Manufacturer | Makita |
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Place of Business | Whitby, ON L1N 7B7, CA |
Part Number | 196406-9 |
Product Dimensions | 15.24 x 12.7 x 7.62 cm; 1.32 kg |
Batteries | 2 Lithium Ion batteries required. (included) |
Item model number | 196406-9 |
Power Source | AC |
Voltage | 18 Volts |
Wattage | 72 watts |
Item Package Quantity | 1 |
Measurement System | Metric |
Included Components | twin pack 4.0Ah 18V batteries |
Batteries Included? | Yes |
Batteries Required? | Yes |
Battery Cell Type | Lithium Ion |
Battery Capacity | 4 Amp Hours |
Warranty Description | 1 year |
Item Weight | 1.32 kg |
Country of origin | Singapore |

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Makita BL1840B 2/Pk (196406-9) 18V (4.0 Amp) Li-Ion Battery Twin Pack
Purchase options and add-ons
Number of batteries | 2 Lithium Ion batteries required. (included) |
Brand | Makita |
Battery cell composition | Lithium Ion |
Battery capacity | 4 Amp Hours |
Recommended uses for product | Power Tool |
About this item
- 4.0 Ah battery offers 33-Percent increased run time versus 3.0 Ah batteries with no added weight or bulk
- NEW Battery fuel gauge indicates approximate remaining battery power
- NEW Battery Protection System provides Over-Discharge, Temperature and Current Protection for enhanced performance, battery cycle life and overall battery life (when used with STAR marked tool)
- Optimum Charging System utilizes 3 Active Controls (Current, Voltage and Temperature) to maximize battery life
- Built-In Memory Chip communicates with Charger CPU to optimize the charging process based on the unique conditions of each battery
Frequently bought together

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Product description
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-Percent 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.
From the manufacturer
Performance
Makita 18V LXT Lithium-Ion batteries deliver consistent power and run-time even in winter temperatures as low as -4° F (-20° C).
LED Charge Level
Integrated L.E.D. battery charge level indicator allows user to monitor approximate battery power remaining.
Durability
Shock absorbing liner and a sturdy polycarbonate structure enable the battery to hold up to the rigours of nearly any job site. 16 contact terminals make sure that the battery can provide constant, consistent power in extreme applications.
Rapid Charge
When paired with compatible rapid chargers (DC18RC, DC18RD, DC18RE), the Makita batteries have the fastest charge times in class so it spends more time working and less time sitting on the charger.



