4S Active Balancer – 5.5A High-Precision Battery Equalizer Board for LiFePO4/Li-ion/LTO, 5mV Accuracy

Cell imbalance silently kills battery packs — the 4S Active Balancer stops that damage before it starts, extending your pack's life with 5.5A high-speed equalization and ≤5mV ultra-precise voltage control.

The amiciKart 4S Active Balancer is a high-performance battery equalizer board designed for 4-cell series packs using LiFePO4, Li-ion, ternary lithium, or LTO chemistry. Unlike passive balancers that waste excess energy as heat, this active balancer dynamically redistributes charge between cells using up to 5.5A of balancing current — delivering faster, more efficient equalization especially when voltage differences are significant. With ≤5mV voltage accuracy, every cell stays tightly matched, reducing stress, preventing overcharge and undercharge, and dramatically improving long-term pack stability.

Built on a 2OZ thick copper PCB, the board handles heat efficiently and operates reliably across -10°C to 60°C — making it suitable for demanding environments like rooftop solar storage, e-bike battery packs, UPS systems, and portable power stations. The smart sleep mode drops quiescent current below 0.1mA, so your pack isn't drained during long idle periods. Whether you're a DIY battery builder, EV hobbyist, or solar integrator, this board fits seamlessly into your 4S configuration without complex setup.

Backed by a 1-year warranty and India-based support via WhatsApp, call, or email, amiciKart ensures you're never left troubleshooting alone. Ships same day for orders before 2 PM with free delivery across India — order now before stock runs out.

• Faster, Smarter Balancing — 5.5A active equalization dynamically scales with voltage difference, delivering up to 10× faster cell balancing than passive boards and significantly reducing charge time.
• Extend Your Battery Pack's Lifespan — ≤5mV ultra-precise voltage accuracy keeps all cells within tight tolerance, minimising overcharge and undercharge stress for longer cycle life.
• Works with All Major Lithium Chemistries — Supports LiFePO4, Li-ion, ternary lithium, and LTO batteries, making it ideal for solar storage, e-bikes, UPS, power stations, and DIY battery builds.
• Zero Idle Drain with Smart Sleep Mode — Quiescent current of ~12mA drops to below 0.1mA in sleep mode, protecting your pack from unnecessary discharge during long storage or idle periods.
• Thermally Reliable 2OZ Copper PCB — Thick copper construction ensures superior heat dissipation and stable operation across -10°C to 60°C, suited for Indian summers and cold-storage environments alike.
• Trusted After-Sales Support & 1-Year Warranty — Backed by a 1-year warranty with India-based support via WhatsApp, call (980-970-9898), or email (care@amicikart.com) for quick technical assistance.
• Delivered Pan-India, Free — Free shipping across India, same-day dispatch for orders before 2 PM, delivered in 3–5 business days. COD, UPI, EMI & all major payment methods accepted.