<b>LED Indicator</b> - 4 LED indicators for users to monitor power. Display remaining run time and reduce the risk of downtime work and promptly remind you that you need to charge.<br><b>Easy to Installr</b> - ARyee battery perfect compatible with 18v milwaukee cordless power tool, easy to install in various models.<br><br><b>Specifications:</b><br>Voltage:18V<br>Capacity:9.0Ah<br>Battery Type:Lithium-ion<br><br><b>Replacement For:</b><br>48-11-1840, 48-11-1828, 48-11-1820, 48-11-1815, 48-11-1850<br><br><b>Compatible With:</b><br>M18 18Volts Cordless LITHIUM-ION System Tools<br>2646-22CT,2643-21CT,2641-21CT,2646-21CT,2646-20,2642-21CT,2641-20,2729-22,2629-22,2729-20,2729-21,2629-20,2706-22,2705-20,2705-22,2704-20,2787-22,2702-20,2701-20,2656-22CT,2707-22,2708-22,2607-22,2603-22CT,2601-21,2615-20,2602-22DC,2606-20,2604-22CT,2706-20,2704-22,2788-22,2702-22CT,2701-22CT,2707-20,2708-20,2607-22CT,2607-20,2603-20,2603-22,2615-21CT,2615-21,2606-22CT,2604-22, 2604-20.