Inventory › Milwaukee 48-11-1820 M18 Red Lithium CP 2.0AH Battery. Image 1 of 1 Milwaukee 48-11-1820 M18 Red Lithium CP 2.0AH Battery. $29.99 Milwaukee 48-11-1820 M18 Red Lithium CP 2.0AH Battery. Inventory # 816486-13 Add To Cart Added! Milwaukee 48-11-1820 M18 Red Lithium CP 2.0AH Battery. Inventory # 816486-13