Quality BAK N21700CK-55E 5.5Ah High Capacity NMC Chemistry Lithium Ion Battery Cell factory

BAK N21700CK-55E 5.5Ah High Capacity NMC Chemistry Lithium Ion Battery Cell

Name: BAK N21700CK-55E 5.5Ah High Capacity NMC Chemistry Lithium Ion Battery Cell
Brand: Shenzhen Henrid Technology co. LTD
SKU: 21700
Price: Negotiable USD
Availability: InStock

Product Summary

BAK N21700CK-55E: 3.6V 5.5Ah rechargeable lithium-ion cell with 19.8Wh energy, NMC chemistry, and 800-cycle life. Supports 2C discharge, wide temperature range (-20°C~60°C), and weighs ≤72g. Certified with CE, UN38.3, MSDS for e-bikes, power tools, and energy storage systems.

Basic Properties

Place of Origin: Henan, China

Brand Name: BAK

Model Number: 21700

Trading Properties

Minimum Order Quantity: 3000

Price: Negotiable

Tags:

Rechargeable Lithium Battery Pack

High Capacity Battery Pack

LiFePO4 Battery Pack

Product Description

Product Overview

N21700CK-55E

Cell Model: N21700CK-55E
Nominal Voltage: 3.6V Typical Capacity: 5.5Ah (5500mAh) Weight: ≤72g
Energy: 19.8Wh Cell Chemistry: NMC (LiNiMnCoO₂) Cycle Life: ≥500
The BAK N21700CK-55E is a high-performance cylindrical lithium-ion cell featuring 5.5Ah capacity and 3.6V nominal voltage. With a total energy output of 19.8Wh, it is well-suited for applications requiring high energy and moderate discharge rates, such as e-bikes, power tools, and energy storage systems.Using advanced NMC chemistry (LiNiMnCoO₂), the cell balances high energy density and safe operation, with low internal resistance and consistent performance across its rated cycle life. It supports up to 2C discharge and operates in a wide temperature range, making it reliable in varied environments. Weighing no more than 72g and sized at 21*70mm, the N21700CK-55E is compact and compatible with standard 21700 pack designs.Certified with CE, UN38.3, and MSDS, it is a trusted choice for OEMs and battery pack manufacturers worldwide.

FEATURES AT A GLANCE

N21700CK-55E

5.5Ah high capacity with 19.8Wh energy for extended runtime
3.6V nominal voltage with stable discharge curve
NMC (LiNiMnCoO₂) chemistry for high energy density and balanced performance
Supports up to 2C (10.7A) discharge current for power-demanding applications
Lightweight cylindrical design: only ≤72g, standard 21700 size (21*70mm)
Wide operating temperature: 0°C～45°C (charge), -20°C～60°C (discharge), Max surface temp 55°C/70°C
Excellent cycle life: ≥500 cycles @ 0.5C, 25°C, 80% SOH
Ideal for e-bikes, power tools, portable energy storage, and OEM packs
Certified with CE, UN38.3, MSDS for global compliance and transport safety