Description:
The 4S 18650 40A Lithium Battery Protection BMS Board – Balanced is designed to manage and protect 4-series lithium-ion battery packs, typically utilising 18650 cells. Operating at a nominal voltage of 14.8V (3.7V per cell) and a maximum charge voltage of 16.8V, this board offers comprehensive protection against overcharging, over-discharging, and short circuits, ensuring the safety and longevity of your battery packs. The balanced version incorporates an additional integrated circuit and resistors capable of active cell balancing, promoting uniform charging and discharging cycles across all cells.
Supporting a maximum continuous discharge current of 40A and a continuous charge current of 20A, this BMS board is suitable for high-power applications such as electric drills, sprayers, LED lights, and low-power inverters up to 135W. Its compact design, measuring 46mm x 60mm x 3.4mm and weighing approximately 10.3 grams, facilitates easy integration into various battery configurations. The board also features an auto-recovery function, allowing the system to resume normal operation after fault conditions are resolved, thereby enhancing the reliability and efficiency of your battery management system.
Specifications:
- Battery Configuration: 4 Series (4S) lithium-ion batteries
- Nominal Voltage: 14.8V (3.7V per cell)
- Charging Voltage: 16.8V to 18.1V
- Max Continuous Charge Current: 20A
- Max Continuous Discharge Current: 40A
- Overcharge Detection Voltage: 4.25V ± 0.05V per cell
- Over-discharge Detection Voltage: 2.8V ± 0.05V per cell
- Dimensions: 46mm x 60mm x 3.4mm
- Weight: 10.3 grams
Features:
- Active cell balancing for uniform charging and discharging
- Overcharge, over-discharge, and short circuit protection
- Auto-recovery function for seamless operation after fault resolution
- Compact and lightweight design for easy integration
- Suitable for high-power applications up to 135W
Contents:
- 1 x 4S 18650 40A Lithium Battery Protection BMS Board – Balanced
