Shop Products in USA
Makita
BL1830-2 18V LXT® Lithium-Ion 3.0Ah Battery, 2/pk
4.60
(1 reviews)
$170.14
Delivery Fri, Sep 12 Ships to CanadaOnly 15 left in stock - order soon.
Makita BL1840B-3 18V LXT® Lithium-Ion 4.0Ah Battery, 3/pk
3.70
(11 reviews)
$249.00
$14.20 delivery Sep 17 - 26 Only 1 left in stock - order soon.
POWTREE
4.0Ah BL1815 Battery Replacement for Makita 18V Battery Compatible with Makita BL1815 BL1860B BL1860 BL1820 1830B 1840B 1850B BL1815 Cordless Tools
3.80
(18 reviews)
$19.99
Delivery Wed, Sep 10 Ships to Canada
BatPower
2 Pack BL1860B 6.5Ah 18 Volt Lithium ion Battery for Makita 18V Battery 6.0Ah 5.0Ah 4.0Ah 3.0Ah 2.0Ah BL1860B-2 BL1850B BL1840B BL1830B BL1820B Compatible with Makita 18V LXT Battery
4.90
(12 reviews)
$--
BL1850B 18V 5.0Ah with 3Ah DC18RC, Replace for Makita 18V Battery Li-Ion LXT LXT400 BL1830B BL1850B BL1830 BL1840B
3.70
(7 reviews)
$--
Rapid Battery Charger DC18RC DC18RD DC18RA for Makita Tools 14.4V-18V LXT Li-ion Battery BL1815 BL1820 BL1830 BL1850 BL1860 BL1840 BL1430 BL1415
4.30
(422 reviews)
$22.70
Delivery Wed, Sep 10 Ships to Canada
3000mAh 18V Battery Replacement for Makita 18V Battery Compatible with 18 Volt BL1830B BL1840B BL1850B BL1860B BL1815B Battery (2 Packs)
4.30
(1 reviews)
$33.29
Delivery Wed, Sep 10 Ships to Canada
2 Pack 18V 5000mAh Lithium-ion Replacement Battery for Makita and 14.4V-18V Replacement Charger for Makita BL1830 BL1850 BL1840
4.50
(1 reviews)
$87.97
Delivery Wed, Sep 10 Ships to Canada
BL1850B 18V 5.0Ah Battery and Charger DC18RC with LED Replacement for Makita 18V Batteries BL1850B BL1830B BL1840B RMB100 BMR107 DMR106 DMR112 DMR200 BDF454Z BHP452 BML184 BML185
4.60
(3 reviews)
$41.96
Delivery Thu, Sep 11 Ships to Canada
1Pack 3.5Ah BL1815 18V Battery and Charger Combo for Makita 18V for 18Volt Battery Charger BL1830 BL1850B BL1840B BL1820 BL1850 for Makita Battery Replacement
4.50
(95 reviews)
$39.99
Delivery Fri, Sep 12 Ships to Canada
3.0ah BL1830 Replacement for Makita 18V Battery LXT Lithium-ion Compatible with 18 Volt Makita Battery BL1815 BL1820 BL1820b BL1830 BL1830b BL1840 BL1840b BL1850 BL1850b fit Cordless Tools
4.20
(114 reviews)
$21.99
Delivery Wed, Sep 10 Ships to Canada
Upgraded 3500mAh BL1815 18V LXT Li-ion Battery for BL1815 BL1830 BL1860 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 BL1860B Cordless Power Tools Series
3.90
(560 reviews)
$17.47
Delivery Wed, Sep 17 Ships to Canada
2 Pack 3.0Ah 18 Volt Battery Replace for Makita 18V Battery BL1815 BL1840B, Compatible with makita 18v Battery Chargers and Cordless Power Tools
0
(0 reviews)
$33.99
Delivery Wed, Sep 10 Ships to Canada
2 X BL1850B Battery 18V 5.0Ah with Charger 3Ah DC18RC, Replace for Makita 18V Battery LXT400 BL1860B BL1830B BL1850B BL1840B BL1830
4.50
(36 reviews)
$--
Replacement Battery for Makita 18v: 3.0Ah Lithium-ion Batteries Compatible BL1830B BL1815B BL1860B BL1850B BL1860 BL1850 BL1840B LXT (1-Packs)
4.10
(58 reviews)
$22.99
Delivery Thu, Sep 11 Ships to Canada
Makita BL1840B 18V LXT Lithium-Ion 4.0Ah
The Makita BL1840B 18V LXT Lithium-Ion 4.0Ah battery offers a balanced mix of lightweight handling and solid runtime. Featuring Star Protection Computer Controls™ and a built-in LED charge level indicator, it’s ideal for jobs that require agility and efficiency. Charging in just 40 minutes with Makita’s Rapid Optimum Charger, this pack is perfect for drills, impact drivers, and saws where weight and power must work together. Compatible with over 275 LXT tools, it’s a versatile choice for everyday use.
About Makita BL1840B 18V LXT Lithium-Ion 4.0Ah
Makita BL1840B 18V LXT Lithium-Ion 4.0Ah: The Everyday Workhorse
The Makita BL1840B 18V LXT Lithium-Ion 4.0Ah battery is the sweet spot for those who need a balance between extended runtime and lighter weight. It’s a versatile option that excels in day-to-day applications while still offering enough capacity for more demanding tasks.
Main Features
- Capacity: 4.0Ah for a balance of weight and runtime.
- Technology: Star Protection Computer Controls™ for battery safety.
- Charge Time: Approx. 40 minutes with Rapid Optimum Charger.
- Compatibility: Fits over 275 LXT tools.
