21700 EBike Battery Downtube Polly 72V 60V 52V 48V 24Ah 36V 27Ah 22.5Ah 14.4Ah Baterias for 2000W 1500W 1000W 750W 350W Motor

Expected Arrival Within 5–8 Days Upgrade your electric bike with our high-performance 21700 Cell Polly-Series Downtube Battery. Engineered for efficiency, durability, and a sleek frame-mounted fit, this battery is the perfect choice for everything from daily commuting to high-torque off-road adventures. Built with premium-grade 21700 lithium cells, it offers superior energy density and long-cycle life compared to standard 18650 packs. Universal Power Compatibility: Available in multiple voltage configurations (36V, 48V, 52V, 60V, 72V) to perfectly match your specific motor setup. High-Discharge Performance: Optimized for a wide range of motor wattages, supporting systems from 350W up to 2000W. Advanced Smart BMS: Integrated Battery Management System provides essential protection against over-charge, over-discharge, short-circuits, and overheating. Premium 21700 Cells: Equipped with high-capacity 21700 lithium cells for better thermal stability, longer range, and a consistent power curve. Secure Polly Design: The aerodynamic, lockable downtube "Polly" housing keeps your battery protected and balanced on the bike frame. Ready-to-Use Kit: Each battery comes with a matching charger, frame-mounting bracket, and security keys.