21700 E-Bike Battery Hailong Polly 36V 48V 52V | 14Ah–30Ah Lithium Pack for 500W–1500W Motor
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Ready to work out of the box!
Includes all key accessories and simple setup instructions for quick start!
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Expected arrival within 12 -18 days
Upgrade your electric bike with the high-performance 21700 E-Bike Battery (Hailong Polly), engineered for reliability, power, and extended range. Designed to fit a wide range of setups, this versatile lithium-ion battery pack is compatible with 36V, 48V, and 52V systems and available in capacities from 14Ah to 30Ah.
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High-Power Output: Perfectly optimized to support powerful motors ranging from 500W up to 1500W, delivering consistent acceleration and strong hill-climbing torque.
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Advanced Cell Technology: Built using high-capacity 21700 (and 18650-compatible variants) lithium-ion cells for superior energy density, longer lifespan, and stable power delivery.
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Universal Hailong Polly Casing: Features the popular, secure, and water-resistant Hailong Polly style mounting case, making installation, removal, and frame compatibility seamless for most e-bike frames.
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Built-In BMS Protection: Equipped with an intelligent Battery Management System (BMS) that protects against overcharging, over-discharging, over-current, and short circuits for ultimate safety.
Customer Reviews
Conforms to the original model. I just rode 25 km and didn't lose any bar. So it seems correct. I recommend it.
Everything looks good, haven't installed it yet. The charger is charging.
Super
That’s a quality battery—i’ve already ordered four in total. Recommended!
Thanks