Hours of led life. You need to just 7 step Rotate the button to turn it on and off. It has runs for 4-6 hrs when fully charged by thin pin charger. You don’t have to worry about maintenance or replacement as often as you would with other light. Ideal for studying, cooking, camping, household and leisure activities