Makita BL1820B 18V LXT 2 Ah Lithium-Ion Slide Battery

Makita Model: mktnbl1820b

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Makita BL1820B 18V LXT 2 Ah Lithium-Ion Slide Battery Makita Model: mktnbl1820b
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Product Features & specs :

Makita BL1820B 18V LXT 2 Ah Lithium-Ion Slide Battery


Charges faster and works longer than standard 18V compact lithium-ion batteries, giving you and your Makita cordless tools unmatched performance and productivity in a compact size. Delivers up to 50% more run time per charge than the Makita BL1815 18V Compact battery, with a fast charge time of only 25 minutes for increased efficiency. Resists self-discharge so it's 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 delivers 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.


  • Integrated LED battery charge level indicator allows user to monitor battery charge.

  • Provides up to 50% more run time per charge compared to BL1815

  • Compatible only with Star Protection tools, indicated by the Star Symbol and/or Yellow Battery Receiver under the tool

  • Reaches full charge in 25 minutes or less

  • Battery delivers consistent power and run time in extreme temperatures, even in winter (-4   F/-20   C)

  • Equipped with Star Protection Computer Controls to protect against overloading, over-discharging and over-heating

  • Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect the battery

  • Sixteen contact terminals maintain a constant connection with the tool to help prevent power loss or fluctuation, even during high-vibration applications

  • Battery resists self-discharge and remains ready for use even after long periods of storage

  • Makita technology delivers category-leading charge time so the battery spends more time working and less time sitting on the charger (charger not included)

What’s Included:

  • (1) 18V LXT 2 Ah Lithium-Ion Slide Battery - BL1820B


2.87 in x 2 in

Compatible Chargers

18V LXT Chargers

Compatible With

18V LXT Power Tools



Wifi compatibility


Batteries Included


Battery Type


Bluetooth Compatibility


Compatible Models

18V LXT Power Tools

Charger Included




Case Included


Recharge Time

25 Minutes

Battery Amp Hour

2 Ah



Battery Style






Battery System



2 in.


2.88 in.


0.85 lbs.

Warranty Term

3 Year

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Q & A :


Warranty Information

Makita LXT Lithium-ion Tool Warranty

Every Makita® Lithium‐Ion Power Tool is thoroughly inspected and tested before leaving the factory. If you are not satisfied with any Makita Lithium‐Ion tool within 30 days of purchase, return it and Makita will provide, at Makita's option, a replacement or refund. Each Makita Lithium‐Ion Power Tool, Battery and Charger is warranted to be free of defects from workmanship and materials for the period of THREE YEARS from the date of original purchase. Should any trouble develop during the three‐year period for the Lithium‐Ion Power Tool, Battery and/or Charger, return the COMPLETE Power Tool, Battery and/or Charger, freight prepaid, to one of Makita's Factory or Authorized Service Centers.

If inspection shows the trouble is caused by defective workmanship or material, Makita will repair (or at our option, replace) without charge. This warranty does not apply to Makita Accessories, like flashlights.

This Warranty does not apply where:

  • Repairs have been made or attempted by others
  • Repairs are required because of normal wear and tear
  • The tool has been abused, misused or improperly maintained
  • Alterations have been made to the tool

  • In no event shall Makita be liable for any indirect, incidental or consequential damages from the sale or use of the product. This disclaimer applies to both during and after the term of this warranty. Makita disclaims liability for any implied warranties, including implied warranties of "merchantability" and "fitness" for a specific purpose, after the three-year term of this warranty. This warranty gives you specific legal rights, and you many also have other rights which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.