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Deal.ai › Makita
Makita
Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery

Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery

5(6 ratings)

Best price now

$77.97at eBayChecked 2 h ago

54% under what the other stores charge

Compared across 25 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Lowest price today: $77.97 at eBay (checked Nov 14, 2026).
  • Checked at 25 stores.

Our take on the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery

The Makita BL1850B is a 5.0Ah 18V LXT lithium-ion pack, the mid-capacity workhorse of Makita's LXT line. It roughly doubles the runtime of the 3.0Ah BL1830 and charges in about 45 minutes on a compatible charger. A four-LED gauge shows charge level on the pack itself. It suits owners of Makita 18V LXT tools who want longer runs between swaps; rivals like Makita's 6.0Ah pack trade more runtime for more weight, and third-party packs undercut it on capacity claims that owners often doubt.

Best forMakita 18V LXT tool ownersLonger jobs away from a chargerReplacing worn or lower-capacity packsSharing one battery across several LXT tools
Pros
  • 5.0Ah capacity gives long runtime per charge
  • Charges in about 45 minutes on compatible chargers
  • Four-LED charge gauge on the pack
  • Fits the whole Makita 18V LXT tool range
  • Star Protection circuitry guards against overload and overheating
Cons
  • Heavier than 3.0Ah and 4.0Ah packs
  • Costs more than lower-capacity packs
  • Needs a Makita charger; not a universal fit
  • Third-party packs are cheaper, with less reliable cells

Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery prices at every store

  • VM HardwareNew

    In stockReturn policy

    $98.50Checked Nov 7
    Visit VM Hardware
  • Benchmark Tool & SupplyNew

    In stockReturn policy

    $99.00Checked Nov 7
    Visit Benchmark Tool & Supply
  • TaskHoltNew

    In stockReturn policy

    $135.18Checked Nov 7
    Visit TaskHolt
  • Tool KingdomNew

    In stockReturn policy

    $149.00Checked Nov 7
    Visit Tool Kingdom
  • The Home DepotNew

    In stock

    $169.00Free shippingChecked 2 h ago
    Visit The Home Depot
  • ToolupNew

    In stockReturn policy

    $169.00Checked Nov 7
    Visit Toolup
  • Jobsite Power ToolsNew

    In stockReturn policy

    $169.00Checked Nov 7
    Visit Jobsite Power Tools
  • The Power Tool StoreNew

    In stockReturn policy

    $169.00Checked Nov 7
    Visit The Power Tool Store
  • KPaul IndustrialNew

    In stockReturn policy

    $169.00Checked Nov 7
    Visit KPaul Industrial
  • HBG Tools & SupplyNew

    In stockReturn policy

    $169.99Checked Nov 7
    Visit HBG Tools & Supply
  • Dynamite ToolNew

    In stockReturn policy

    $179.00Checked Nov 7
    Visit Dynamite Tool
  • Northern ToolNew

    In stock

    $169.00+ $10.99 shippingChecked 2 h ago
    Visit Northern Tool
  • Grainger Industrial SupplyNew

    In stock

    $190.53+ $11.69 shippingChecked 2 h ago
    Visit Grainger Industrial Supply
  • Heyden SupplyNew

    In stock

    $218.00Free shippingChecked 2 h ago
    Visit Heyden Supply
  • eBayNew

    Availability unknownSold by we_are_tools

    $77.97Checked 2 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $93.00Free shippingChecked 2 h ago
    Visit Amazon
  • RAM Welding SupplyNew

    Availability unknown

    $129.00Checked 2 h ago
    Visit RAM Welding Supply
  • ArborNew

    Availability unknown

    $129.00Checked 2 h ago
    Visit Arbor
  • ZoroNew

    Availability unknown

    $169.00Checked 2 h ago
    Visit Zoro
  • meslifesafety.comNew

    Availability unknown

    $169.95Checked 2 h ago
    Visit meslifesafety.com
  • ImperialSupplies.comNew

    Availability unknown

    $190.53Checked 2 h ago
    Visit ImperialSupplies.com
  • J Harlen Co.New

    Availability unknown

    $201.54Checked 2 h ago
    Visit J Harlen Co.
  • Nassau National CableNew

    Availability unknown

    $205.05Checked 2 h ago
    Visit Nassau National Cable
  • Radwell.comNew

    Availability unknown

    $216.00Checked 2 h ago
    Visit Radwell.com
  • Penn Tool Co.New

    Availability unknown

    $259.92Checked 2 h ago
    Visit Penn Tool Co.

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Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery price history

Lowest price we've seen: $77.97 on Nov 14 at eBay. Tracked across 15 stores since Nov 14.

What reviewers say

Owners rate the BL1850B as a dependable, long-running pack that charges quickly and holds up over years of use. Complaints center on weight and on the cost of genuine Makita batteries.

What people mention
  • RuntimePraisedOwners say a charge lasts noticeably longer than with 3.0Ah packs.
  • Charge timePraisedReviewers note it refills quickly on Makita's fast chargers.
  • WeightMixedSome find the pack noticeably heavier in hand tools than smaller packs.
  • DurabilityPraisedMany report the pack keeps working for years of regular use.
  • ValueCriticisedOwners often call genuine Makita packs costly next to third-party options.

About the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery

The Makita BL1850B is an 18V LXT lithium-ion battery with a 5.0 Ah capacity. It offers more runtime than lower-capacity packs such as the BL1830.

It charges fully in about 45 minutes or less with a compatible charger. A built-in LED display shows the current charge level, so you know when to swap or recharge. Star Protection Computer Controls monitor for overloading, over-discharge and overheating to help protect the battery and the tool.

The battery is built for job sites. It has an impact-resistant outer case, a shock-absorbing inner liner and enough contacts to keep power steady under vibration and stress. It also holds power better in cold temperatures than many lower-capacity packs.

System
18V LXT
Voltage
18 V nominal
Capacity
5.0 Ah
Charge time
About 45 minutes with a compatible charger
Weight
About 680 g (1.5 lb), battery only
Charge indicator
Built-in LED charge level display
Protection
Star Protection Computer Controls
Warranty
3-year limited warranty

Questions and answers

How does the BL1850B compare with the BL1830?
It has 5.0Ah against the BL1830's 3.0Ah, so it runs substantially longer per charge. It is also heavier and costs more.
How long does it take to charge?
About 45 minutes or less on a compatible Makita charger. Slower chargers take longer.
Does it fit all Makita 18V tools?
Yes. It uses the 18V LXT slide mount, so it fits LXT drills, saws, drivers and other LXT tools. It does not fit Makita's 12V or XGT lines.
Is the charge indicator on the battery?
Yes. A four-LED gauge on the pack shows the current charge level when you press the check button.
What is Star Protection?
It is Makita's circuitry that communicates with the tool and charger to guard against overload, over-discharge and overheating.
Is it worth choosing over the 6.0Ah pack?
The 5.0Ah is lighter and still long-running. The 6.0Ah gives more runtime but adds weight, which matters most in hand-held tools.
Where is the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery cheapest?
At eBay, for $77.97, 54% under what the other stores charge, as of our latest check.
What do buyers say about the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery?
Rated 5 out of 5 from 6 ratings.
Where can I buy the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery?
25 stores we checked sell it, including The Home Depot, Amazon, eBay, RAM Welding Supply, Arbor.

Stores we've priced the Makita BL1850B 18v LXT 5.0Ah Lithium-Ion Battery at

  • Arbor deals and prices
  • Grainger Industrial Supply deals and prices
  • Northern Tool deals and prices
  • The Home Depot deals and prices
  • Zoro deals and prices

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