Power your portable devices with this high-performance 21700 7.4V 5000mAh lithium-ion battery pack. Built with premium 21700 cells in a 2S1P configuration, this pack delivers stable 7.4V power with a 5000mAh capacity, making it ideal for a wide range of electronics, from LED lights to small power tools.

Key Features

• High-Capacity & Stable Output: 5000mAh nominal capacity at 7.4V (8.4V fully charged) provides long-lasting runtime for your devices.
• High-Quality 21700 Cells: Made with ZECA 21700 ternary lithium cells for high energy density and reliable performance.
• Integrated Safety Protection: Built-in BMS safeguards against overcharge, over-discharge, overcurrent, and short circuits, ensuring safe operation.
• Durable PVC Encapsulation: Blue PVC heat shrink casing offers excellent insulation, moisture resistance, and impact protection.
• Wide Operating Temperature: Works reliably from -20℃ to 60℃ during use, and stores safely between 0℃ and 45℃.
• Compact Form Factor: Dimensions of 72.19 × 42.51 × 23.14mm make it easy to integrate into various projects and devices.
• No Memory Effect: Can be recharged at any level without reducing overall capacity, maintaining consistent performance over time.

Specifications

Common Applications

• LED lighting systems and outdoor string lights
• Portable speakers and audio equipment
• Small power tools and DIY projects
• Robotics, automation, and RC vehicles
• Medical devices and monitoring tools
• Backup power supplies and portable electronics

Safety & Usage Tips

1. Use only a dedicated 8.4V lithium-ion battery charger with matching polarity to avoid damage.
2. Do not expose the battery pack to water, high humidity, or extreme temperatures outside the specified ranges.
3. Keep away from metal objects that could short-circuit the terminals.
4. If the pack swells, leaks, or emits an unusual smell, discontinue use immediately.
5. Store in a cool, dry place with a 40-60% charge level for long-term storage.