BMS Controller (protection board) 4S Li-Ion 18650 16.8V 40A is an electronic system that controls both the charge and discharge of a battery consisting of 4 Li-on elements of the 18650 type, it is responsible for the safety of the battery, monitors the condition, assessment of secondary performance data.
BMS (Battery Management System) is an electronic board that is installed on the battery to control the process of its charge and discharge, monitor the condition of the battery and its elements, control temperature, the number of charge and discharge cycles, and protect the components of the battery. The control and balancing system provides individual control of the voltage and resistance of each battery element, distributes currents between the components of the battery during the charging process, controls the discharge current, determines the loss of capacity from imbalance, and guarantees safe connection and disconnection of the load.
Based on the received data, the BMS balances the charge of the cells, protects the battery from short circuit, overcurrent, overcharge, overdischarge (too high and too low voltage of each element (cell)), overheating and hypothermia. The BMS functionality allows not only to improve the operation of batteries, but also to maximize their service life. When a critical battery condition is detected, the Battery Management System reacts accordingly by prohibiting the use of the battery, i.e. turns it off.
Characteristics:
- Charge voltage: 16.8V - 18V
- Charge current (upper limit): 40A
- Discharge current: 40A (if ventilation conditions do not allow for efficient heat removal, it is necessary to reduce the discharge current)
- Type of balanced cells: 3.6V, 3.7V lithium batteries (including types 18650, 26650, Li-po batteries).
