This 3.7V lithium battery pack is built around 18650 cells and integrates an advanced protection board to bring you an all-round peace of mind. Designed for multi-scenario applications, it is the heart of the speaker, capable of outputting power stably, allowing music to play smoothly and uninterruptedly, and unleashing stunning sound effects; it is a powerful assistant for the loudspeaker, helping to transmit clear and loud sounds, meeting the amplification needs of various occasions; it is also a powerful power source for the car refrigerator, which can continuously and accurately control the temperature even when on the road, ensuring that food and drinks are always fresh. Its stable 3.7V voltage output, combined with efficient energy storage and conversion efficiency, and excellent versatility, is undoubtedly an ideal power companion for all kinds of portable devices, adding convenience and comfort to your life and travel, and providing reliable and lasting energy support anytime, anywhere.

Since its establishment, the Yisenneng Technology Center has formed a stable and innovative lithium battery module system R&D team. The development concept is based on "integrated innovation", "project management", "elite team", and "original process" as a platform, fully highlighting the unique "fast response, excellence, customization, and strong guarantee" core competitiveness to fully meet the special needs of special users for special products, and continuously create value for users in the whole process of serving special users.

The technical center engineer team has professional and technical talents including industrial design, electronics, power supply, structure, process, software, measurement and control, electrochemistry, etc.

This 3.7v lithium battery pack with 18650 core and protection board can be used in many fields. In portable power tools, it provides strong power for electric drills and electric saws, and can easily handle the processing of various materials. Its stable output ensures accurate and smooth operation. In smart wearable devices such as sports bracelets and smart watches, it can accurately record health data and push notifications with its compact size and long battery life. In wireless security cameras, continuous power supply ensures no blind spots in monitoring and protects the safety of homes and commercial places. With its excellent energy density, safety protection and adaptability, it has become a reliable power backup in multiple scenarios, driving the stable operation of equipment and adding convenience and peace of mind to people's lives and work.

Service Purpose

• Provide customers with professional, fast, thoughtful and high-quality pre-sales and after-sales services.

Service Scope

• All Yisenneng products purchased through regular sales channels will enjoy the after-sales service provided by our company during the warranty period.

Service Content

• If there are any quality problems within 7 days, the product can be returned or exchanged if the product appearance and packaging are intact (except for customized batteries)
• If there are any quality problems within one year, it can be sent back for warranty (battery damage caused by human factors such as water ingress, battery power loss, etc. is not covered by the warranty)
• The shelf life of the product after the warranty is the remaining days of the original warranty period. Paid maintenance can be provided after the warranty period