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Makita (BL1840B) 18V LXT® Lithium - Ion 4.0Ah Battery - Pacific Power Tools

Makita (BL1840B) 18V LXT® Lithium-Ion 4.0Ah Battery

Makita

SKU BL1840B
Low stock
Save $70.00 Save $70.00
$149.00
$149.00 - $149.00
$149.00
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$79.00 - $79.00
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  • Integrated L.E.D. battery charge level indicator allows user to monitor battery charge

  • Reaches full charge in 40 minutes or less

  • Provides up to 35% more run time per charge compared to BL1830

  • Compatible only with Makita 18V Lithium-Ion tools with Star Symbol™ and/or Yellow Battery Receivers

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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.

 

CA Prop 65 Warnings

  • Integrated L.E.D. battery charge level indicator allows user to monitor battery charge
  • Provides up to 35% more run time per charge compared to BL1830
  • Reaches full charge in 40 minutes or less
  • Compatible only with Star Protection tools, indicated by the Star Symbol™ and/or Yellow Battery Receiver under the tool
  • Battery delivers consistent power and run time in extreme temperatures, even in winter (-4°F/-20°C)
  • 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
  • Battery resists self-discharge and remains ready for use even after long periods of storage
  • Makita 18V Lithium-Ion is the world’s largest cordless tool line-up powered by an 18V Lithium-Ion slide-style battery
  • Makita technology delivers category-leading charge time so the battery spends more time working and less time sitting on the charger (charger not included)
  • 3-year limited warranty

System : 18V LXT®
Voltage : 18V
Battery Capacity (Ah) : 4.0Ah
Battery Type : Lithium-Ion
Battery Charge Time (minutes) : 40
Package Quantity : 1
Packaged Depth (in) : 4.25"
Packaged Height (in) : 6.5"
Packaged Width (in) : 6.75"
Shipping Weight : 1.5 lbs.
UPC Code : 088381-463898

Why Makita

Why Makita

Makita is a global leader in professional-grade power tools, known for precision engineering, durable construction, and industry-ready performance. Founded in 1915 in Japan, Makita has built its reputation on innovation—developing advanced motor technology, efficient battery platforms, and rugged tools trusted by contractors worldwide.

The 18V LXT® system, the world’s largest cordless tool lineup powered by a single battery platform, is central to Makita’s commitment to productivity and versatility on the jobsite. Whether cutting, fastening, drilling, grinding, or cleaning, Makita tools deliver the power, balance, and reliability demanded by professionals who work every day.

Makita continues to drive the industry forward with brushless motors, dust-management solutions, outdoor power equipment, and a consistently expanding cordless lineup—all backed by a legacy of craftsmanship and performance.

Learn More about Makita

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