Description This is a high-performance, universal 18V lithium-ion battery compatible with the Power X-Change system. It features a sealed, waterproof, and dustproof housing with an IP57 rating, ensuring durability in tough environments. The battery includes a short-circuit protection sensor that detects contact with water and automatically shuts off to prevent damage, allowing safe use even after immersion once dried. It provides reliable power for various cordless tools and devices, with a capacity of 4.0 Ah and a maximum power output of 900W. The battery is designed for maximum efficiency, with a microprocessor-controlled active management system that monitors parameters to ensure safety, optimal performance, and long service life. It also features a 3-stage LED indicator to check the current charge level. Technical specifications Voltage: 18V Capacity: 4.0 Ah Power: 900W Protection class: IP57 (water and dust resistant) Battery technology: Lithium-ion Weight: approximately 580g