The Panasonic NCR21700T is a high-performance lithium-ion battery that offers exceptional performance, reliability, and safety. With its high energy density, long cycle life, and high discharge rate, the battery is suitable for a wide range of applications. Whether you're designing an electric vehicle, consumer electronics, or industrial devices, the Panasonic NCR21700T is an excellent choice. By understanding the features and benefits of this battery, you can design and develop innovative products that meet the demands of today's market.
When building battery packs with the NCR21700T, a Battery Management System (BMS) must be implemented to protect against: Preventing voltage from exceeding 4.2V.
The high demand and relatively limited official supply chain for the NCR21700T have created a fertile ground for counterfeits and substandard cells, particularly on large e-commerce platforms. There are extensive reports of sellers marketing recycled or counterfeit cells as new Panasonic NCR21700Ts. panasonic ncr21700t datasheet
Ensure the charging voltage does not exceed 4.25V and the discharge cut-off is typically 2.5V or higher.
Understanding the datasheet requires reading between the lines. Panasonic is known for conservative ratings, but here’s what each spec truly means: By understanding the features and benefits of this
For procurement, these cells are typically available through authorized electronics distributors and specialized component suppliers. Ensuring the authenticity of the cells is vital for maintaining the safety and performance standards outlined in the datasheet.
The voltage is held fixed at 4.2V while the current naturally tapers down. Charging completes when the current drops below the cut-off threshold (usually 50mA to 100mA). There are extensive reports of sellers marketing recycled
Preferred by hobbyists requiring extreme runtime and high lumens. 6. Safety Guidelines and Handling
The shift toward high-capacity, high-drain lithium-ion cells has made the 21700 form factor an industry standard. Among the top-tier manufacturers, Panasonic (and its manufacturing partner Tesla) remains a pioneer. The is one of the most sought-after cylindrical cells for applications requiring a balance of massive energy density and robust discharge capabilities .
Searching for “Panasonic NCR21700T datasheet max current” yields conflicting numbers. Some early datasheets specify (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.
The datasheet guarantees ≤30 mΩ (AC IR at 1 kHz). Fresh cells often measure 18–22 mΩ. This low IR reduces voltage sag and heating. Over time, IR will rise to ~40 mΩ near end-of-life (500 cycles). High IR is the first sign of a failing cell.