Product information
Technical Details
Additional Information
ASIN | B01N7IRZ1J |
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Customer Reviews |
4.6 out of 5 stars |
鶹 Rank |
|
Date First Available | Dec 16 2016 |
Feedback
Top Brand: Makita
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This Item ![]() Makita BL1840B 2/Pk (196406-9) 18V (4.0 Amp) Li-Ion Battery Twin Pack | Recommendations | |||||
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Price | $179.00$179.00 | $70.99$70.99 | $69.99$69.99 | $88.90$88.90 | $64.99$64.99 | -10%$71.09$71.09 Was: $78.99 |
Delivery | Get it by Saturday, Jun 21 | Get it by Saturday, Jun 21 | Get it by Saturday, Jun 21 | Get it by Saturday, Jun 21 | Get it by Saturday, Jun 21 | Get it by Saturday, Jun 21 |
Customer ratings | ||||||
Sold by | 鶹.ca | aobuli | Bonadget | Impact Distribution | XIONG GE | XIONG GE |
capacity | 4 amp hours | 5500 milliamp hours | 6000 milliamp hours | 4 amp hours | 5000 milliampere hour | 5000 milliamp hours |
battery quantity | 2 lithium ion | 2 lithium ion | 2 lithium ion | 1 lithium ion | 2 lithium ion, 2 nonstandard battery | 2 lithium ion |
voltage | 18 volts | 18 volts | 18 volts | 18 volts | 18 volts | 18 volts |
re-usability | — | Rechargeable | Rechargeable | Rechargeable | Rechargeable | Rechargeable |
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Customer reviews
Customers say
Customers like the battery's battery life, performance, and compatibility. They mention it lasts longer than the no-name ones, recharges fast, and provides good rendimento. However, some customers have mixed opinions on compatibility.
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Customers are satisfied with the battery life of the product. They mention it recharges fast, lasts longer than the no-name ones, and is a good value for a genuine Makita battery.
"Value for the$ and expect makita quality" Read more
"Very good quality compared with other non original manufacturers which mimics these...." Read more
"...Seem authentic and good. The package however says made in Singapore." Read more
"...by Makita and not only these are still in use today they're original Makita, would definitely buy again when needed." Read more
Customers are satisfied with the performance of the battery. They mention it works great, does a good yield, and is a useful wireless tool.
"Seems to be as good or better than the originals we got with the kit. Work great, and recharge just the same." Read more
"So far it works good. Have not used it long enough to mention longevity" Read more
"These work well an meet my needs. They do not fit all of the older tools I have (grinder) but work great on the main ones...." Read more
"These batteries work perfectly even they are now years old. Thanks," Read more
Customers have mixed opinions about the compatibility of the battery. Some mention it fits their tools no problem, while others say it's a struggle to fit into and out of any Makita tool.
"These work well an meet my needs. They do not fit all of the older tools I have (grinder) but work great on the main ones...." Read more
"Fits my tools no problem, decent price, recommend" Read more
"Labeled as OEM Makita batteries but all four are a struggle to fit into and out of any Makita tool." Read more
"These last much longer than the 3.0 and only slightly larger, the added battery gauge on the back is very helpful" Read more
Reviews with images

Top reviews from Canada
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Reviewed in Canada on March 5, 2024Verified PurchaseJ'ai acheté des batteries générique, pour économiser, mais à long terme, elles se sont avérés, chères compte tenu leur rendement et leur durabilité.moins d'un ans à usage modéré. J'ai de veilles batteries makita qui ont aux moins 8 ans et elle fonctionnent encore très bien. J'ai racheté un jeu de deux batteries 18 volts 4amp/hr. Pour augmenter mon autonomie. elles fonctionnent super bien. Méfiez vous des imitations. Vous allez économiser avec la vrai marque et la qualité est de loin supérieur aux batteries "cheaps".
- Reviewed in Canada on August 19, 2024Verified PurchaseWay cheaper than retail and it’s the same product. Same package and same sku. Why would I go to (insert major DYI store) when I can go on 鶹 and order it to my door.
- Reviewed in Canada on August 8, 2024Verified PurchaseI have tried knock-off ones and they offer 5.0 A.h but really deliver about 3. So I bought these ones and they just work as expected.
- Reviewed in Canada on September 10, 2023Verified PurchaseThe 2 pack of bl1840b that I received says made in Korea and further processed in Vietnam for those interested. Seem authentic and good. The package however says made in Singapore.
- Reviewed in Canada on March 5, 2023Verified PurchaseThese work well an meet my needs. They do not fit all of the older tools I have (grinder) but work great on the main ones.
They are bigger, and heavier, than I need as I work mostly in a Woodshop, with easy recharge access. As I use mostly on drill and driver, I could have used a lower amp one that is lighter. However, have used offsite and appreciate not having to carry a charger.
Works as advertised.
- Reviewed in Canada on April 24, 2024Verified PurchaseVery good quality compared with other non original manufacturers which mimics these. I regret purchasing other non Makita batteries for my Makita tools. These last longer and charge much faster.
- Reviewed in Canada on April 5, 2024Verified PurchaseI have purchased knock off batteries for my Makita tools and here I am going back to the true Makita batteries. Don’t waste you time or money o the knock offs.
- Reviewed in Canada on June 16, 2024Verified PurchaseThey seem to be the same as the original batteries. I use them on my drills and my weed whacker.