Description: 【Efficient Battery Balancing】: The Battery Equalizer is designed to maintain charge and discharge balance among battery in a series connection, ensuring each battery operates optimally and prolonging their lifespan 【Bidirectional Energy Transfer】: This Battery Balancer features a bidirectional energy transfer system that activates when the voltage difference between battery exceeds 10 millivolts. It automatically transfers current from higher voltage battery to lowers, maintaining equilibrium without requiring maintenance 【Versatile Compatibility】: The Battery Voltage Balancer works with individual ranging from 2.4V to 12V and can balance up to five battery simultaneously 【User Friendly Design】: With its classic design, this equalizer includes an 80cm cable equipped with M8 battery terminals for easy installation. Its compact dimensions 6.2 cmx15.3 cmx2.7 cm/2.44 inchx6.02 inchx1.06 inch make it convenient for various setups 【Installation Guidelines】: For optimal performance, ensure all connected battery are fully charged with a voltage difference not exceeding 0.2V between them; use identical types of battery with similar capacities and age; employ terminal covers to avoid short circuits during installation Specification: Material: PCB Size Chart: 6.2 cmx15.3 cmx2.7 cm/2.44 inchx6.02 inchx1.06 inch Package Includes: 1 Piece Battery Equalizer  Note: Please allow slightly errors due to manual measurement and different monitors.