Description
NEEY Active Balancer 4S 5A – High-Speed Lithium Battery Equalizer (5420)
High-Power 4S Lithium Battery Active Balancer – 5A Equalization Current
The NEEY Active Balancer 4S 5A (5420) is a powerful, fast-acting active balancing module designed for 4-series (4S) lithium battery packs. With an impressive 5A balancing current, this model provides rapid energy transfer between cells, correcting imbalances significantly faster than traditional passive balancers.
This advanced equalizer improves overall battery stability, maximizes usable capacity, and extends service life. It is compatible with Li-ion, LiFePO₄ (LFP), and LTO battery chemistries, making it ideal for high-demand 4S systems, including e-bikes, solar storage, DIY battery packs, and portable power stations.
Key Features
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Supports 4S lithium battery packs
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High-speed 5A active balancing current
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Compatible with Li-ion, LiFePO₄ (LFP), and LTO
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Balances cells by transferring energy, not burning excess as heat
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Greatly extends battery lifespan and improves overall efficiency
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High-quality, durable NEEY construction
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Reduced heat generation during operation
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Easy integration with existing BMS setups
Applications
Ideal for high-performance 4S lithium battery packs, including:
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E-bikes & e-scooters
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Solar energy storage units
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Portable power stations
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DIY lithium battery projects
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RC hobby power systems
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Backup power modules
Installation Tips
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Connect all 4 balance wires correctly before powering on.
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Can be used together with an existing BMS.
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Ensure proper ventilation, especially at 5A balancing speeds.
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Avoid reverse polarity to protect the balancer.
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Use cells of similar capacity and age for best results.
