The Yowoo 4S 14.8V 6000mAh 150C EC5 Lipo Battery is a high-performance battery designed for RC helicopters, cars, and other remote-controlled vehicles. With a large capacity and high voltage, this battery provides long-lasting power for extended flight times and improved performance. The graphene technology enhances the battery's efficiency and discharge rate, making it ideal for demanding applications. Made in the USA, this LiPo battery from Yowoo is a reliable and quality product for RC enthusiasts looking to upgrade their vehicles. works but could do with replacing battery plug.