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

$11900
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  • 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
  • View More Details
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Price:
$11900

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. 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
  • Shop all Makita products






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  • California residents

Additional Resources

From the Manufacturer

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BrandMakitaMakitaMakitaMakita
Name18-Volt LXT Lithium-Ion High Capacity Battery Pack 3.0Ah with Fuel Gauge18-Volt LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge18-Volt LXT Lithium-Ion High Capacity Battery Pack 5.0Ah with Fuel Gauge18-Volt LXT Lithium-Ion 6.0 Ah Battery
Price
$10900
$11900
$14900
$16900
Ratings
(2130)
(2065)
(2873)
(2068)
Voltage (volts)18 V18 V18 V18 V
Battery Amp Hours3.04.05.06.0
Used with Equipment TypeJobsiteJobsiteJobsiteJobsite
Power Tool Accessory TypeBatteryBatteryBatteryBattery
Number of Total Batteries Included1111
Battery Power TypeLithium IonLithium IonLithium IonLithium Ion
View ProductView ProductView ProductView Product

Specifications

Dimensions

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

Details

Battery Amp Hours4.0Battery Power TypeLithium Ion
Charge time (min.)40Charger IncludedCharger Not Included
Color FamilyBlackNumber of Total Batteries Included1
Power Tool Accessory TypeBatteryPower Tool FeaturesNo Additional Features
RechargeableYesReturnable90-Day
Tools Product TypePower ToolUsed with Equipment TypeJobsite
Voltage (volts)18 V

Questions & Answers

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Customer Reviews

  • 4.8
    out of 2,065 reviews
  • 97%recommend this product
Filter by:
Showing 1-10 of 2,065 reviews
Hope the new BL1830B last 5 years like old BL1830
Purchased a brushless XRJ07ZB reciprocating saw. Purchased BL1830B-2, 2 pack of 3.0 amp hour batteries for $99 before tax. My 5 year old batteries still work. New batteries fit older LXT cordless ☆ tools. Similar numbers. New battery has indicator LED
by
    • Recommended
    I really like the Makita line of tools great quality and reliability. These batteries are great t...
    I really like the Makita line of tools great quality and reliability. These batteries are great they last a long time because of how the charger keeps them cool while charging. I got them a great price.
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    So far , have not been disappointed with their performance! I...
    So far , have not been disappointed with their performance! I use them daily in a Boom Rental facility and charge them once every 2-3 weeks!!!
    by
    • Verified Purchase
    Couldn’t recommend the 5.0 Ah batteries more. Although they are...
    Couldn’t recommend the 5.0 Ah batteries more. Although they are heavier- suck it up, it builds muscle ;). I love that I can count on the quick charge time and how long each battery lasts. Depending what tool, I can go 2-4 hours on one battery using constantly. I now have three of them and watch for deals. I couldn’t be happier.
    by
    • Verified Purchase
    5 found this review helpful
    All my battery powered tools are Makita so any time Home Depot has these 2pks on sale I grab them...
    All my battery powered tools are Makita so any time Home Depot has these 2pks on sale I grab them up. I love my Makita tools they have performed perfectly every time.
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    not heavy. Is fast at sinking screws. As long as u have 2 batteries can go all day
    not heavy. Is fast at sinking screws. As long as u have 2 batteries can go all day
    by
    • Verified Purchase
    • Recommended
    After the $150 sticker shock for this battery subsided, I have been completely satisfied with its...
    After the $150 sticker shock for this battery subsided, I have been completely satisfied with its longevity while using it to drive deck screws. Lasted a solid 6 hours with continuous use and the charger had it ready to go again in roughly 30 minutes. Highly recommend!
    by
    • Verified Purchase
    • Recommended
    4 found this review helpful
    The best saw I have...
    The best saw I have
    by
    • Verified Purchase
    Got these on clearance. Perfect size and run time. They...
    Got these on clearance. Perfect size and run time. They are the same size as the 3.0Ah ones but with a longer run time. Note: They will not work with older Makita tools that don't have the star on the battery receiver or yellow receiver and don't support the safety features of the newer batteries. Check the notches. Will not work with the bigger notch.
    by
    • Verified Purchase
    15 found this review helpful
    The batteries are great. Hope they last longer than the original ones that came with my drill. ...
    The batteries are great. Hope they last longer than the original ones that came with my drill. I built this cabinet using my makita drill with the NW batteries.
    by
    • Verified Purchase
    • Recommended
    2 found this review helpful
    Showing 1-10 of 2,065 reviews