🚀 INR21700S-65P 6500mAh 52A Battery – Extreme Power & Cold
The INR21700S-65P 6500mAh 52A battery from LinkData New Energy shatters the old rule that you have to choose between raw power and long runtime. Most cylindrical cells force that trade-off. This one does not. It delivers 6500mAh of capacity alongside a staggering 52A continuous discharge current—all while operating at temperatures as low as -40°C. For OEMs designing next-generation power tools, e-bikes, and robotics, this cell demands serious attention.
High Power 21700 Cell – 6500mAh Capacity Meets 52A Discharge
Let us start with the numbers that matter. This 6500mAh 21700 battery cell offers a nominal capacity of 6500mAh (minimum 6370mAh) at 0.2C discharge, with a nominal voltage of 3.6V and total energy of 23.4Wh per cell. In practical terms, this means fewer cells per pack, simpler BMS design, and a tangible reduction in overall system cost.
But the real headline is the discharge capability. The INR21700S-65P 6500mAh 52A battery supports a maximum continuous discharge current of 52A—approximately 8C—with a peak pulse discharge of 100A at 50% SOC. Most standard 21700 cells top out at 15A–20A. This cell nearly triples that figure.
| Discharge Rate | Current | Relative Capacity |
|---|---|---|
| 0.2C | 1.3A | 100% |
| 1C | 6.5A | 97% |
| 3C | 19.5A | 95% |
| 5C | 32.5A | 95% |
| 8C | 52A | 75% |
Even at 52A, the high power 21700 cell still delivers 75% of its rated capacity. For applications demanding sustained high-power output—cordless chainsaws, drone lift motors, high-speed e-scooters—this level of performance means you can design with confidence.
❄️ -40°C Lithium Ion Battery Performance That Redefines Extreme Cold
Temperature extremes are the silent killer of lithium-ion performance. Most cells lose significant capacity below freezing, and charging below 0°C is often strictly prohibited. The INR21700S-65P 6500mAh 52A battery rewrites that rulebook.
- Discharge temperature range: -40°C to 70°C
- Charge temperature range: -10°C to 60°C
At -40°C, this 52A discharge battery still delivers 70% of its room-temperature capacity at 1C discharge. At -20°C, that figure rises to 85%.
| Discharge Temperature | -40°C | -30°C | -20°C | 25°C | 55°C |
|---|---|---|---|---|---|
| Capacity Retention | 70% | 80% | 85% | 100% | 97% |
Even more impressive: at -40°C, the high discharge 21700 actually delivers higher capacity at 3C (90%) than at 1C (80%). The internal heat generated during high-current discharge warms the cell from within, releasing more stored energy. This self-heating characteristic is invaluable for applications requiring short, powerful bursts in freezing conditions.
If your product must work in winter, this battery keeps working when others shut down.
⚡ 8A Fast Charging – Get Back to Work in Under an Hour
Charging performance is equally robust. Standard charging at 0.5C (3.25A) completes in under 3 hours. For faster turnaround, the INR21700S-65P 6500mAh 52A battery accepts a maximum continuous charge current of 8A—about 1.2C—enabling a near-empty cell to recharge in under an hour.
Critical charging notes for system designers:
- Pre-charge: if cell voltage drops below 2.5V, use ≤0.65A until it recovers above 2.5V
- Cut-off: terminate when current drops to 0.02C (130mA) in CV mode
- Safety limit: charging should not exceed 4.23V/cell (with charger accuracy considered)
Protection circuit thresholds recommended by LinkData:
- Overcharge protection: ≥4.25V/cell
- Over-discharge protection: ≤2.0V/cell
- Over-current protection: ≥60A
🔄 600 Cycles at 1C/1C – Built for the Long Haul
Durability is non-negotiable for OEM procurement. The INR21700S-65P 6500mAh 52A battery delivers a tested cycle life of 600 cycles at 6.5A charge / 6.5A discharge (1C/1C) with ≥80% capacity retention.
| Test Profile | Cycles | Capacity Retention |
|---|---|---|
| 6.5A / 6.5A (1C/1C) | 600 cycles | ≥80% |
| 8A / 20A (1.2C/3.1C) | 500 cycles | ≥60% |
Storage performance is equally dependable: after 30 days at 60°C, the 21700 6500mAh supplier-grade cell recovers ≥90% of its initial capacity. For supply chain managers, this means less waste from shelf-life degradation.
🔒 GB31241-2022 Certified – Safety You Can Rely On
The INR21700S-65P 6500mAh 52A battery has been tested against GB31241-2022 standards and passes every critical test with no fire, no explosion:
| Test | Condition | Result |
|---|---|---|
| External Short Circuit | 80±20mΩ, 57°C | No fire, no explosion |
| Overcharge | 8A to 4.6V, 7h | No fire, no explosion |
| Forced Discharge | 1C reverse, 90min | No fire, no explosion |
| Low Pressure | 11.6kPa, 6h | No fire, no explosion, no leakage |
| Temperature Cycling | 72°C ↔ -40°C, 10 cycles | No fire, no explosion, no leakage |
| Thermal Test | 130°C, 30min | No fire, no explosion |
| Heavy Impact | 9.1kg, 610mm | No fire, no explosion |
The LinkData 21700 cell is also UN38.3 certified for transport, with a shipping SOC of 20±10% for safe handling during road, ocean, and air freight.
Mechanical Durability That Survives Drops, Vibration, and Crush
Physical robustness has been validated through rigorous testing:
| Test | Condition | Result |
|---|---|---|
| Vibration | 7–200Hz logarithmic sweep, axial/radial, 3h each | No fire, no explosion, no leakage |
| Drop | 1.0m onto concrete, 4 drops | No fire, no explosion, no leakage |
| Crush | 13.0kN or one-third voltage drop | No fire, no explosion |
INR21700S-65P Datasheet – Key Specs at a Glance
| Parameter | Value |
|---|---|
| Nominal Capacity | 6500mAh (Typ.) / 6370mAh (Min.) |
| Nominal Voltage | 3.6V |
| Energy | 23.4Wh (Typ.) / 22.9Wh (Min.) |
| Max Continuous Charge | 8A |
| Max Continuous Discharge | 52A |
| Max Pulse Discharge | 100A (50% SOC) |
| AC Internal Resistance | ≤4.5mΩ |
| DC Internal Resistance | ≤13.5mΩ (50% SOC, 1C 10s) |
| Dimensions | 21.35±0.15mm × 70.7±0.2mm |
| Weight | 70.2±1.5g |
| Charge Temperature | -10°C ~ 60°C |
| Discharge Temperature | -40°C ~ 70°C |
| Cycle Life (1C/1C) | 600 cycles ≥80% |
📩 Ready to Power Your Next Project with This 6500mAh 52A Battery?
The INR21700S-65P 6500mAh 52A battery is more than a spec sheet—it is a solution for OEMs who refuse to compromise between energy and power. Whether you are building next-gen cordless power tools, designing all-weather e-bikes, or scaling robotics that must perform in extreme environments, this cell delivers where it matters most: real-world performance.
Samples and full test reports available on request. Contact our technical sales team to discuss your application and request a quote. Let us help you build a better battery pack.
📦Click to Buy INR21700S-65P at Factory Price – Contact Us for Wholesale Quote. We offer flexible MOQ, fast worldwide shipping, and full technical support. Samples available upon request.
📧 Email: info@becellbattery.com
🌐 Website: www.becellbattery.com