Performance Benefits
Its moderate capacity means less weight on your tool, improving control for overhead or extended-use applications, while still offering substantial runtime for most jobs.
Charging Recommendations
- Charge soon after use for maximum availability.
- Avoid charging in extreme heat or cold.
- Use genuine Makita chargers for best results.
Storage Advice
Store in a cool, dry area and keep terminals clean. Partial charges are ideal for storage exceeding a few weeks.
Pro Tips
- Excellent for all-day use in cordless drills and drivers.
- Ideal backup battery when paired with a higher-capacity pack.
- Keep a spare in the charger to rotate throughout the day.
Mistakes to Avoid
- Using it for heavy demolition where a 5.0Ah or 6.0Ah would be better.
- Leaving it stored fully depleted.
- Forgetting to rotate batteries in multi-pack setups.
Conclusion
The Makita BL1840B is the perfect middle-ground battery—light enough for comfort, strong enough for most jobs, and fast to recharge, making it an essential addition to any LXT toolkit.
Shop Products in CANADA
Leyootoolelec
Replacement Battery for Makita 18v: 3Ah Lithium-ion Batteries Compatible BL1830B BL1815B BL1860B BL1850B BL1860 BL1850 BL1840B LXT (1-Packs)
4.40
(199 reviews)
CAD $36.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
CHAUNVEN
3000mAh 18V Battery Replacement for Makita 18V Battery Compatible with 18 Volt BL1830B BL1840B BL1850B BL1860B BL1815B Battery (2 Packs)
4.30
(308 reviews)
CAD $52.99
FREE delivery Thu, Sep 11Or fastest delivery Tue, Sep 9
2 Pack 18V 5.0Ah BL1850 Battery Replacement for Makita 18V Battery BL1830 BL1840 BL1860 BL1845 BL1815 BL1820 BL1860B 18V Batteries Compatible with Makita 18V Lithium ion Cordless Tools
4.40
(88 reviews)
CAD $65.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
VOLT1799
18V 5.0Ah Li-ion Replacement Battery for Makita 18V Batteries and Charger BL1850B BL1860 BL1850 BL1840 BL1830 BL1860B with 4.0A DC18RD Charger
3.90
(201 reviews)
CAD $99.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
Makita
196401-9 18V Li-Ion Battery BL1840B W/Charge Level Indicator
5.00
(5 reviews)
CAD $159.00
FREE delivery Fri, Sep 12Only 1 left in stock (more on the way).
2Pack 18V 5500mAh Lith-Ion Battery for Makita 18V Battery BL1850 BL1860 BL1840 BL1830 BL1820 BL1815 fit for All Makita 18V Li-ion Tool Batteries with LED Indicator
4.40
(528 reviews)
CAD $61.30
FREE delivery Thu, Sep 11Or fastest delivery Tue, Sep 9
ADVTRONICS
2 Pack 5.0Ah 18V BL1850B Replacement Battery Compatible with Makita 18V LXT Lithium-Ion Battery BL1840B BL1830B BL1830 BL1815 BL1815N BL1820 BL1830-2 BL1850B-2
4.00
(89 reviews)
CAD $59.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
2Packs Upgraded 5.0Ah 18V BL1850B with LED Replacement Lithium-ion Battery Compatible with Original 18 Volt Battery for Compatible Original 18V Lithium-Ion Cordless Power Tools
4.40
(1 reviews)
CAD $78.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
4 Packs Replacement for Makita 18v Battery 12.0Ah Compatible with Makita Battery 18v BL1840B BL1850B (12.0Ah) 4 Packs
0
(0 reviews)
CAD $169.00
FREE delivery Sep 29 - Oct 22
EICHXO
2 Pack 5.0Ah 18V Battery BL1850B Compatible with Makita BL1840B BL1830B BL1830 BL1815 BL1815N BL1820 LXT-400 Cordless Power Tools
4.70
(12 reviews)
CAD $59.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
Powilling
2Pack 5.0Ah Replacement Makita 18V Batteries + DC18RD Dual Port Battery Charger for Makita 18 Volt Battery BL1830 BL1840 BL1850
4.30
(232 reviews)
CAD $114.38
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8
Lizone
2 Pack 6.5Ah Lithium ion 18v Battery Replacement for Makita 18v Battery LXT 6.0Ah 5.0Ah 4.0Ah 3.0Ah BL1860B BL1850B BL1840B BL1830B
4.20
(29 reviews)
CAD $133.57
$38.98 delivery Sep 17 - 26Or fastest delivery Sep 11 - 15
ZLWAWAOL
2 Pack 12V Battery Replacement for Milwaukee M12 Battery 9.0Ah XC 48-11-2412 48-11-2440 48-11-2460, Compatible with M12 Fuel MLW2553-20, 2462-20, 2415-20 and MLW2504-20
4.50
(43 reviews)
CAD $55.96
FREE delivery Thu, Sep 11Or fastest delivery Tue, Sep 9
ARyee
18V 6Ah Replacement Lithium-ion Battery and Charger for Ridgid (B)
4.60
(3 reviews)
CAD $84.99
FREE delivery Thu, Sep 11Or fastest delivery Tue, Sep 9Only 3 left in stock.
Joiry
18V 3500mAh Ni-MH Battery Compatible with 48-11-2200, 48-11-2230, 48-11-2232, Circular and Reciprocating Saws 6310-20, Impact Wrenches 9078-20, Cordless Vacuums 0780-20, Worklights 49-24-0160
3.90
(13 reviews)
CAD $47.99
FREE delivery Thu, Sep 11Or fastest delivery Tomorrow, Sep 8