High-Performance 3.7V 40Ah Deep Cycle Lithium-Ion Battery Cell

Premium Li-Ion Technology
Built with high-density lithium-ion cells for superior energy storage, ensuring stable voltage output and extended cycle life. Features advanced BMS protection against overcharge, over-discharge, and short circuits.
Robust & Long-Lasting
Reinforced aluminum casing with precision welding for durability and heat dissipation. Ideal for high-demand applications like RVs, solar energy storage, and e-bikes.
Ultra-High Capacity
40Ah large capacity delivers consistent power for prolonged use. Perfect for off-grid setups, marine equipment, and backup power solutions.
Lightweight & Compact
Engineered for space efficiency without sacrificing performance. Easily integrates into custom battery packs or replacement projects.
Multi-Scene Compatibility
Designed for RVs, electric bikes, scooters, medical devices, and DIY power walls. Supports fast charging with low self-discharge rate.
Wholesale Advantage
Direct factory pricing with bulk discounts. Global shipping, strict QC, and 24/7 customer support. Upgrade your power solution affordably.