SAFD 18650 40ME 4000mah 3.6V Acupuncture Battery, Can Be Used for Electric Toys
SAFD 18650 40ME lithium iron phosphate cylindrical battery, can pass the needle test, no fire, no smoke, no explosion battery core.
Weighing only 48g , it is suitable for a variety of applications such as toys, electric toothbrushes, consumer electronics, etc.
The battery is made in China, branded as SAFD, and is CE certified, meeting international quality and safety standards.
SAFD 18650 40ME size is 18*65mm.
It can be customized according to customer requirements, including PCB, wires, connectors.
After rigorous testing, SAFD series batteries have multiple certifications. Our batteries have CE, RoHs, SDS and other certifications, and pass UN38.3, lEC6213-2 tests to ensure safety and compliance with industry-specific regulations.
The SAFD 18650-40ME is an advanced rechargeable 18650 battery engineered for long-lasting performance and reliable energy output. As a true 18650 4000mAh cell, it offers extended runtime and stability, making it one of the most competitive options in the High-capacity battery category. With a nominal capacity of 4000mAh and stable discharge characteristics, this 18650 battery is designed to power a wide range of portable electronics that require dependable, long-duration energy.
The18650 4000mAh cell is particularly suitable for applications such as portable electric fans, two-way radios, ambient lighting, mobile energy storage packs, and high-output flashlights. In each of these devices, the SAFD 40ME demonstrates why it is a trusted High-capacity battery solution—delivering consistent voltage, efficient energy transfer, and reliable cycle life. Whether used individually or configured in battery packs, this 18650 battery ensures that users enjoy extended usage time and reduced charging frequency.
Built with advanced lithium-ion chemistry, the SAFD 18650 4000mAh cell offers more energy density compared to conventional cells in its class. This makes it an ideal High-capacity battery for outdoor activities, emergency kits, and portable devices that demand both endurance and safety. Each 18650 battery undergoes strict quality control and safety testing, including protection against overcharge, over-discharge, and thermal instability, ensuring confidence for both OEMs and end-users.
The SAFD 18650 4000mAh maintains excellent cycle stability, with over 500 charge-discharge cycles before significant capacity fade. This extended lifespan positions it as a cost-effective and durable High-capacity battery choice for manufacturers of portable electronics and lighting solutions. When deployed as a flashlight power source, this 18650 battery guarantees bright, long-lasting illumination—proving its reliability in professional, recreational, and emergency scenarios.
In addition, the SAFD 18650 4000mAh integrates seamlessly into mobile energy storage systems, making it more versatile than standard lithium cells. Its cylindrical design allows for efficient pack assembly, while its optimized internal resistance supports smooth energy delivery even under sustained use. As a High-capacity battery, it excels not only in capacity but also in long-term performance and durability.
In conclusion, the SAFD 40ME 18650 battery is a robust and efficient 18650 4000mAh solution tailored for demanding portable applications. Its balance of capacity, safety, and endurance makes it a superior High-capacity battery option for users who need dependable power for outdoor devices, communication tools, and illumination equipment.
We offer 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. It 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 battery pack needs are, our batteries can meet and exceed your expectations.
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