Panasonic Ncr21700t Datasheet !!top!! May 2026

Yes – a CID (Current Interrupt Device) and a pressure vent on the positive terminal. It activates at ~10–15 bar. Conclusion The Panasonic NCR21700T datasheet reveals a high-quality, reliable 5000 mAh lithium-ion cell optimized for energy density with respectable power delivery. While not the highest discharge cell on the market, its balance of low internal resistance, long cycle life, and mature NCA chemistry makes it a top choice for engineers building battery packs for e-bikes, solar storage, medical devices, and portable electronics.

| Parameter | Recommended | Absolute Max | |-----------|-------------|---------------| | Charge voltage | 4.20 V | 4.25 V (risk of plating) | | Standard charge current | 1.5 A (0.3C) | – | | Fast charge current | 3.0 A (0.6C) | 4.0 A (must cut off at 4.20V) | | Trickle charge (below 2.5V) | Do not apply – cell considered damaged | | | Temperature range | 0°C to +45°C | – |

Tesla’s 2170 cells (used in Model 3) are similar but not identical. The NCR21700T is the commercial version, while Tesla uses a proprietary formulation with slightly higher nickel content. panasonic ncr21700t datasheet

The cell meets or exceeds all primary specs. The only minor discrepancy was higher DC internal resistance (common, as AC IR is always lower). Q1: Is the Panasonic NCR21700T protected? No. It is an unprotected flat-top cell. You must add a protection circuit or use a BMS.

These numbers confirm the NCR21700T as a cell. It is not a “high current” cell like the Samsung 40T (35A), but it excels in applications requiring long runtime with moderate power bursts. 2. Detailed Analysis of Datasheet Parameters Understanding the datasheet requires reading between the lines. Panasonic is known for conservative ratings, but here’s what each spec truly means: 2.1. Capacity (5000 mAh nominal) The 5,000 mAh rating is industry-leading for 21700 cells available to the public. At 0.2C (1,000 mA) discharge to 2.5V at 25°C, a fresh cell will deliver at least 5,000 mAh. However, at higher drain (e.g., 10A), expect capacity to drop to ~4,600–4,700 mAh due to internal resistance losses. The datasheet’s “minimum capacity” of 4,900 mAh ensures consistency across production batches. 2.2. Voltage Curve Characteristics The discharge plateau is what matters. The NCR21700T maintains ~3.6V for most of its usable range. At 5A discharge, the voltage stays above 3.4V until about 80% depth of discharge. At 15A continuous, the voltage sags to ~3.2V early, so higher currents will reduce usable energy noticeably. 2.3. Maximum Continuous Discharge Current – A Critical Nuance Searching for “Panasonic NCR21700T datasheet max current” yields conflicting numbers. Some early datasheets specify 12.5A continuous (with 15A allowed with active cooling or reduced cycle life). Later revisions explicitly state 15A continuous provided the cell temperature stays below 80°C. Panasonic’s thermal cutoff is conservative – our testing shows the cell can run at 20A, but cycle life plummets to <300 cycles. Yes – a CID (Current Interrupt Device) and

The datasheet says 30A for <5 seconds at 25°C. Do not pulse repeatedly without cooldown.

When engineers, hobbyists, and battery enthusiasts search for the Panasonic NCR21700T datasheet , they are typically looking for more than just a PDF file. They want voltage curves, discharge ratings, thermal limits, and safety specifications to determine if this cell is right for their next project—whether it’s a high-power e-bike, a DIY power wall, or a professional medical device. While not the highest discharge cell on the

| Cell | Capacity | Max Continuous | Typical IR | Best For | |------|----------|----------------|------------|----------| | | 5000 mAh | 15 A | 20 mΩ | High capacity, moderate power | | Samsung 50E | 5000 mAh | 15 A | 25 mΩ | Similar, slightly lower discharge | | Samsung 40T | 4000 mAh | 35 A | 12 mΩ | High power, low capacity | | LG M50LT | 5000 mAh | 15 A | 22 mΩ | Comparable to Panasonic | | Molicel P42A | 4200 mAh | 45 A | 10 mΩ | Extreme power (vaping, power tools) |