- Compact and Portable Design: This USB lithium battery charger is designed for convenience, making it easy to carry wherever you go. Its compact size ensures you can charge your devices without the worry of running out of battery while outdoors. - Enhanced Safety Features: Equipped with intelligent IC technology, this charger provides robust protection against overcharging, short circuits, and deep discharge. This not only safeguards your batteries but also prolongs the lifespan of your devices. - Versatile Compatibility: Ideal for connecting SM-3P, SM-4P, and SM-2P lithium batteries, this charger is perfect for powering a variety of electric RC toys, toy airplanes, and other 7.4V 1000mA devices. Unlock endless entertainment possibilities with its wide range of applications. - Clear Charging Indicators: The charger features red and green indicator lights that clearly display the charging status of your batteries. Once fully charged, the lights automatically turn off, conserving energy and preventing overcharging. - Practical Use Scenarios: - Charge your favorite RC toy on-the-go during a weekend camping trip. - Keep your toy airplane powered for extended playtime at the park. - Ensure your batteries are ready for action during family gatherings or events. This USB lithium battery charger is a reliable solution for all your charging needs, providing safety, portability, and versatility in one compact device.