Functionality: It operates as a normal energy-saving bulb when power is on and automatically turns on as a rechargeable backup light during power outages.
Battery: It features a rechargeable Lithium-ion battery, with capacities reported around 4000mAh.
Performance: Provides approximately 4-6 hours of continuous light during power outages.
Features: Some models include over-current protection and come with a hook accessory for mobile or outdoor use.