A rechargeable 9W bayonet bulb is a type of light bulb that can be charged and used without being connected to a power source. It has a bayonet base, which means it can be easily inserted and twisted into a compatible bayonet socket.
9W refers to the wattage of the bulb, indicating its power consumption and brightness. A 9W bulb is generally equivalent to a traditional 60W incandescent bulb in terms of brightness.
