Comparing 21700 6000mAh Cells: TENPOWER, LinkData, Amprius, and Great Power
Four 21700 cells with around 6000mAh capacity are common in high-power and high-capacity applications. They look similar on paper, but each has a different focus. This comparison covers what buyers usually care about: cycle life, internal resistance, discharge power, temperature range, size, and charging capability.
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Quick Overview
| Model | Nominal Capacity | Nominal Voltage | ACIR | Max Continuous Discharge | Cycle Life (key condition) | Weight |
|---|---|---|---|---|---|---|
| TENPOWER INR21700-60XG | 6000mAh (min 5850) | 3.6V | ≤5mΩ | 40A (60A with 75°C cut) | 300 cycles ≥70% (6A/40A) | ≤76g |
| LinkData INR21700S-60P | 6000mAh (min 5880) | 3.6V | ≤4.5mΩ | 60A (80°C cut) | 1000 cycles ≥80% (6A/6A) | 68.0±1.5g |
| Amprius INR21700/60Q | 6000mAh | 3.5V | ≤5mΩ | 60A (110A with 80°C cut) | 800 cycles ≥80% (6A/6A) | ≤72g |
| Great Power INR21700/60Q | 6000mAh (min 5900) | 3.6V | ≤5mΩ | 60A (110A with 80°C cut) | 800 cycles ≥80% (6A/6A) | ≤72g |
Capacity and Voltage
All four are 6000mAh-class cells, but minimum capacity and nominal voltage differ slightly. LinkData guarantees 5880mAh minimum, Great Power 5900mAh, and TENPOWER 5850mAh. Amprius lists 6000mAh but does not clearly separate typical and minimum. Nominal voltage is 3.6V for three models and 3.5V for Amprius. Check your pack design voltage before choosing.
Internal Resistance and Power
LinkData has the lowest ACIR at ≤4.5mΩ. The other three are ≤5mΩ. Lower resistance means less heat and higher efficiency under load.
For continuous discharge, LinkData, Amprius, and Great Power all reach 60A with a temperature cut-off. TENPOWER is rated 40A without temperature cut, but 60A with a 75°C cut. If you need short pulses, TENPOWER leads with 160A for 3 seconds. Amprius and Great Power offer 150A for 2 seconds, and LinkData 110A for 10 seconds.
Cycle Life
This is where the differences are largest. LinkData offers 1000 cycles at 6A charge / 6A discharge with ≥80% capacity retention. Amprius and Great Power both offer 800 cycles at 6A/6A with ≥80%. TENPOWER is rated 300 cycles at 6A/40A with ≥70%.
If your application needs long calendar life and moderate discharge, LinkData is the strongest choice. If you need high-power cycling, TENPOWER is designed for that trade-off.
Temperature Range
Discharge temperature range:
- LinkData: -40°C to 80°C
- Amprius and Great Power: -40°C to 75°C
- TENPOWER: -20°C to 60°C
Charge temperature range:
- TENPOWER: 0°C to 45°C
- Amprius and Great Power: 0°C to 60°C
- LinkData: listed as -10°C to 60°C in one section, but another section says 10°C to 60°C. Confirm with the manufacturer before low-temperature charging.
If you operate in very cold or very hot environments, LinkData and the two 60Q models offer wider discharge ranges.
Size and Weight
LinkData is the lightest at 68.0±1.5g. Amprius and Great Power are ≤72g. TENPOWER is ≤76g.
Dimensions vary slightly:
- TENPOWER: D ≤21.50mm, H ≤70.50mm
- LinkData: D 21.35±0.15mm, H 70.8±0.2mm
- Amprius: D 21.30±0.1mm, H 70.50±0.3mm
- Great Power: D 21.45±0.2mm, H 70.60±0.3mm
These differences matter for pack design, especially for high-volume automated assembly. Always build to the specific cell drawing.
Charging Capability
TENPOWER supports the highest charge current at 16A maximum. LinkData offers 8A continuous and 12A fast charge. Amprius and Great Power both list 12A maximum. Standard charge rates are lower across all models, typically 3A to 6A. Choose based on your charger and thermal design.
Safety and Certification
All four cells are tested for overcharge, forced discharge, external short circuit, drop, heat, and crush. LinkData explicitly references GB31241-2022 and UN38.3. The others cover similar tests but do not list all standard numbers in the spec sheets. All require no fire and no explosion. For regulated markets, request the full test reports from your supplier.
Which One Should You Choose?
- Long cycle life, low resistance, light weight: LinkData INR21700S-60P
- High pulse power and high charge current: TENPOWER INR21700-60XG
- Wide temperature range and balanced performance: Amprius INR21700/60Q or Great Power INR21700/60Q
Note that Amprius and Great Power 60Q share very similar specs. Confirm the actual manufacturer and production version before finalizing your design.
Supply and Pricing
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