In today’s fast-paced electronics world, reliable energy storage is critical. Keeppower, a leading innovator in battery solutions, proudly presents the 4000mAh Li-ion Rechargeable Battery Cell, a high-capacity 18650 cell designed to deliver consistent, verified performance. Every battery is rigorously tested to ensure it reaches the advertised 4000mAh capacity, setting a new benchmark for reliability and efficiency.
Verified Capacity: 4000mAh Guaranteed
One of the most common concerns among users is whether high-capacity batteries truly deliver the promised energy. Keeppower’s 4000mAh Li-ion Rechargeable Battery Cell has been measured under strict testing standards. Results consistently demonstrate that our 18650 batteries meet or exceed the 4000mAh nominal capacity, offering users highly reliable energy for extended device operation. This verified capacity ensures that your devices, from power tools to portable electronics, operate at peak performance.
Key Features of the 4000mAh Li-ion Rechargeable Battery Cell
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Nominal Voltage: 3.6V
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Continuous Maximum Discharge Current: 8A–10A
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High-Capacity Design: Provides reliable energy for extended usage
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Durable Build: Engineered for long cycle life and enhanced safety
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Operating Temperature Range: Charge: 0–45°C, Discharge: -20–60°C
These specifications make the battery ideal for applications that demand consistent and reliable power output, from portable electronics to high-drain devices.
Custom Battery Solutions for Your Brand
At Keeppower, we understand that one size does not fit all. That’s why we offer customized 4000mAh Li-ion Rechargeable Battery Cells to meet specific client needs. From tailored discharge rates to unique packaging and branding, our solutions are designed to integrate seamlessly into your products. Our Q4 service ensures a simplified process for businesses, allowing rapid prototyping and scalable production without compromising quality.
Why Choose Keeppower?
Keeppower is not just a battery manufacturer. With decades of experience in lithium-ion, lithium polymer, and LiFePO4 technologies, our team combines innovation, precision engineering, and rigorous quality control. Hundreds of thousands of devices worldwide rely on Keeppower batteries daily.
Benefits of choosing our Li-ion Rechargeable Battery Cell:
True 4000mAh capacity, verified in real tests;
Superior cycle life for long-term reliability;
High discharge current support for demanding electronics;
Global certifications and manufacturing standards;
Customizable solutions tailored to your brand;
Power Your Devices with Confidence
The Keeppower 4000mAh Li-ion Rechargeable Battery Cell delivers what other batteries only promise: actual tested capacity, safety, and dependable performance. With our commitment to innovation and customer-centric solutions, businesses can rely on Keeppower to power their devices efficiently and reliably.
Explore our full range of high-capacity 18650 batteries and take advantage of customized battery solutions to optimize your product performance.