Panasonic Ncr21700t Datasheet Link «2027»

High-lumen tactical and diving flashlights requiring high current. Safety and Handling Guidelines

Because industrial cells like the NCR21700T are manufactured as "bare cells" (often lacking built-in mechanical PTC or CID safety valves found in consumer-facing button-top batteries), the external pack casing must protect against punctures, crushing, and short-circuits.

Charge at 2500mA (0.5C) until the voltage reaches 4.2V.

Due to its moderate continuous discharge rating, the NCR21700T is : panasonic ncr21700t datasheet

Regularly check the outer plastic wrapping and top insulator ring. If the wrap is torn or scratched, expose of the cell or re-wrap it immediately to prevent short circuits.

The Panasonic NCR21700T requires a CC‑CV (Constant Current / Constant Voltage) charging algorithm, which is standard for lithium‑ion cells:

Heavy-duty flashlights, portable medical devices, and custom robotics build packs out of 21700 cells for extended runtime. 7. Battery Management System (BMS) Design Requirements Due to its moderate continuous discharge rating, the

The Panasonic NCR21700T is a high-capacity 21700-format lithium‑ion cylindrical cell marketed for high‑energy applications that require long run time and reasonable discharge capability. With a nominal voltage around 3.6–3.7 V and a published nominal capacity near 5,000 mAh, the cell represents a class of large-format cylindrical Ni‑rich/NC‑based (NCR-series) chemistries optimized for energy density rather than maximum continuous current. This treatise surveys its specification envelope, internal design and materials implications, electrical and thermal behavior, typical applications, performance tradeoffs, lifecycle and safety considerations, testing and modeling resources, supply/market context, and practical guidance for designers and end users.

9/10 Best for builders who need runtime without sacrificing the ability to punch hard.

The datasheet typically rates cycle life based on standard conditions (25°C, 0.5C charge/discharge). For the NCR21700T: please refer to the following resources:

| 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 | – |

For more information on the Panasonic NCR21700T datasheet, please refer to the following resources: