Makita BL4040 XGT 40V Max Li-Ion 4.0 Lithium-Ion Ah Battery 2 Pack ABOUT MODELThe 40V max XGT 4.0Ah Battery is engineered to outlast the competition. XGT Batteries feature an advanced design with an impact-resistant outer case and shock-absorbing inner-liner that are engineered to protect the battery in harsh jobsite environments. XGT Batteries also feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications.40V max XGT Batteries are equipped with smart technology. The digital communication within XGT Batteries optimizes performance to provide up to 2X longer sustained power under heavy-load applications. The digital communication within XGT Batteries and Chargers (sold separately) actively monitors and protects against overload, over-discharge and overheating. This advanced charging technology helps optimize battery life and deliver a faster charge. The battery reaches a full charge in only 45 minutes or less.FEATURESBattery charge level with 4 bright green L.E.D. indicators allows the user to clearly see charge levelReaches full charge in 45 minutes or lessEnhanced cooling system is engineered to maximize battery lifeXGT batteries features an advanced design impact-resistant outer case and shock-absorbing inner-liner engineered to protect the battery in harsh jobsite environmentsThe digital communication within XGT optimizes performance to provide up to 2X longer sustained power under heavy-load applicationsXGT Tools and Batteries are designed with a multi-layer contact interface for more constant power delivery to take on high-current demandsThe digital communication within XGT actively monitors and protects against overload, over-discharge and overheatingXGT Batteries feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications3-year limited warrantyIncludes:(2) BL4040 ABOUT MODEL The 40V max XGT 4.0Ah Battery is engineered to outlast the competition. XGT Batteries feature an advanced design with an impact-resistant outer case and shock-absorbing inner-liner that are engineered to protect the battery in harsh jobsite environments. XGT Batteries also feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications. 40V max XGT Batteries are equipped with smart technology. The digital communication within XGT Batteries optimizes performance to provide up to 2X longer sustained power under heavy-load applications. The digital communication within XGT Batteries and Chargers (sold separately) actively monitors and protects against overload, over-discharge and overheating. This advanced charging technology helps optimize battery life and deliver a faster charge. The battery reaches a full charge in only 45 minutes or less. FEATURES Battery charge level with 4 bright green L.E.D. indicators allows the user to clearly see charge level Reaches full charge in 45 minutes or less Enhanced cooling system is engineered to maximize battery life XGT batteries features an advanced design impact-resistant outer case and shock-absorbing inner-liner engineered to protect the battery in harsh jobsite environments The digital communication within XGT optimizes performance to provide up to 2X longer sustained power under heavy-load applications XGT Tools and Batteries are designed with a multi-layer contact interface for more constant power delivery to take on high-current demands The digital communication within XGT actively monitors and protects against overload, over-discharge and overheating XGT Batteries feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications 3-year limited warranty Includes: (2) BL4040 integration by