3.7V 4500 mAh Lithium Batteries 21700

3.7V 4500 mAh Lithium Batteries 21700

3.7V 4500 mAh Lithium Batteries 21700

Stepping into the high-capacity tier of the 21700 format, the Hanery 21700-4500 delivers an impressive 4500mAh of energy. This cell is designed for applications where extended endurance is the primary goal, but a moderate footprint is still required. It is an excellent choice for long-range e-bikes, advanced robotics, and portable medical equipment, offering a significant boost in operational time between charges.

  • High Energy Density: Packs 4500mAh into a single 21mm x 70mm cylindrical cell.

  • Extended Endurance Focus: Designed to maximize runtime for devices that cannot be frequently recharged.

  • Space-Efficient Capacity: Achieves high total pack capacity with fewer cells than 18650-based designs.

  • Consistent Power Delivery: Provides a stable discharge curve throughout its long operational cycle.

  • Durable Construction: Manufactured with premium materials for long-term reliability in the field.

  • Ideal for Large Packs: Perfect for assembling high-capacity energy storage modules or large EV batteries.

Please note that we have a MOQ for our battery. For batteries in stock, the MOQ is 10,000 pcs. For customized batteries, the MOQ is 50,000 pcs.

Hanery assists you throughout your project: battery size, capacity, discharge multiplier, operating temperature, safety, and associated protection circuitry. Please contact us or mark your requirements on the inquiry quotation.

Order single or thousands of items at a time. Our warehouse and flexible shipping options are available for last-minute, deadline critical orders.

Free Sample

*Customization is always available, please mark down your need in form or just contact us.

Battery Specification

1. Mechanical Characteristics

Cell21700PCMNo
NTCNoWeightappr. 70.0g
Configuration1S1P 

2. Electrical Specification

Capacity4500mAhNominal Voltage3.7V
Energy16.65WhInternal Resistanceless than 23 mΩ
Max. Charge Voltage4.2VDischarge Cut Off2.75V
Max. Charge Current2250mAMax. Discharge Current9000mA
Standard Charge Current900mAStandard Discharge Current900mA
Charging Temperature0℃ to 45℃Discharging Temperature-20℃ to 60℃
Storage Temp.Range

1 year at -20℃ to +30℃

3 mos. at -20℃ to +45℃

1 mo. at -20℃ to +60℃

Cycle life

100 cycles ≥92%

300 cycles ≥88%

500 cycles ≥80%

3. Cell protection

Overcharge DetectionNoOverdischarge DetectionNo
Overcurrent DetectionNoShort protectionNo

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