4 Cell Li-ion Drone Battery Pack (14.8V~16.8V)

A 4-cell (4S) Li-ion drone battery pack provides a nominal voltage of 14.8V and charges up to 16.8V (4.2V per cell). It is commonly used in drones for its high energy density, longer flight times, and better cycle life compared to LiPo batteries. Typically built using 18650 or 21700 cells, it requires a BMS for safety and a compatible Li-ion charger. Ideal for applications where efficiency and endurance are key.