The ASG 11.1v 900mAh Single Stick LiPo Battery is a high-performance battery designed for use in airsoft guns. It features a powerful 11.1v output and a 900mAh capacity, which provides plenty of power to keep your gun firing all day long. The battery is also built to last, with a durable construction and high-quality materials that are designed to withstand the rigors of airsoft gameplay. With its single stick configuration, this battery is easy to install and fits most airsoft guns that require a single stick battery.