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✅ **18V 2000mAh High Capacity Lithium Battery**:This replacement lithium battery features 18V voltage and 2000mAh (36Wh) capacity, delivering stable and long-lasting power output for your G-series cordless tools, reducing frequent recharging during DIY projects and professional work. ✅ **Wide Compatibility with G-Series**:Fully compatible with BL1820G, BL1813G, BL1811G, BL1830G, BL1840G batteries. Works seamlessly with power tool models including HP457D, TD127D, DF457D, JV183D, UR180D, UH522D, CL183D, DF457DWE and more. ✅ **Multi-Layer Built-in Safety Protection**:Built with intelligent management circuit to provide overheating, overcharge, over-discharge, over-current and short-circuit protection. Adopts premium lithium cell technology with no memory effect, safe and reliable for long term daily use. ✅ **Easy Plug & Play Installation**:Precision moulding matches the original battery size and interface perfectly. No extra adaptors required, simple to install and remove, ideal for home DIY, garden maintenance and on-site engineering work. ✅ **Package Contents & Customer Support**:Package includes BL1820G replacement batteries. We offer 30-day refund and 180-day warranty, with 24/7 professional customer service to solve your product problems efficiently.