The RIDGID AC840020 18V 2.0Ah MAX Output Lithium-Ion Battery 2-Pack delivers extended runtime on the jobsite. MAX Output batteries facilitate battery and tool communication unleashing the full potential of any RIDGID 18V Brushless Tool providing more power and more runtime. The RIDGID 2.0 Ah MAX Output Battery will provide extended runtime compared to the 1.5 Ah Lithium-ion battery (AC870015). The Advanced Intelligent Electronics in MAX Output Batteries enable users to power through the most demanding applications on the jobsite. The RIDGID 2.0Ah MAX Output Battery is compact and lightweight, which reduces user fatigue. As always, this RIDGID 18V 2.0Ah MAX Output Lithium-Ion Battery 2-Pack is 100% compatible with all RIDGID 18V tools. Best of all, these batteries are eligible for the Industry's Only Lifetime Service Agreement, simply register within 90 days of purchase for FREE Parts, FREE Service, For LIFE. Charger sold separately.