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The Molicel 21700 is a premium cylindrical lithium-ion battery series designed for high-performance, high-reliability applications, including three flagship models: P42A, P45B, and P50B. As a leading 21700 battery solution, it delivers consistent nominal voltage of 3.6V, with capacity ranging from 4200mAh (P42A) to 5000mAh (P50B) and maximum continuous discharge current up to 60A (P50B)—making it suitable for high-drain devices. It features ultra-low internal resistance (max 20mΩ, down to 13.5mΩ for P50B) for efficient energy transfer, minimal heat generation, and exceptional thermal stability, operating reliably in temperatures from -40℃ (discharge) to 60℃ (charge).
With compact dimensions (max 21.7mm diameter × 70.2mm height) and lightweight design (max 80g), it integrates easily into battery packs for EVs, electric motorcycles, heavy-lift drones, and backup systems. Whether powering hyper-performance vehicles or industrial backup units, the Molicel 21700 balances power, durability, and fast charging (up to 5C for P50B) to meet diverse high-demand needs.
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| Specification Item</ | Molicel 21700 P42A</ | Molicel 21700 P45B</ | Molicel 21700 P50B</ |
|---|---|---|---|
| Nominal Voltage | 3.6V | 3.6V | 3.6V |
| Standard Capacity | 4200mAh | 4500mAh | 5000mAh |
| Minimum Capacity | 4000mAh | 4300mAh | 4800mAh |
| Charging Voltage | 4.2V | 4.2V | 4.2V |
| Charge Cut-off Voltage | 2.5V | 2.5V | 2.5V |
| Max Internal Resistance | 20mΩ | 20mΩ | 13.5mΩ |
| Max Continuous Discharge | 45A | 45A | 60A |
| Charge Temperature Range | 0~60℃ | 0~60℃ | 0~60℃ |
| Discharge Temperature Range | -40~60℃ | -40~60℃ | -40~60℃ |
| Max Weight | 70g | 70g | 70g |
| Dimensions (D×H) | 21.7×70.2mm | 21.55×70.15mm | 21.55×70.15mm |
| Energy Density (Gravimetric) | N/A | 242 Wh/kg | 265 Wh/kg |

The Molicel 21700 battery series is ideal for high-demand applications across industries, including:
Battewill is a professional manufacturer of customized lithium battery packs, offering reliable power solutions for drones, mobility vehicles, robots, and specialty applications. With factories in Dongguan, offices in Shenzhen and Hong Kong, and after-sales centers in the US, Germany, and Dubai, we serve customers worldwide with high-quality and efficient battery solutions.
We supply LiFePO4 batteries, ternary lithium-ion batteries, and specialty cells for high/low temperature or military-grade applications.
Our lithium batteries are widely used in drones, mobility scooters, wheelchairs, golf carts, robots, medical devices, garden tools, smart home appliances, energy storage systems, and specialty applications.
Yes, we specialize in customized lithium battery packs and BMS solutions based on your voltage, capacity, size, and application requirements.




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