Description
Send signal to MCU and execution instruction
To recharge it
The keys of each row and column are connected through the pins outside – pin R1-R4 as labeled beside control the rows
SRAM: 2 KB
5mm x 20mm x 15mm
18650 Li-Ion Battery with Protection (3.7V) - BIS Certified power module Send signal to MCU andThese lithium ion batteries come in a variety of configurations and capacities. The battery with a protection circuit provides over voltage, under voltage, and over current protection. Yet, it is slim and easy to fit into many project cases. The included protection circuitry keeps the battery voltage from going too high (over charging) or low (over use) which means that the battery will cut out when completely dead at 2. 5V. However, even with this