2Packs for Milwaukee M18 18V Batteries and Replacement M18 Lithium-ion Battery Charger GERTI BATT Replace for m18 18 volt Li-ion batteries have 5.0AH high capacity offering long-lasting performance and durability. Built-in charge indicator displays remaining runtime for less downtime on the job and keeps you up on charge status and Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect your the battery Replacement Milwaukee M18 charger charges the 14.4V-18V Lithium-Ion Batteries. Such as 48-11-1815,48-11-1828 ,48-11-1820,48-11-1840. The charger directly communicates with the battery pack monitoring individual cell voltage, temperature, and status. All of the products are CE certified, tested by manufacturer to match OEM products. GERIT BATT 30 days money back and 1 year manufacturer warranty guarantee.