18650 Battery Shield Board V3 Micro USB Charger ESP32 for Raspberry Pi and Arduino

Portable Power Supply: This 18650 Power Bank Module is a portable mobile power supply that supports 3V/1A and 5V/2A voltage output. Package includes: This product is for the 18650 battery, but does not include a 18650 battery. The kit includes 18650 Battery Shield V3 and a Type B USB port cable. Battery protection: Equipped with a protective circuit with overcurrent, overvoltage, undervoltage and short circuit protection. Input/Output: Micro USB port input, type B USB output, with charging current of 600mA, with operation and operating mode indication via on-board LEDs. Special attention: The installation of the battery must be determined positively and negatively. You should follow the direction of "+" "-" on the board. It is recommended to use a 18650 battery.