This is a high-quality replacement Li-Ion battery charger designed for 12V, 14.4V, and 18V Milwaukee lithium batteries. Constructed with high-molecular eco-friendly materials, it offers a durable, stable, and impact-resistant design for extended service life. The charger features built-in protection mechanisms including overheat protection, short circuit protection, overcurrent protection, overtime protection, overcharge protection, leakage protection, and overvoltage protection. Equipped with an internal protection board, it ensures stable charging current with safeguards against overcharging, overcurrent, and overvoltage. Includes a control switch for easy operation and is designed for seamless compatibility with original batteries. Supports efficient charging with damage detection capabilities. Designed as a fast charger for electric power tools, it delivers a charging current of 3A with an output range of 12V, 14.4V, and 18V. Compact and lightweight design saves space and enhances portability. Compatible with all Milwaukee 12V, 14.4V, and 18V lithium batteries, including M12, M14, and M18 series models such as M12 B 1.5Ah, M12 B2 2.0Ah, M12 BX 3.0Ah, M18 B 1.5Ah, M18 BX 3.0Ah, M18 B4 4.0Ah, and models 48-11-1840, 48-11-1811. Product Specifications: Name: Li-ion Battery Charger Input Voltage: 110-220V Output Voltage: 12-18V Frequency: 50-60Hz Item Dimensions: 180 x 145 x 80mm (7.09 x 5.71 x 3.15in) Package Dimensions: 185 x 150 x 85mm (7.28 x 5.91 x 3.35in) Package Weight: 600g (1.32lb) Package Contents: 1 x Replacement Charger 1 x User Guide