What tools does the BL1820B fit?

It is an 18V LXT battery, so it fits Makita LXT 18V tools and chargers. The product information does not give a full compatibility list, so check your tool and charger documentation.

How long does one charge last?

Runtime depends on the tool and the load. As a compact pack it suits light-to-medium work; heavy cutting and grinding will drain it faster than Makita's larger packs.

Is it worth buying three packs?

Three packs let you keep working while one charges and spread them across several LXT tools. If you mostly run high-draw tools, larger-capacity packs give longer runtime per pack.

Does it need a special charger?

Yes. It charges on Makita LXT 18V chargers, which are not included. A charger for another brand or voltage will not work.

How much does each battery weigh?

About 1.167 pounds per unit, which is light for an 18V pack and keeps a drill or driver balanced.

Three BL1820B 18V LXT lithium-ion batteries. No charger or tool is included.

Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3

Best price now

$335.33at WalmartChecked 10 h ago

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Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3

Best price now

$335.33at WalmartChecked 10 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Lowest price today: $335.33 at Walmart (checked Nov 15, 2026).

Our take on the Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3

The Makita BL1820B is a rechargeable 18V lithium-ion battery in Makita's LXT line, sold here as a three-pack. It is a compact 2.0Ah-class pack, so it suits light-to-medium work in drills, drivers, saws and other LXT tools rather than all-day heavy cutting. Against Makita's larger 3.0Ah and 5.0Ah packs it is lighter and easier to swap, but it runs out sooner under load. Owners of LXT tools value the shared fit and the spare packs that keep a tool running while one charges.

Best forMakita LXT tool owners who want spare packsLight drilling, driving and trim workKeeping several tools running in rotationTradespeople already on the LXT platform

Pros

Fits the wide Makita 18V LXT tool line
Lithium-ion cells hold charge between uses
Light at about 1.17 lb per pack
Three packs let you swap instead of waiting to charge
Compact size suits drills, drivers and smaller saws

Cons

2.0Ah capacity drains quickly in high-draw tools
No capacity or compatibility list in the product information
Not the choice for long runtime in saws or grinders
Requires a Makita LXT charger, sold separately

Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3 prices at every store

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In stockSold by Supply the HomeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$335.33Free shippingChecked 10 h ago
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About the Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3

The Makita BL1820B is an 18V LXT lithium-ion tool battery for use with Makita cordless tools. It belongs to the Makita LXT line and is rechargeable, so it can be charged again after use.

This listing is for a pack of 3 batteries. The part number is BL1820B, and the product is also listed as the Makita 18V LXT Li-Ion Tool Battery.

Brand: Makita
Model: BL1820B
Voltage: 18V
Series: Makita LXT
Battery type: Lithium-ion, rechargeable
Pack size: 3 batteries
Unit weight: 1.167 pounds
Origin: Singapore

Questions and answers

What tools does the BL1820B fit?: It is an 18V LXT battery, so it fits Makita LXT 18V tools and chargers. The product information does not give a full compatibility list, so check your tool and charger documentation.
How long does one charge last?: Runtime depends on the tool and the load. As a compact pack it suits light-to-medium work; heavy cutting and grinding will drain it faster than Makita's larger packs.
Is it worth buying three packs?: Three packs let you keep working while one charges and spread them across several LXT tools. If you mostly run high-draw tools, larger-capacity packs give longer runtime per pack.
Does it need a special charger?: Yes. It charges on Makita LXT 18V chargers, which are not included. A charger for another brand or voltage will not work.
How much does each battery weigh?: About 1.167 pounds per unit, which is light for an 18V pack and keeps a drill or driver balanced.
What is in the box?: Three BL1820B 18V LXT lithium-ion batteries. No charger or tool is included.
Where is the Makita BL1820B 18V LXT Lithium-Ion Tool Battery - Pack of 3 cheapest?: At Walmart, for $335.33, as of our latest check.