Package include: 6000mAh Batteries (2-Pack) Replacement for Milwaukee m-18 Battery. 1 Multi-Voltage Battery Charger 48-59-1801 for Milwaukee 18v battery Wide Compatibility: Our battery is a replacement for Milwaukee m18 battery 48-11-1850, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828 , 48-11-1840, 48-11-1841, 48-11-1811, 48-11-1852, 48-59-1850,etc. Moreover, replacement for milwaukee battery is compatible with Milwaukee 18v cordless tools 2646-22CT, 2643-21CT, 2641-21CT, 2646-21CT, 2646-20, 2642-21CT, 2641-20, 2729-22,etc Intelligent Detection: Diagnostics with LED indicator displays the battery charge status. When the battery temperature is too high, the red and yellow lights will light up at the same time to give a reminder Safe & Reliable: The built-in safeguards (built-in chip and cooling fin) can monitor each battery and are going to protect against overcharging, overloading, overheating and short circuiting. Friendly Consumer Sevice:30days Free return and replacement. For any question, click "Ask a question" on our storefront, or click "contact seller" in "Your Order" options. Package include: 6000mAh Batteries (2-Pack) Replacement for Milwaukee m-18 Battery. 1 Multi-Voltage Battery Charger 48-59-1801 for Milwaukee 18v battery