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Deal.ai › Makita
Makita
Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge

Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge

5(3 ratings)

Best price now

$85.00at Power Homes ProChecked 11 h ago

46% under what the other stores charge

Compared across 7 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $85.00 at Power Homes Pro (checked Nov 15, 2026).
  • Checked at 7 stores.

Our take on the Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge

The Makita BL1850B is a 5.0Ah 18V LXT lithium-ion pack, the mid-capacity battery in Makita's LXT line. It has a four-stage LED fuel gauge on the front so you can check charge without a tool. It fits LXT tools with the star symbol or yellow battery receiver, which carry Makita's Star Protection electronics. Against the smaller 3.0Ah and 4.0Ah packs it runs longer; against the 6.0Ah it is lighter and cheaper to own, and owners generally rate the LXT packs for long service life.

Best forOwners of Makita 18V LXT toolsTradespeople who want longer runtime than a 3.0Ah packReplacing a worn or failed LXT batteryKeeping a spare charged pack in the van
Pros
  • 5.0Ah capacity gives solid runtime for drills, drivers and saws
  • Onboard LED fuel gauge shows charge at a glance
  • Star Protection electronics work with compatible LXT tools
  • Lighter than the 6.0Ah pack
  • Fits the whole 18V LXT range with the star or yellow receiver
Cons
  • Battery only: no charger or tool included
  • Does not fit older LXT tools without the star or yellow receiver
  • No retail box, so it arrives as a loose pack
  • Heavier than 3.0Ah and 4.0Ah packs
  • Charging time is longer than small packs on a standard charger

Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge prices at every store

  • Power Homes ProNew

    In stockReturn policy

    $85.00Checked 11 h ago
    Visit Power Homes Pro
  • CSC - Contractor Supply CompanyNew

    In stockReturn policy

    $95.00Checked 11 h ago
    Visit CSC - Contractor Supply Company
  • Self Rescue TacticalNew

    In stockReturn policy

    $157.00Checked 11 h ago
    Visit Self Rescue Tactical
  • Pacific Power ToolsNew

    In stockReturn policy

    $169.00Checked 11 h ago
    Visit Pacific Power Tools
  • Fasteners IncNew

    In stockReturn policy

    $169.00Checked 11 h ago
    Visit Fasteners Inc
  • The Home DepotNew

    In stock

    $169.00Free shippingChecked 11 h ago
    Visit The Home Depot
  • AmazonNew

    Availability unknown

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

    $91.50Free shippingChecked 11 h ago
    Visit Amazon

Store links may earn us a commission.

Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge price history

Lowest price we've seen: $91.50 on Nov 15 at Amazon. Tracked across 2 stores since Nov 15.

What reviewers say

Owners of Makita LXT tools rate the 5.0Ah pack as a dependable workhorse, with the fuel gauge and runtime called out as the main draws. Complaints center on weight and on packs that fail early.

What people mention
  • RuntimePraisedOwners say the 5.0Ah pack lasts noticeably longer than the 3.0Ah and 4.0Ah packs in drills and saws.
  • Fuel gaugePraisedThe four-stage LED indicator is described as accurate and useful for checking charge before a job.
  • WeightMixedSome users find the pack heavy in compact tools, though others accept it for the extra runtime.
  • DurabilityMixedMany packs last years, but some owners report early failures.
  • Charging timeCriticisedCharging a 5.0Ah pack takes longer than smaller packs on standard chargers.

About the Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge

The Makita BL1850B is an 18V LXT lithium-ion battery with a 5.0Ah capacity. It adds runtime to a compatible Makita LXT cordless tool collection.

An onboard LED charge indicator shows the charge level. The battery works with Makita LXT Star Protection tools that have a star symbol and/or a yellow battery receiver.

Model
BL1850B
Brand
Makita
Voltage
18V
Capacity
5.0Ah
Battery type
Lithium-ion
Battery system
LXT
Charge indicator
Onboard LED
Compatibility
Makita LXT Star Protection tools with a star symbol and/or yellow battery receiver
In the box
One battery only; tools and charger not included
Condition
Brand new, without the original retail box

Questions and answers

Does this battery fit all Makita 18V tools?
It fits LXT tools with the star symbol or a yellow battery receiver. Older LXT tools without those markings are not supported.
Is a charger included?
No. The pack ships alone, so you need a Makita LXT charger you already own.
How does it compare with the 6.0Ah pack?
The 5.0Ah is lighter and runs a bit less per charge. The 6.0Ah suits heavy cutting and drilling; the 5.0Ah balances weight and runtime.
What does the fuel gauge show?
A four-stage LED display on the pack shows remaining charge when you press the check button.
Can I use it with Star Protection tools?
Yes. The pack carries Star Protection electronics that communicate with compatible tools and chargers.
Is this the same as the BL1830B?
No. The BL1830B is a 3.0Ah pack; this is the 5.0Ah BL1850B with more runtime.
Where is the Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge cheapest?
At Power Homes Pro, for $85.00, 46% 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 with Fuel Gauge?
Rated 5 out of 5 from 3 ratings.
Where can I buy the Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge?
7 stores we checked sell it, including Power Homes Pro, Pacific Power Tools, Fasteners Inc, CSC - Contractor Supply Company, Self Rescue Tactical.

Stores we've priced the Makita BL1850B 18V LXT 5.0Ah Lithium-Ion Battery with Fuel Gauge at

  • The Home Depot deals and prices

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