If you have been sourcing 6000mAh 21700 battery cell options, you know the pattern. A cell looks great in the datasheet. Good capacity. Decent discharge. Reasonable cycle life. Then you test it in your actual product, and the numbers do not add up. Voltage sags under load. Capacity drops off after a few dozen cycles. The cell runs hotter than expected.
The INR21700/60Q from Great Power is a 6000mAh 21700 battery cell designed with that exact frustration in mind.
6000mAh capacity with ultra-low 5mΩ internal resistance
Start with the capacity of this 6000mAh 21700 battery cell. 6000mAh nominal, 5900mAh minimum.
That is where the internal resistance comes in. 5mΩ maximum AC impedance at 1kHz. That is unusually low for a 6000mAh cell. For comparison, many cells in this capacity range are 15mΩ or higher. The difference is not academic. Lower IR means less voltage drop at high current. Less heat generation. More of the stored energy actually reaches your load instead of being wasted as heat.
60A continuous discharge and 150A pulse capability
The 60A continuous discharge rating is a direct result of that low IR. At 60A, the voltage drop across a 5mΩ cell is 0.3V. With a 15mΩ cell, it is 0.9V. That is a significant difference when your cut-off is 2.5V. The low IR cell delivers more energy before hitting cut-off. Simple physics.
Then there is the pulse discharge. 150A for 2 seconds. This is not a continuous rating, but it matters for real-world operation. Motor startups. Sudden load changes. Short-term peaks that would trip protection on weaker cells. The INR21700/60Q handles those without cutting out.
-40°C to 75°C discharge for extreme environments
Temperature performance is another differentiator. Discharge from -40°C to 75°C. Most lithium-ion cells are rated from -20°C to 60°C. The extra range on both ends covers applications that see real-world extremes. At -20°C, the cell still delivers 70% of its rated capacity. At -40°C, 50%. Not a lot of cells can claim that.
Cycle life is documented at two levels.
- 6A charge / 6A discharge: 800 cycles to 80% capacity
- 6A charge / 30A discharge: 300 cycles to 80% capacity
The second scenario is the more realistic one for high-power applications. It reflects actual use conditions, not lab-friendly ideal conditions. The fact that Great Power publishes both numbers is telling.
Charging is fast. 12A maximum (2C), which brings charge time to about 30 minutes. For applications where downtime matters, this is a practical advantage.
The cell includes CID protection and has passed standard safety tests: overcharge, forced discharge, short circuit, drop, heating, crush. No fire, no explosion in any of those tests. RoHS and REACH compliant. Suitable for global markets.
Who makes it? Great Power. Henan Great Power Energy Co., Ltd. Not a new player. Established manufacturer with ISO-compliant production.
The form factor is standard 21700. 21.45mm diameter, 70.60mm height, ≤72g weight. Fits existing pack designs. Resistance welding or laser welding recommended for connections.
6000mAh 21700 battery cell – Quick Spec Summary
| What | Value |
|---|---|
| Brand | Great Power |
| Model | INR21700/60Q |
| Nominal capacity | 6000mAh |
| Minimum capacity | 5900mAh |
| Nominal voltage | 3.6V |
| AC internal resistance | ≤5mΩ |
| Max continuous discharge | 60A (RT), 110A with 80°C cut-off |
| Pulse discharge | 150A for 2s |
| Max continuous charge | 12A (2C) |
| Cycle life (6A/6A) | 800 cycles ≥80% |
| Cycle life (6A/30A) | 300 cycles ≥80% |
| Discharge temp range | -40°C to 75°C |
| Weight | ≤72g |
| Dimensions | 21.45mm × 70.60mm |
| Protection | CID |
| Certifications | RoHS, REACH |
| Warranty | 12 months |
Where the 6000mAh 21700 cell fits best
- Power tools that need sustained current without overheating
- E-bikes and scooters where both range and hill-climbing matter
- Outdoor equipment that sits in cold sheds and gets used in winter
- Portable energy storage where efficiency translates to usable output
- Industrial devices where reliability is not optional
Why Switch to the 6000mAh 21700 Battery Cell
The Great Power INR21700/60Q 6000mAh 21700 battery cell is built for buyers who need real performance, not just paper specs. If you are currently using 18650 cells, the INR21700/60Q is worth a serious look. 50% more capacity than a typical high-capacity 18650. 5x the continuous discharge. 5x lower internal resistance. The extra size and weight are acceptable in most applications for that level of performance gain.
Contact us today. Request samples. Ask for a datasheet. Or get a quote. We respond within 24 hours.
📧 Email: info@becellbattery.com
🌐 Website: www.becellbattery.com
Check the INR21700-60Q product page👉 Great Power INR21700-60Q 6000mAh 60A 21700 Battery
For detailed technical data and bulk order options, please visit the INR21700-60Q product introduction page → View full specifications and pricing