As a leading manufacturer in advanced lithium-ion technology, Sunpower New Energy proudly presents the Sunpower 21700 li ion Battery. This remarkable battery boasts superior anti-swelling performance and high safety standards, making it a top choice for various applications. Let’s explore the exceptional features and benefits that the Sunpower 21700 li ion battery has to offer.

Superior Anti-Swelling Performance

The Sunpower 21700 li ion battery excels in its superior anti-swelling performance, distinguishing itself from conventional batteries in the market. Our cutting-edge design and meticulous engineering have been focused on addressing the common concern of battery swelling. Through extensive research and development, we have implemented innovative measures to mitigate the risk of swelling, ensuring long-term stability and reliability for our customers.

Our engineering team has carefully analyzed the factors contributing to swelling, such as excessive heat generation and improper cell chemistry. By leveraging our expertise and state-of-the-art facilities, we have devised a cutting-edge design that addresses these concerns. The Sunpower 21700 li ion battery incorporates specialized materials and optimized cell chemistry, resulting in a robust and resilient battery that maintains its compact size and shape over extended periods.

Even under demanding conditions, such as high discharge rates or rapid charge cycles, our battery demonstrates remarkable resistance to swelling. This stability is crucial, as it not only ensures the efficiency and performance of the battery but also enhances the safety aspects associated with its usage. Our customers can have complete confidence in the Sunpower 21700 li ion battery, knowing that it will maintain its structural integrity throughout its lifecycle.

Furthermore, the superior anti-swelling performance of the Sunpower 21700 li ion battery directly translates into enhanced durability and longevity. By minimizing the risk of swelling, we have extended the operational life of our battery, allowing it to deliver consistent power output over an extended period. This durability is particularly valuable in applications where reliability is paramount, such as power tools, household appliances, traffic tools, sports and leisure applications, medical types of equipment, and communication pieces of equipment.


High Safety Performance

At Sunpower New Energy, we prioritize safety above all else. We understand the importance of providing our users with a reliable and secure energy storage solution. That’s why the Sunpower 21700 li ion battery is engineered with a comprehensive set of safety features, ensuring peace of mind for our customers.

Our commitment to safety extends beyond the design phase. At Sunpower New Energy, we have implemented rigorous quality control processes to verify the safety and reliability of each battery that leaves our facility. Stringent tests are conducted to identify any potential manufacturing defects or irregularities, ensuring that only batteries meeting our stringent safety standards are available to our customers. This meticulous attention to detail guarantees the highest level of safety for the Sunpower 21700 li ion battery.



The Sunpower 21700 li ion battery stands out as an exceptional choice for various applications, thanks to its superior anti-swelling performance and high safety standards. With its robust design, optimized cell chemistry, and advanced safety features, this battery offers unmatched stability, reliability, and peace of mind. Whether you need a battery for traffic tools, renewable energy systems, or portable electronics, the Sunpower 21700 li ion battery is a reliable and safe solution that meets the demands of today’s energy storage needs. Trust in our expertise and choose the Sunpower 21700 li ion battery for superior performance and safety.