Makita BL1840B-2 Lithium Battery, 18 V Battery, 4 Ah, 40 Min Charging

Key Features

• Reaches full charge in 40 mins or less
• Battery delivers consistent power and run time in extreme temperatures, even in winter (-4 deg F)
• Battery resists self-discharge and remains ready for use even after long periods of storage
• Equipped with Star Protection Computer Controls??? to protect against overloading, over-discharging and over-heating
• Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect the battery
• Sixteen contact terminals maintain a constant connection with the tool to help prevent power loss or fluctuation, even during high-vibration applications
• Makita 18 V Lithium-Ion is the world's largest cordless tool line-up powered by an 18 V Lithium-Ion slide-style battery
• Provides up to 35% more run time per charge compared to BL1830

The makita 18 v lxt? (r) lithium-ion battery charges faster and works longer than standard lithium-ion batteries, giving you and your cordless tools unmatched performance and productivity to take on the most demanding applications. the makita 4 ah battery, model bl1840b, combines more runtime (35% more runtime per charge than the makita bl1830 battery) with a category-leading charge time of only 40 mins so it spends more time working and less time sitting on the charger. for added convenience, it also features an on-board led charge level indicator to monitor battery charge. the 18 v lxt? (r) 4 ah battery is compatible only with star protection tools, indicated by the star symbol??? and/or yellow battery receiver under the tool.