2W 3V 3.7V 4.2V 9V 12V 24V 32V 36V 48V 60V led bulb perfect for DC Dimmer PWM dimming lighting, 5V LED bulb is powered via USB, they are Best powe bank led bulb

2W 3V 3.7V 4.2V 9V 12V 24V 32V 36V 48V 60V led bulb perfect for DC Dimmer PWM dimming lighting using battery charge system. DC 3.7V LED Light bulbs is a Best 18650 batteries used led lights,  Lithium batteries used for outdoor mobile lighting. 3V has positive and negative points. 5v led bulb is powered via USB, they are Best 18650 batteries used led lights, Best 18650 batteries used led lamp, Power bank led bulb.  Thread is positive for negative pin. Replacement LED bulb with DC Constant Voltage driver perfect for PWM DC Dimmer, Constant Voltage Dimmer Applications to dimming lighting using battery charge system.

Working Temperature: -35 to +55degree Celsius

Base option: E14, E27, B22

Different globe shape option: C35, A60, T45, ST64, G80, G95, G50 Clear glass globe, Transparent glass or Brown glass globe option
Different color temperature option: 2200K, 2700K, 3000K