The NCR21700T is an un-protected, flat-top industrial cell. Connecting these cells requires professional (minimum 0.15mm to 0.2mm thickness) attached via a dedicated capacitive-discharge or AC spot welder. Direct soldering onto the terminal plates is prohibited, as the prolonged heat transfer damages the delicate internal pressure separator and structural seals. Physical Architecture & Compression
If you're looking for a reliable, high-performance , the Panasonic NCR21700T stands out as a top contender in the industry. Whether you're an engineer designing an e‑bike battery pack, a DIY enthusiast building a power wall, or someone simply looking to understand this powerhouse, this article will explore the complete NCR21700T datasheet, its real‑world performance, and how it stacks up against its biggest competitors.
If you look at the fine print, Panasonic rates the cell at 35A only if the ambient temperature is controlled and the discharge is cut off at 2.5V. If you let that cell sit in a sealed, non-ventilated enclosure (like a cheap flashlight or a hot garage), you will exceed the 75°C operating surface temperature limit long before the battery is empty. panasonic ncr21700t datasheet hot
The Panasonic NCR21700T is suitable for various applications:
datasheet, explaining its physical characteristics, discharge behaviors, and safety margins. Core Specifications Overview The NCR21700T is an un-protected, flat-top industrial cell
Thanks to its high capacity and low internal resistance, the Panasonic NCR21700T is widely used across many industries:
The Panasonic NCR21700T (often cited as having a 5000mAh capacity) represents a shift towards high-energy-density cells that still maintain decent discharge capabilities. Key Data Sheet Highlights NCR21700T Size: 21700 (21mm Diameter x 70mm Length) Nominal Capacity: 5000mAh (Typical) / 4850mAh (Minimum) Nominal Voltage: 3.6V Maximum Charging Voltage: 4.2V Physical Architecture & Compression If you're looking for
Rule of Thumb: If the cell is too hot to hold comfortably in your hand (approx 50°C+), you are discharging it too fast for its design.
While powerful, users should note that these are usually "flat-top" cells and may require specific adapters or spacers for use in standard consumer flashlights.
The Panasonic NCR21700T delivers a compelling balance of high capacity, low internal resistance, long cycle life, and robust safety features. Whether you're building a cutting‑edge e‑bike pack or seeking a reliable cell for high‑performance applications, this datasheet should serve as your starting point. Always obtain the latest official datasheet from Panasonic or an authorized distributor before finalizing your design.