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) 1Indicate LED inside(Green means full& Red means charging) 2Charging and working could be at the same time. 31 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16) 40.5A charging current,1A output, Full ESP32 pins break out 5Over charge protection,Over discharge protection