21700G/68E 6500mAh Lithium-ion Rechargeable Cell 3.6V High Capacity Cylindrical Battery for Portable Power and Energy Applications

The 21700G/68E is a 6500mAh high-capacity lithium-ion rechargeable cell designed for battery systems that require a compact cylindrical format with substantial capacity per cell. Its 3.6V nominal voltage and 21700 form factor provide flexibility for developing rechargeable battery packs with different voltage and capacity requirements.

With a 0.7C charge rate and 2C discharge rate, the cell can be evaluated for a wide range of rechargeable battery applications, including portable power equipment, energy storage systems, e-mobility battery packs, robotics, backup power equipment, and other customized lithium-ion battery solutions.

The 21700G/68E measures 70.95 × 21.65mm and weighs 75g, making it suitable for battery designers looking to optimize available space, cell quantity, pack capacity, and overall weight.

A rated cycle life of 1000 cycles supports repeated charging and discharging throughout the intended battery application. For commercial projects, the cell can be evaluated through sample testing and integrated into customized series-parallel battery pack designs.

Parameter Specification
Model 21700G/68E
Battery Chemistry Lithium-ion Rechargeable Cell
Cell Format 21700 Cylindrical
Capacity 6500mAh
Nominal Voltage 3.6V
Charge Rate 0.7C
Discharge Rate 2C
Internal Resistance ≤19mΩ
Cycle Life 1000 Cycles
Weight 75g
Dimensions 70.95 × 21.65mm
Operating Temperature 0–45°C

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The 21700G/68E is a 6500mAh high-capacity lithium-ion rechargeable cell designed for battery systems that require a compact cylindrical format with substantial capacity per cell. Its 3.6V nominal voltage and 21700 form factor provide flexibility for developing rechargeable battery packs with different voltage and capacity requirements.

With a 0.7C charge rate and 2C discharge rate, the cell can be evaluated for a wide range of rechargeable battery applications, including portable power equipment, energy storage systems, e-mobility battery packs, robotics, backup power equipment, and other customized lithium-ion battery solutions.

The 21700G/68E measures 70.95 × 21.65mm and weighs 75g, making it suitable for battery designers looking to optimize available space, cell quantity, pack capacity, and overall weight.

A rated cycle life of 1000 cycles supports repeated charging and discharging throughout the intended battery application. For commercial projects, the cell can be evaluated through sample testing and integrated into customized series-parallel battery pack designs.

  • 6500mAh High Capacity — Delivers substantial capacity from a single 21700 cylindrical cell.
  • 3.6V Nominal Voltage — Provides flexibility for multi-cell battery system configurations.
  • 21700 Cylindrical Format — Suitable for battery pack designs based on standardized cylindrical cell architecture.
  • 2C Discharge Rate — Provides a defined discharge rate for rechargeable battery applications.
  • 0.7C Charge Rate — Supports controlled charging-system design.
  • 1000-Cycle Life — Designed for repeated rechargeable battery operation.
  • Compact Cell Size — 70.95 × 21.65mm dimensions support flexible pack layouts.
  • 75g Cell Weight — Helps battery designers consider overall pack weight during system development.
  • Multiple Application Possibilities — Can be evaluated for portable power, energy storage, e-mobility, robotics, and industrial battery systems.
  • Pack Design Flexibility — Suitable for customized series and parallel configurations.

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YiFang specializes in batteries, chargers, battery packs, and power solutions, including Li-ion, LiMn (IMR), Ni-MH, and LiFePO₄ batteries.

Yes, we offer flexible OEM and ODM customization, including product design, specifications, and packaging to meet your exact requirements.

Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.

YiFang operates its own factory with automated production lines, producing up to 100,000 units daily, ensuring consistent quality and timely delivery.

You can contact us via our website inquiry form, email, or phone. Our team is ready to provide professional guidance and customized solutions.

Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.

Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.

We provide 6–12 months warranty, responsive customer support, and global insurance coverage for long-term reliability and customer peace of mind.

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