About
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.
Features
TECHNOLOGY

Tool users who unplug the cord with Makita 18V LXT® experience new levels of convenience, efficiency and productivity. Makita created the 18V Lithium-Ion cordless tool category in 2005, and today it is the world’s largest 18V cordless tool line-up. Makita’s leading technology gives tool users unmatched performance and breadth of line, with innovation in motor and battery technology that is obliterating industry standards – and leaving old thinking behind. With high amp-hour batteries, efficient brushed and brushless motors, and 36V (18V X2) LXT® technology, Makita 18V LXT® tools not only meet corded demands, they can exceed the performance of corded, all while remaining in a single cordless platform powered by the industry's fastest-charging 18V lithium-ion batteries. [Learn More]
Specs

RECOMMENDED
BL1430B
14.4V Lithium-Ion 3.0Ah Battery
ADP10
18V LXT® Adapter for XGT® Chargers
ADBL1840BDC1
Outdoor Adventure® 18V LXT® Battery and Charger Starter Pack (4.0Ah)
BL1840B-2
18V LXT® Lithium-Ion 4.0Ah Battery, 2/pk
BL1840BSCX3
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah) with bonus X-LOCK Grinder
BL1840BSCX3
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah) with bonus X-LOCK Grinder
BL1850B-2
18V LXT® Lithium-Ion 5.0Ah Battery, 2/pk
BL1840BSC2
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah)
BL4040DC1
40V max XGT® Battery and Charger Starter Pack (4.0Ah)
BL1820B-2
18V LXT® Lithium-Ion Compact 2.0Ah Battery, 2/pk
BL3626
36V Lithium-Ion 2.6Ah Battery
BL1860B-2
18V LXT® Lithium-Ion 6.0Ah Battery, 2/pk
BL1021B
12V max CXT® Lithium-Ion 2.0Ah Battery
BL4040-2
40V max XGT® 4.0Ah Battery, 2/pk
BL1415NA
14.4V Compact Lithium-Ion Battery
BPS01
18V LXT® Sync Lock™ Battery Terminal
BL1830B
18V LXT® Lithium-Ion 3.0Ah Battery
BL1021BDC1
12V CXT® Battery and Charger Starter Pack 2.0Ah
193156-7
9.6V Ni-MH 2.6Ah Battery 9134, Pod Style
BL4025
40V max XGT® 2.5Ah Battery
ADBL1840BDC1
Outdoor Adventure® 18V LXT® Battery and Charger Starter Pack (4.0Ah)
BL1840BDC2
18V LXT® Lithium-Ion Battery and Rapid Optimum Charger Starter Pack (4.0Ah)
BL1840BSC2
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah)
BL1850B
18V LXT® Lithium-Ion 5.0Ah Battery
BL1840BDC1
18V LXT® Battery and Charger Starter Pack 4.0Ah
193929-8
12V Makstar Ni-MH 2.0Ah Battery BH1220C
193949-2
Interchangeable Battery Adapter
BL4040F
40V max XGT® 4.0Ah High Power Battery
457041-1
14.4V LXT® Battery Cover
BL4040DC1
40V max XGT® Battery and Charger Starter Pack (4.0Ah)
BL0715
7.2V Lithium-Ion 1.5Ah Battery
194158-6
18V Ni-MH 2.6Ah Battery 1834, Pod Style, 2/pk
BL1850BDC1
18V LXT® Battery and Charger Starter Pack 5.0Ah
BL1830B-2
18V LXT® Lithium-Ion 3.0Ah Battery, 2/pk
BL1860B
18V LXT® Lithium-Ion 6.0Ah Battery
BL1820BDC1
18V Compact Battery and Rapid Charger Starter Pack 2.0Ah
BL1014
12V max Lithium-Ion Battery
BL1840B-3
18V LXT® Lithium-Ion 4.0Ah Battery, 3/pk
456128-6
CXT® Battery Cover
BL4040
40V max XGT® 4.0Ah Battery
BL1840B-3
18V LXT® Lithium-Ion 4.0Ah Battery, 3/pk
BL1840BSCX3
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah) with bonus X-LOCK Grinder
450128-8
LXT® Battery Cover
BL1041B
12V max CXT® Lithium-Ion 4.0Ah Battery
BL1850B-10
18V LXT® Lithium-Ion 5.0Ah Battery, 10/pk
BL3622A
36V Lithium-Ion Battery
BL4080F
40V max XGT® 8.0Ah Battery
BL1820BDC1
18V Compact Battery and Rapid Charger Starter Pack 2.0Ah
BL1820B
18V LXT® Lithium-Ion Compact 2.0Ah Battery
B7000-B-10
7.2V (1.3Ah) Ni-Cd Stick Battery, 10/pk
BL1830B-3
18V LXT® Lithium-Ion 3.0Ah Battery, 3/pk
412393-7
XGT® Battery Cover
BL1840BSCX3
18V LXT® Lithium-Ion Battery and Charger Starter Pack (4.0Ah) with bonus X-LOCK Grinder
193158-3
14.4V Ni-MH 2.6Ah Battery 1434, Pod Style
193740-8
24V Makstar Ni-MH 3.3Ah Battery BH2433
BCV03
36V Cordless Adapter
BL1460A
14.4V Lithium-Ion 6.0Ah Battery
BL1830B-10
18V LXT® Lithium-Ion 3.0Ah Battery, 10/pk
414938-7
Battery Cover
193931-1
12V Makstar Ni-MH 3.3Ah Battery BH1233C
BL4050F
40V max XGT® 5.0Ah Battery
ADBL1840B
Outdoor Adventure® 18V LXT® Lithium-Ion 4.0Ah Battery
BL1850BDC1
18V LXT® Battery and Charger Starter Pack 5.0Ah
BL1840BDC2
18V LXT® Lithium-Ion Battery and Rapid Optimum Charger Starter Pack (4.0Ah)
BL1860B-10
18V LXT® Lithium-Ion 6.0Ah Battery, 10/pk
BL1840BDC1
18V LXT® Battery and Charger Starter Pack 4.0Ah
BL1021BDC1
12V CXT® Battery and Charger Starter Pack 2.0Ah
193352-7
14.4V Makstar Ni-MH 2.0Ah Battery BH1420
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