2Pack 8.0Ah M-18 18V Lithium Replacement Battery for M-18 Batteries & Chargers — Fits 48-11-1840 48-11-1815 48-11-1820 48-11-1850, Compatible with 18V Cordless Power Tools

Drop-in 8.0Ah 18V lithium replacement pack engineered for M-18 systems and as a substitute for the original m18 battery. The Li-ion cells deliver no memory effect, high current charge/discharge capability, excellent energy density and a long cycle life. Compatible with all current 18V MAX tools and the following battery/charger models: Battery 48-11-1811,48-11-1815,48-11-1820,48-11-1822,48-11-1828,48-11-1840,48-11-1841,48-11-1850,48-11-1852,48-59-181,48-59-1850,48-11-1860,48-11-1865. Also fits cordless power tool models 2646-22CT,2643-21CT,2641-21CT,2646-21CT,2646-20. Integrated protection circuitry safeguards against incorrect voltage, battery overload, short circuit and internal overheating. This pack matches the original m18 battery in size and function for quick installation and removal. The 8.0Ah capacity provides extended runtime and can be charged at any time. A built-in LED indicator helps you monitor battery status.