Makita BL1840B 18V Lithium-Ion 4.0Ah Battery with Fuel Gauge - 2 Pack

This 2-pack of Makita BL1840B 18V LXT Lithium-Ion batteries offers users twice as much tooling power for a great price. These batteries charge faster and work longer than standard Li-Ion batteries, giving users and their cordless tools unprecedented performance and productivity to take on demanding tasks. These Makita 4.0Ah batteries combine more run time (35% more run time per charge than the BL1830 battery) with a category-leading charge time of only 40 minutes, providing users with more time working and less time waiting on a charge. The Makita BL1840B resists self-discharge, so these batteries are ready for use even after long periods of storage. If users don’t know how much juice remains in a pack, the convenient LED fuel gauge on this model will inform them.

When charged with the Makita Rapid Optimum Charger (sold separately), these batteries communicate with the charger to monitor current, voltage, and temperature during charging. This advanced charging technology helps optimize battery life and deliver a faster charge. These batteries are only compatible with Star Protection tools, which are indicated by the Star Symbol and/or Yellow Battery Receiver on the bottom of the tool. Star Protection Computer Controls allow communication between the tool and battery to monitor conditions during use to protect against overloading, over-discharging, and overheating.