INR21700-P45B — литий-ионный элемент 21700

About the Molicel INR21700-P45B 21700 Li-ion Cell 4,500 mAh 45 A

The P45B is Molicel's ultra-high-power 21700 and appears on the company's own application matrix under drones and eVTOLs, two-wheeled motorcycle racing, and hyper EVs and racing sports cars. 4,500 mAh with a 45 A discharge rating and 3 C fast charging at 13.5 A is the combination that gets it there — the cell recovers between runs as fast as it delivers.

Why pack builders specify it

• 45 A discharge rating at 4,500 mAh, a power-to-energy ratio Molicel builds its whole P-series around
• 3 C fast charge at 13.5 A, so airborne and track packs turn around between sorties
• Listed by Molicel for drones/eVTOLs, racing motorcycles and hyper EVs, not just power tools
• Discharge rated down to -40 °C, which matters for high-altitude UAV work

Typical applications

• Heavy-lift and industrial drones – High discharge with fast turnaround between flights
• eVTOL and electric aircraft – Molicel positions the P-series for the vertical take-off and landing segment where peak power is sized in seconds
• Racing motorcycles and e-motorsport – Short, repeated high-power events with limited cooling
• Professional power tools – Cordless equipment that ships with fast chargers and short duty cycles

Where it fits

The P45B is right when both peak power and recharge time are constrained. If the duty cycle is long and hot rather than short and sharp, the P50B is the better cell — Molicel rates it at roughly double the cycle life under 100 W discharge.

Charging and pack integration

Charge CC-CV to 4.2 V within the current limits listed above and stop discharge at 2.5 V. These are unprotected industrial cells: a BMS or protection circuit is required, interconnects must be resistance or laser welded rather than soldered, and cells of different model, batch or state of charge must not be mixed in one pack. Charging below 0 °C is not permitted unless the pack implements a low-temperature charge strategy.

Certifications and documentation

UN38.3, MSDS, IEC 62133-2, UL 1642, CE, RoHS, REACH. UN38.3 test summary, MSDS and the cell specification are available on request.

Packaging

Specification basis: Official Molicel product data.