Original High Discharge 21700 JP40 4000mAh-3.7V 10C Is Used for Automobile Emergency Starting Power Supply
Weighing only 70g, it is suitable for various applications such as power tools, AGV, two electric cars, electric scooters and electric bike battery packs.
The battery is manufactured by Ampace, a well-known Chinese lithium battery manufacturer, and is CE certified to meet international quality and safety standards.
With a size of 21*70mm and a cycle life of 600 times, the 21700 40PL is an ideal durable power source for your custom battery pack assembly.
It can be customized with a variety of custom terms, including PCB, wires and connectors.
The EVE 21700 4000mAh battery is a high-performance cylindrical lithium-ion cell engineered for demanding power applications. With a nominal voltage of 3.7V and a rated capacity of 4000mAh, the 21700 4000mAh battery offers a perfect balance of energy density and discharge capability. The 21700 4000mAh battery features a maximum continuous discharge current of 40A (10C), classifying it as a true High rate battery. Due to its low internal resistance and excellent thermal control, the 21700 4000mAh battery ensures safe, efficient operation across a wide temperature range. Built to EVE’s strict standards, each 21700 4000mAh battery delivers long cycle life and superior stability.
As a purpose-built Drone Battery, the EVE 21700-40PL cell meets the essential needs of UAV propulsion systems, where weight-to-power ratio, burst output, and flight reliability are critical. The Drone Battery application benefits greatly from the high discharge rate and consistent voltage of the 21700 4000mAh battery, making it suitable for multi-rotor drones, VTOL aircraft, and high-load aerial platforms. The high energy density allows each Drone Battery pack to maintain lightweight construction without sacrificing performance. For both commercial and industrial UAVs, this Drone Battery ensures longer flight times, faster acceleration, and better load endurance.
Designed as a High rate battery, the EVE 21700-40PL provides continuous discharge with peak capability up to 70A, making it ideal for systems requiring rapid energy delivery. The High rate battery structure includes high-purity materials and optimized electrode design for reduced IR and improved safety. In drone and e-mobility applications, the High rate battery delivers immediate response under high current demand. Whether used in drone propulsion or power tool systems, this High rate battery maintains voltage stability and minimizes thermal buildup.
The21700 4000mAh battery is widely adopted in drone propulsion systems, where consistent discharge curves and high pulse output are essential. Integrating the 21700 4000mAh battery into modular packs allows for compact, scalable energy designs, especially for aerospace and robotics. As a Drone Battery, its strong structural design and safety certifications—UN38.3, IEC62133, RoHS—make it suitable for export and industrial integration. Each Drone Battery cell undergoes rigorous testing for cycle life, capacity retention, and abuse tolerance.
In critical performance environments, the High rate battery properties of the 21700-40PL shine through. The cell’s durability under high discharge and temperature makes it a trusted High rate battery for air, land, and industrial use cases. The combination of high capacity, high current, and safety features means this High rate battery is not only powerful but also reliable for long-term use.
Whether used as a 21700 4000mAh battery for electric tools, a Drone Battery for aerial platforms, or a High rate battery for dynamic energy systems, the EVE 21700-40PL stands out as a top-tier solution. It represents the perfect synergy of energy, power, and safety—essential for the future of high-performance lithium battery applications.
Shenzhen Genju Technology Co., Ltd. has 16 years of experience in the lithium battery industry and is a high-tech enterprise integrating R&D, production and sales.
Specializing in the R&D and production of high-quality lithium-ion batteries, it has its own R&D brand SAFD and professional low-temperature lithium battery brand WORWORF.
The company has close cooperative relations with many universities and scientific research institutions, and has signed industry-university-research cooperation agreements with Central South University and Hunan University.
We will take the creation of safer, more stable and more cost-effective lithium battery products as the standard, and provide targeted R&D and private customization services according to the needs of different customers.
With excellent quality, stable supply and thoughtful service, we have strong competitiveness and stand out in the fierce market competition. We have established long-term and stable cooperative relations with many large enterprises and hope to become your partner.
We provide a wide range of products, including 18650 batteries, 21700 batteries, lifepo4 cylindrical batteries, lithium primary batteries and OEM/ODM batteries. Our battery pack voltage ranges from 12V to 80V, and the capacity ranges from 7AH to 100AH. Can be customized according to customer needs.
Our batteries are used in smart two-wheel travel, power tools, smart homes, smart robots, drones, portable energy storage, medical equipment, industrial equipment and other fields. Whatever your needs for battery packs, our batteries can meet and exceed your expectations.
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