The 5A Balance Current 4S 12V Active Balancer Module Equalizer is a powerful tool for managing the energy levels in Lifepo4 and Li-ion battery packs. This module actively monitors and balances the individual cells within the battery pack, ensuring optimal performance and longevity. With its energy transfer capabilities, it can redistribute power from overcharged cells to undercharged ones, maintaining an even charge across the entire pack. The enclosed case provides protection and easy installation, making this a must-have accessory for anyone working with high-capacity battery systems. Measuring 4.72 x 2.76 x 1.18 inches and weighing 3.52 ounces, this compact module packs a punch in battery management.