Dual 18650 Lithium Battery Mobile Power Expansion Charging and Discharging Module 5V/2A & 3.3V/1A

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This is a 18650 Lithium Battery Shield Mobile Power Expansion Board Module 5V/2A 3.3V/1A Micro USB for Arduino ESP32 ESP8266. This mobile power supply has a built-in lithium battery protection IC, which has overcurrent, overvoltage, Undervoltage protection, and the module is a portable mobile power supply that supports 3.3V/1A and 5V/2A two voltage outputs. Installation of the battery must be determined positive and negative, the board has been clearly marked positive and negative Or Installation errors will burn out the module. The battery voltage works normally from 3.2V to 4.2V. 5V voltage output rated current is 2A, the output of current depends on the quality of the 18650 battery. Features: Supports 3.3V 1A voltage outputs. Supports 5V 2A voltage outputs. Micro USB charging current is 600mA-800mA. Supports up to two 18650 batteries. It is recommended to use two 18650 batteries, which can be longer. When the switcn Is toggled to NORMAL, the Current output Is less than 50ma, It will automatically stop in about 10 seconds, and it will switch to standby mode.When you turn it to HOLD, it will remain on regardless of the situation until the battery is empty (the 2512 resistor on the back will heat up). Applications: This lithium battery shield module is ideal for use in various types of mobile power supply applications, including charging smartphones, tablets, and other USB-powered devices. It can be used to power various types of electronic circuits and systems, including microcontrollers, sensors, and motors. This lithium battery shield module is suitable for use in hobbyist and DIY electronics projects, as well as for educational and research purposes. General Specification Output Voltage(V) 3.3V/5V Output Port Type USB or expansion port Input Port MICROUSB Conversion efficiency(%) 95 Length (mm) 100 Width (mm) 49 Height (mm) 20 Weight (gm) 38 Please allow 5% measuring deviation due to manual measurement. Package Includes: 1 x Dual 18650 Lithium Battery Shield Mobile Power Expansion Board Module