3S 11.1V 18650 Lithium Battery Polymer Battery Equalizer Board

3S 11.1V 18650 Lithium Battery Polymer Battery Equalizer Board is a smart active balancer module designed to equalize voltage levels across 3-cell lithium battery packs. It helps maintain battery health and prolong battery life by preventing overcharge or over-discharge in individual cells. This equalizer is ideal for 18650 lithium-ion or LiPo packs used in power banks, electric tools, and energy storage systems.

Key Features:

• Active Balancing: Actively redistributes energy between cells to maintain voltage equality.
• 3-Cell Support: Designed specifically for 3S (3 series) lithium battery configurations.
• Plug and Play: Simple wiring with standard JST-XH balance connectors.
• Low Standby Current: Consumes minimal power during idle state.
• Improves Battery Life: Reduces stress on cells and increases overall battery cycle life.

Technical Specifications:

• Balancing Type: Active Energy Transfer
• Number of Cells: 3S (3 cells in series)
• Operating Voltage: 9V to 13V (Nominal 11.1V)
• Balance Current: Up to 1.2A
• Quiescent Current: < 1.5mA
• Efficiency: > 92%
• Protection: Reverse polarity protection, short circuit protection

Mechanical Specifications:

• Connector Type: JST-XH 4-pin balance header
• Board Dimensions: Approx. 55mm × 18mm × 8mm
• PCB Type: FR4 double-sided
• Mounting Holes: 2 holes for secure chassis mounting

Mounting and Wiring:

• Connection: Connect battery balance wires to the JST-XH header matching B+, B1, B2, B3.
• Wiring: Ensure correct sequence of wires to prevent damage to the cells or the board.
• Compatibility: Works with both Li-ion (18650) and LiPo battery packs.

Datasheet and User Manual:

• Download 3S Battery Equalizer Board Datasheet (PDF)

Applications:

• Battery Packs: Ideal for 11.1V 3S lithium-ion or LiPo battery packs.
• Power Banks: Ensures uniform charging/discharging in portable power banks.
• Electric Vehicles: Used in small e-bike and scooter battery packs.
• Solar Energy Storage: Enhances the lifespan of solar-powered battery systems.
• DIY Projects: Suitable for custom battery-powered robotics and electronics.

Equivalent Models:

• 3S Active Equalizer BMS: Common balancing board with energy transfer circuit
• 3S Passive Equalizer Board: Simpler variant using resistive balancing
• HL-3S-Equalizer: Active equalizer with same 3S support and pinout

Package Includes:

• 1 x 3S 11.1V 18650 Lithium Battery Polymer Battery Equalizer Board