Datasheet — Panasonic Ncr21700t

Favored by enthusiasts requiring long runtimes and consistent brightness output. Conclusion

The cell offers a volumetric energy density of approximately 775 Wh/l , making it one of the most efficient 21700 cells for space-constrained designs.

| Parameter | Value | Reviewers' Take | |-----------|-------|------------------| | | 4800 mAh (0.2C discharge) | Excellent for 21700 format. Slightly above the common 4500-5000 mAh range. | | Nominal Voltage | 3.6V (3.7V typical) | Standard Li-ion. | | Max Discharge Current | 2C (9.6A continuous) / 4C (19.2A pulse) | Major limitation. This is a low-drain cell. | | Standard Charge | 1.4A (0.3C) | Very slow by modern 21700 standards. | | Fast Charge | 3.2A (0.67C) | Still slow. Compare to Samsung 50G or LG M50LT (1C+). | | Max Charge Voltage | 4.20V ±0.03V | Standard, not high-voltage (4.35V). | | Cut-off Voltage | 2.5V | Standard. | | Internal Resistance | ≤ 40 mΩ (AC IR) | Good, but not exceptional (high-power cells are ~10 mΩ). | | Weight | ~69g | Very light for capacity – good energy/weight ratio. | | Operating Temp | Charge: 0~45°C / Discharge: -20~60°C | Standard range. |

Q: Can I use the NCR21700T in my DIY project? A: Yes, the NCR21700T can be used in various DIY projects, but ensure you follow proper safety guidelines and handling procedures when working with lithium-ion batteries. panasonic ncr21700t datasheet

Typical retail pricing varies by quantity and region:

Enthusiasts building custom battery packs for various projects often select the NCR21700T for its capacity and Panasonic‘s reputation for quality.

To help tailor this information to your project, could you share you intend to power with these cells? I can also provide a detailed comparison against similar cells (like the Samsung 50E or Molicel P42A) if that would help. Share public link Slightly above the common 4500-5000 mAh range

Engineered to strict manufacturing tolerances for predictable performance in multi-cell packs. 2. Technical Specifications Matrix

⚠️ Avoid random PDF hosting sites – many contain old revisions (e.g., 2019 pre-production specs with 12.5A limit). Always verify the revision date.

German battery forum discussions note that while the cell can theoretically handle 30 A discharge currents, the usable energy drops significantly when discharged at higher rates, particularly if the cut‑off voltage is set above 3.0 V. In other words, the cell is high‑capacity but not truly high‑power; pushing it beyond its rated continuous current will result in diminished performance and potentially reduced service life. This is a low-drain cell

Temporarily interrupt the circuit if the continuous draw exceeds for more than a few seconds.

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