ITEM NAME:Mini Bluetooth WiFi DIY Program 18650 Battery ESP32-WROVER Board Module Kit Description: This development board can resolve the power issues for you in some ESP32 projects. 3000mAh 18650 battery allows the ESP32 to work properly with the 18650 charging system integrated. When the LED indicator is green, it means all and red means charging. It supports charging and working simultaneously. One switch can control the power supply and an additional LED is programmable (with gpio16). With 0.5A charging current and 1A output current. Supports overcharge protection and overdischarge protection. Specification: Chipset: ESP32-WROVER-IB 240MHz 32-bit microprocessor FLASH: QSPI 4MB Flash / 8MB PSRAM KEY: reset,BOOT Switch: BAT switch USB to TTL: CP2104 Modular interface: SD card, UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA pre-amplifier Working voltage: 2.3V-3.6V Working current: about 40mA Sleep current: 1mA Power Supply: USB 5V/1A Charging current: 1000mA Battery: 3.7V lithium battery Wi-Fi Standard: FCC/CE/TELEC/KCC/SRRC/NCC WiFi protocol: 802.11 b/g/n/e/i (802.11nï ¼Å’speed up to150Mbps) Frequency range: 2.4GHz-2.5GHz Transmit Power: 22dBm Communication distance: 300m Bluetooth protocol: Bluetooth V4.2BR/EDR and BLE standard Package Includes: 1 Piece 18650 battery ESP32 WROVER Development Board 2 Pieces Pin.3000mAh 18650 battery allows the ESP32 to work properly with the 18650 charging system integrated. Modular interface: SD card, UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA pre-amplifier.