Quantity   Component name
1 × STM32F411xx Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × NCR18650B Battery 3400mAh capacity, Max continuous discharge current: 6.8A
1 × MCP73831T Power Management ICs / Power Supply Support
1 × GD25Q16CEIGR 16MB Flash