ENJ 4S-24S Active Battery Balancer The ENJ Active Battery Balancer is a high-performance energy management solution designed for 4S-24S lithium battery packs (LiFePO4, Li-ion, Li-polymer). As a direct manufacturer with independent R&D, we focus on solving battery inconsistency, extending battery life, enhancing safety and maximizing system performance, suitable for solar energy storage, EVs, backup power and industrial equipment. Core Features 4S-24S Wide Compatibility: