The chemistry is stable, but high temperatures increase internal impedance, causing higher voltage sag, as shown in detailed thermal characterization reports (e.g., Batemo Cell Model ).
The Panasonic NCR21700T is an excellent cell you respect its thermal limitations. It offers superior capacity (4800mAh) compared to high-power competition. However, the moment you type "Panasonic NCR21700T datasheet hot" into Google, you have likely already exceeded its safe thermal envelope. panasonic ncr21700t datasheet hot
The is a high-performance, industrial-grade lithium-ion cell designed to meet the extreme power demands of modern high-drain applications . Originally developed for automotive and heavy-duty industrial use, this 21700 cell is often referred to as "hot" in the enthusiast community due to its exceptional 40A peak discharge capability and its frequent use in Tesla battery architectures. Panasonic NCR21700T Core Specifications The chemistry is stable, but high temperatures increase