Makita BL1840B-2 18V LXT Lithium-Ion 4.0Ah Battery Twin Pack, Black

★★★★★ 4.1 74 reviews

US$12.00
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US$12.00
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Management number 223817664 Release Date 2026/05/09 List Price US$12.00 Model Number 223817664
Category

The Makita 18V LXT 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 4.0 Ah battery combines more run time (35% more run time per charge than the Makita BL1830 battery) with a category-leading charge time of only 40 minutes, so it spends more time working and less time sitting on the charger. For added convenience, it also features an L.E.D. charge level indicator to monitor battery charge. The 18V LXT 4.0Ah battery (BL1840) is compatible only with Star Protection tools, indicated by the Star Symbol and/or Yellow Battery Receiver under the tool. Makita 18V Lithium-Ion batteries resist self-discharge so they're ready for use even after long periods of storage. The Makita Rapid Optimum Charger (sold separately) is a smart-charging system that communicates with the battery during the charging process to monitor current, voltage and temperature. This advanced charging technology helps optimize battery life and deliver a faster charge. In addition, the Charger has a built-in fan to cool the battery for faster and more efficient charging, even in hot weather conditions. For improved tool performance and extended battery life, Makita created STAR Protection Computer Controls. STAR Protection is communication technology that allows the tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating. Makita, the innovation leader in cordless tool technology, has the world's cordless tool line-up powered by an 18V lithium-ion slide-style battery.

  • Integrated L.E.D. battery charge level indicator allows user to monitor battery charge
  • 18V LXT Lithium-Ion 4.0Ah battery BL1840B provides up to 35% more run time per charge compared to BL1830
  • 18V LXT Lithium-Ion 4.0Ah battery BL1840B reaches full charge in 40 minutes or less
  • 18V LXT Lithium-Ion 4.0Ah battery BL1840B is compatible with 18V LXT Tools
  • Compatible only with Star Protection tools, indicated by the Star Symbol and/or Yellow Battery Receiver under the tool
ASIN B015PVD9OC
Size 4.0Ah
Color Black
Style 2-Pack
Voltage 120
Batteries 2 Lithium Ion batteries required. (included)
Item Weight 5 ounces
Part Number BL1840
Manufacturer Makita
Battery Capacity 4 Amp Hours
Battery Cell Type Lithium Ion
Item model number BL1840B-2
Batteries Included Yes
Batteries Required Yes
Product Dimensions 3 x 6.75 x 9.75 inches
Included Components (2) 18V LXT® Lithium-Ion 4.0Ah Battery
Warranty Description 3-year limited warranty
Item Package Quantity 1
Is Discontinued By Manufacturer No

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4.1 out of 5
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74 ratings | 30 reviews
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