Wide Compatibl with Milwaukee M18 18V & 14.4V Battery System: Perfect compatible with Milwaukee M18 18V REDLITHIUM & 14.4V lithium batteries. Separates heavy battery from power tool body, greatly reduces tool weight, lowers wrist fatigue and improves long-time job site operation comfort. 59Inch / 1.5M Extra Long & Thick 14AWG Wire: Upgraded 2.5mm² heavy-duty pure copper wire (14AWG), low resistance, large current carrying, stable power output, no voltage drop & heating damage. Flexible 1.5M extended length meets all flexible working space needs. Belt Wearable Battery Separation Design: With belt clip mounting structure, you can hang battery on waist belt freely. Avoid heavy tool burden, convenient high-altitude operation, narrow space construction and continuous handheld work. Plug and play, no modification required. High Stability Anti-Loose Durable Connector: Precise locking battery terminal, tight contact, anti-vibration, anti-loosening for harsh construction environment. Heat-resistant insulated shell, wear-resistant and bending-resistant cable, long service life for frequent heavy use. Multi-Scene Practical Tool Accessory Widely used for Milwaukee drill, impact wrench, grinder, saw and all cordless M18 tools. Ideal for construction workers, maintenance technicians, DIY craftsmen and outdoor repair work. Effectively upgrade your power tool using experience.