18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with LED Charge Level Indicator (2-Pack)
$21900
Pay $194.00 after $25 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card- Reaches full charge in 40 minutes or less
- LED charge level indicator allows user to monitor battery charge
- Battery has a 3-year limited warranty from date of purchase
- View More Details
Product Details
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, model BL1840B, 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 on-board LED charge level indicator to monitor battery charge. The 18-Volt LXT 4.0Ah battery 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
- Click here for more information on Electronic Recycling Programs
- Return Policy
- California residents
Additional Resources
From the Manufacturer
Specifications
Questions & Answers
133Questions
Q:Why is the 3Ah more expensive than the 4Ah?
by|Mar 19, 2023
1 Answer
Q:Will these work in the mower model XML03CM1
by|Mar 13, 2023
1 Answer
Q:Is this compatible with BHP452? My friend has this battery and it fits my drill but is it ok to use?
by|Mar 9, 2023
1 Answer
Q:Is this battery compatible with Makita DC18RA T CHARGER
by|Mar 8, 2023
2 Answers
Showing 1-4 of 133
Nov 19, 2022
Great Batteries that Last a Long Time
I am impressed with how long these 5ah batteries last. If you only have these two you will be able to charge one full before the other ones needs charging.
by
Dec 23, 2021
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
Apr 9, 2021
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
Mar 19, 2021
Refreshed old drill with new battery
This set of 4.0Ah batteries works with my cordless drill (BHP452) and impact driver (BTD142) from 2008. No modifications needed to fit the battery. So much better than the stock 1.5Ah battery.
by
Customer review from homedepot.caJan 30, 2021
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
Aug 5, 2020
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
Jul 8, 2020
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
Jul 7, 2020
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
May 29, 2020
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
Aug 15, 2019
The best saw I have...
The best saw I have
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