4S Active Battery Balancer - Up to 6A

Balance a compatible four-cell battery pack by moving energy between cells. This 4S capacitive active-balancer board is a component for battery-pack projects, helping address cell-voltage differences rather than simply discharging higher cells through balancing resistors.

✅ Redistribute energy within the pack - Capacitive active balancing transfers energy between cells at different voltages.

✅ Balance across the four-cell arrangement - The module supports full-pack balancing, including cells that are not adjacent.

Make Cell Balance Part of the Pack Design

In a series pack, individual cell voltages can drift apart even though the total pack voltage looks plausible. Active balancing adds a way to redistribute energy, so the pack design can address those differences at cell level.

The balancing current varies with voltage difference and wiring; 6 A is the stated maximum, not a constant operating current. Use this board with the correctly designed pack protection and charger. A balancer does not replace a complete battery-management or charging system.

Technical details

• Configuration: 4S
• Type: capacitive active balancer
• Compatible chemistries: NCM lithium-ion and LiFePO4
• Cell operating-voltage range: 2.5-4.5 V
• Dynamic balancing current: 0-6 A
• Board size: approximately 45 × 35.5 mm

Include active cell balancing in a correctly specified four-cell battery project.