ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The entire solution takes up the least amount of printed circuit board area. This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology, power and RF properties best, which is safe, reliable, and scalable to a variety of applications. _x000D_ _x000D_ _x000D_ Features:_x000D_ _x000D_ Indicate LED inside(Green means full& Red means charging) _x000D_ Charging and working could be at the same time. _x000D_ 1 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16) _x000D_ 0.5A charging current,1A output, Full ESP32 pins break out_x000D_ _x000D_ Over charge protection, Over discharge protection, _x000D_ Small volume, easily embedded to other products _x000D_ Strong function with support LWIP protocol, Freertos _x000D_ Supporting three modes: AP, STA, and AP+STA _x000D_ Supporting Lua program, easily to develop _x000D_ _x000D_ _x000D_ Specification: _x000D_ Model: ESP32 _x000D_ Battery: 18650 Battery (not included) _x000D_ Charging current: 0.5A _x000D_ Output current:1A _x000D_ Size: 90*30mm/3.5*1.2in _x000D_ Weight: Approx.26g/0.9oz _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x ESP32 Board(18650 Battery is not included)