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18-Volt LXT Lithium-Ion 4.0Ah Battery (2-Pack)
  • Makita
  • Model BL1840B-2
  • Internet #206605904
  • Store SO SKU #1002334717

18-Volt LXT Lithium-Ion 4.0Ah Battery (2-Pack)

$18900 /each
Discontinued Model:

Model # BL1840-2

Internet #205579204

Store SO SKU #1001020072

Makita 18-Volt LXT 4.0Ah Lithium-Ion Battery (2-Pack)
0088381430180

Discontinued Makita

18-Volt LXT 4.0Ah Lithium-Ion Battery (2-Pack)

  • Up to 35% more run time compared to the 18-Volt 3.0Ah battery
  • Charges in 40 minutes or less with Makita Rapid Optimum Charger
  • Compatible only with Star Protection tools

Frequently Bought Together

Product Overview

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. 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. 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 18-Volt lithium-ion slide-style battery.

California residents: see   Proposition 65 information

  • Provides up to 35% more run time per charge compared to the 18-Volt 3.0Ah battery (BL1830)
  • Reaches a full charge in 40 minutes or less on the Makita rapid optimum charger (sold separately)
  • Battery delivers consistent power and run time in extreme temperatures, even in winter (-4°F/-20°C)
  • Star protection computer controls allow the tool and battery to monitor conditions during use and exchange data in real time to protect against overloading, over-discharging and overheating
  • Makita rapid optimum charger (sold separately) communicates with the battery’s built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperature
  • 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
  • Compatible with Makita 18-Volt LXT and 18-Volt compact cordless tools with the star symbol
  • Makita 18-Volt lithium-ion is the world’s largest cordless tool line-up powered by an 18-Volt lithium-ion slide-style battery
  • 3-year limited warranty



  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Customer Questions & Answers

Does Makita warrant these?

Do these batteries come with a factory warranty from Makita? Also, can I purchase an extended warranty from Home Depot?
Asked by: Gyrodork
Yes
Answered by: BobofZ
Date published: 2016-01-20

Are these batteries compatible with the DC18RC charger

Asked by: Erick
Yes, the Makita 18-Volt LXT 4.0Ah Lithium-Ion Battery (BL1840) is compatible with the 18-Volt Lithium-Ion Rapid Optimum Battery Charger (DC18RC).
Answered by: MakitaTeam
Date published: 2016-04-19

when will these be in stock ?

8V LXT Lithium-Ion 4.0 Ah Battery (BL1840)
Asked by: coco
Order the set on line, ship to the store.
Answered by: BobofZ
Date published: 2016-01-20

you get two for the price

you get two batterys for the prices how long for delivery
Asked by: jack
Thank you for your recent inquiry with The Home Depot, Jack. Delivery for these batteries normally takes 5 - 7 business days. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2016-05-05
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Customer Reviews

18-Volt LXT 4.0Ah Lithium-Ion Battery (2-Pack) is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from Batteries I was trying to buy 5amp batteries, however they were not available so I purchased the 4amp ones instead. All my past batteries were 3amp & I never had problems with them until I bought the brushless weed wacker & needed more run time to get around the yard. They get it done!!
Date published: 2016-01-19
Rated 5 out of 5 by from love my new batteries the new batteries last so much longer it increases work time and productivity and not to forget mental relaxation of having another one charged before the first one dies !!!
Date published: 2016-06-24
Rated 5 out of 5 by from good quality The batteries hold charges for a very long time and easy to load
Date published: 2015-05-12
Rated 5 out of 5 by from Needed power Great power. Use for work. Prompt service. Home Depot has what I need.
Date published: 2016-09-06
Rated 5 out of 5 by from works great! Some reviews online state these may not work with older 18v Makita tools. Thankfully they work in all 7 of mine! A significant difference in run time. If you're running these tools a lot, these batteries will pay for themselves in no time! There's rumor of a 5aH on the horizon.....
Date published: 2015-02-18
Rated 5 out of 5 by from Why Makita, why? Purchased these batteries for an upgrade from my 3.0 Ah and just my luck, these batteries are not compatible w/ my BHP454 drill. They are, however, compatible w/ my BTD141 impact drill
Date published: 2015-07-26
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