Internet #206605095

Model # BL1840B

Store SO SKU #1001606830

0088381463898

Makita

18-Volt LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge

  • Extended Run Time; Powers 18V LXT and 18V Compact Tools
  • Powers the expanding 18V LXT line of cordless tools
  • Battery has a 3-year limited warranty from date of purchase
$ 109 00
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Frequently Bought Together

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Product Overview

  • Extended Run Time; Powers 18V LXT and 18V Compact Tools
  • Powers the expanding 18V LXT line of cordless tools
  • Battery has a 3-year limited warranty from date of purchase
The Makita 18-Volt 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 4.0Ah 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 LED charge level indicator to monitor battery charge. The 18-Volt 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 18-Volt 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.
  • Integrated LED 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
  • 16 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 18-Volt lithium-ion is the world’s largest cordless tool line-up powered by an 18-Volt 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






  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Extended Run Time; Powers 18V LXT and 18V Compact Tools
  • Powers the expanding 18V LXT line of cordless tools
  • Battery has a 3-year limited warranty from date of purchase
Model #: BL1840B
Internet #: 206605095

The Makita 18-Volt 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 4.0Ah 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 LED charge level indicator to monitor battery charge. The 18-Volt 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 18-Volt 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.

  • Integrated LED 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
  • 16 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 18-Volt lithium-ion is the world’s largest cordless tool line-up powered by an 18-Volt 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






  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

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Specifications

Dimensions

Product Height (in.)
3.25
Product Length (in.)
0.00 in
Product Width (in.)
6.5 in

Details

Battery Amp Hours
4.0
Battery Power Type
Lithium Ion
Charge time (min.)
40
Color Family
Black
Cordless/ Corded
Cordless
Number of Batteries Included
1
Power Tool Accessory Type
Battery
Power Tool Features
No Additional Features
Rechargeable
Yes
Returnable
90-Day
Tools Product Type
Power Tool
Voltage (volts)
18

Specifications

Dimensions

Product Height (in.)
3.25
Product Length (in.)
0.00 in
Product Width (in.)
6.5 in

Details

Battery Amp Hours
4.0
Battery Power Type
Lithium Ion
Charge time (min.)
40
Color Family
Black
Cordless/ Corded
Cordless
Number of Batteries Included
1
Power Tool Accessory Type
Battery
Power Tool Features
No Additional Features
Rechargeable
Yes
Returnable
90-Day
Tools Product Type
Power Tool
Voltage (volts)
18

Questions & Answers

Hi is this price for two batteries or one battery

Asked by: Givo
It's a 2-pack. Two batteries are included for the advertised price.
Answered by: Aerokats
Date published: 2019-03-20

I have the oilder Makita (non Star) power tools and one of my batteries just gave out. What can ...

I have the oilder Makita (non Star) power tools and one of my batteries just gave out. What can I do to replace these older batteries as the new Star batteries are not compatible? As I have multiple machines upgrading them would be very costly and not what I am considering as they still work great, I just need new batteries. Thanks,
Asked by: Bud
i found the new 4 hr star batteries do work on my older non star Makita drills. it the older 2 hr batteries that will not work in the newer star tools
Answered by: Jackson
Date published: 2018-10-23

Will these batteries charge on my DC18RA charger?

Will these batteries charge on my DC18RA charger?
Asked by: Willie
Yes they do.
Answered by: 2R
Date published: 2018-04-28

Will these work with the BTD142 impact and BDF452 driver?

Asked by: Dillan
they work in my drill and impact driver
Answered by: Jackson
Date published: 2018-10-23
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Customer Reviews

18-Volt LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge is rated 4.9 out of 5 by 35.
Rated 5 out of 5 by from The batteries are well worth the price. One 4Ah battery... The batteries are well worth the price. One 4Ah battery plus half a full charge of the other ran my multi tool for enough time to cut out a 4’x6’ wood window frame that was hard as rock away from a stucco exterior wall. They charged quickly and did not get hit on the charger or in the tool.
Date published: 2019-05-28
Rated 5 out of 5 by from Used to power a reciprocating saw (to cut tree roots), or a drill. Plenty of power and also plen... Used to power a reciprocating saw (to cut tree roots), or a drill. Plenty of power and also plenty of power-up time running the tools.
Date published: 2019-03-19
Rated 5 out of 5 by from Great batteries and an affordable price!!.. ... Great batteries and an affordable price!!..
Date published: 2019-04-24
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-02-07
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2019-02-07
Rated 5 out of 5 by from Love Makita tools! Love Makita tools!
Date published: 2019-03-12
Rated 5 out of 5 by from been using the 2 hr batteries on the drills for years and wanted a longer lasting battery for som... been using the 2 hr batteries on the drills for years and wanted a longer lasting battery for some time when I purchased the circular saw that had a 4 hr battery included. the 4 hr batteries are superior and not a bad price for a set of 2.
Date published: 2018-10-23
Rated 4 out of 5 by from these batteries are are great a lil bit expensive but well worth the money ive only had them for ... these batteries are are great a lil bit expensive but well worth the money ive only had them for about a month but I use them daily in my cordless trim saw and my multi tool and the battery charge last all day even when ripping 3/4 in. plywood and cutting 2x4.
Date published: 2017-06-13
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