Great Power INR21700‑6500D Rechargeable Li‑ion Cell

21700 6500mAh Battery Cell – Overview

The Great Power INR21700-6500D is a high-performance 21700 6500mAh battery cell from Henan Great Power Energy Co., Ltd. Built on advanced NCA chemistry, it delivers a rated capacity of 6500 mAh and a nominal voltage of 3.5 V in the popular 21700 form factor. Its integrated CID ensures over-charge protection, while the PTC-free design keeps internal resistance low (≤25 mΩ) for high-efficiency, high-current applications.

Key Features of This 21700 6500mAh Cell

• High Capacity – 6500 mAh rated; standard discharge at 1250 mA down to 2.5 V provides abundant usable energy.

• Wide Operating Temperature

  • Charging: 0℃ to 65℃ (current limited by temperature; charging below 0℃ is strictly prohibited)

  • Discharging: -20℃ to 65℃ (3125 mA available even at -20℃)

  • Storage: -20℃ to 45℃ (recommended at 25%‑50% SOC for long‑term storage)

• Flexible Charge/Discharge Rates

  • Standard: 1250 mA CC/CV (4.2 V)

  • Recommended charge: 3000 mA, max 4500 mA

  • Recommended discharge: 7500 mA, max 12,500 mA – ideal for high‑power bursts.

• Excellent Cycle Life – Under 25℃ with 7.5 A discharge / 3 A charge, capacity retention ≥80% after 500 cycles – well above industry averages. This 21700 6500mAh battery cell delivers consistent performance over 500 cycles.

• Low Internal Resistance – ACIR ≤25 mΩ (1 kHz, 30% SOC) reduces heat generation and improves system efficiency.

Safety & Environmental Compliance

• Meets international safety standards: IEC62133‑2, UN38.3, UL1642, GB31241.

• Passed rigorous tests including overcharge, forced discharge, external short circuit (20℃ & 55℃), thermal shock, low pressure, drop, and seawater immersion – no fire, explosion, or leakage.

• Environmentally friendly: fully compliant with RoHS 2.0, REACH (EC 1907/2006), and EU Battery Directive (2006/66/EC).

This 21700 6500mAh battery cell is fully certified for global transport and use.

Physical Specifications

• Model: INR21700/65

• Dimensions (with PET film): Diameter ≤21.75 mm, Height ≤71.00 mm

• Weight: ≤74 g

• Terminal type: Flat cap with built‑in CID

Applications for 21700 6500mAh Battery Cell

• Cordless power tools (drills, grass trimmers)

• Vacuum cleaners & robotic floor cleaners

• Portable power stations & outdoor energy storage

• Smart home appliances (e.g., cleaning devices for brands like “Haobaba”)

• Light electric vehicles (e‑scooters, hoverboards)

• Industrial instrumentation and backup power

For all these applications, the 21700 6500mAh battery cell provides reliable, high-density power.

Usage & Storage Guidelines

• Always use a dedicated CC/CV charger with a 4.2 V cut‑off. Never exceed voltage or reverse polarity.

• For long‑term storage, keep at 30%‑50% SOC in a cool, dry place and recharge every six months to avoid over‑discharge.

• Do not disassemble, short‑circuit, immerse in water, incinerate, or mix with other cell types.

Warranty & Quality

• Delivery voltage: 3.30–3.50 V (within 10 days from factory)

• Warranty period: 1 year from shipment date (defects in materials/workmanship covered; abuse/misuse excluded).