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Makita BL1820B-2 18V Compact Lithium-Ion 2.0Ah Battery Twin Pack

  • Based on 1,546 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Oct 16
Order within 23 hours and 28 minutes
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Size: 2.0Ah


Style: 2-Pack


Features

  • Integrated L.E.D. battery charge level indicator allows user to monitor battery charge
  • Provides up to 50% more run time per charge compared to BL1815
  • Reaches full charge in 25 minutes or less
  • Compatible with 18V LXT Tools
  • Battery delivers consistent power and run time in extreme temperatures, even in winter (-4DegreeF/-20DegreeC)

Description

The Makita 18V Compact Lithium-Ion 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. The Makita 2.0 Ah battery 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. Makita 18V Lithium-Ion batteries resist self- discharge so they're 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 deliver 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. Makita, the innovation leader in cordless tool technology, has the world's largest cordless tool line-up powered by 18V lithium-ion slide-style batteries.

Number of Batteries: 2 Lithium Ion batteries required.


Brand: Makita


Battery Cell Composition: Lithium Ion


Battery Capacity: 2 amp_hours


Recommended Uses For Product: Vacuum Cleaner


Number of Batteries: 2 Lithium Ion batteries required.


Brand: Makita


Model Number: BL1820B-2


Model Name: Lithium battery


Global Trade Identification Number: 81


UPC: 088381463881 784497024564


Manufacturer: Makita


Battery Cell Type: Lithium Ion


Battery Capacity: 2 amp_hours


Voltage: 18 volts


Amperage: 2 A


Compatible Phone Models: MAKITA 18V CORDLESS TOOLS


Unit Count: 2 Count


Battery Weight: 458 g


Item Dimensions: 3 x 6.75 x 9.75 inches


Item Weight: 1.9 pounds


Antenna Location: Vacuum Cleaner


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • real deal batteies
Size: 2.0Ah Style: 2-Pack
i bought these over the generic brands because i wanted a product with no issues. batteries work great and really last - the 2 amp hr are light weight so great for the hand held tools. didn't last so long when used on the dyson vacuum - a little dissapointing
Reviewed in the United States on August 14, 2024 by S. Cross

  • shoulda got one sooner
Size: 2.0Ah Style: 1-Pack
I have many Makita tools but only had 5amp hour and 4 ah batteries. This little guy is great for short jobs, lasts longer than i thought, love it!
Reviewed in the United States on April 15, 2026 by Doc Spook

  • Awesome for Makita Jackets.
Size: 2.0Ah Style: 1-Pack
I bought this to use with my Makita 18v heated jacket. It's a great size that doesn't weigh down the pocket or stick out too much. That high quality you can expect from Makita. Lasts about 4-5 hours in my jacket on high. Don't know about tools cause I use all 40v. Charges in about 10 minutes in my experience, which is always great ... show more
Reviewed in the United States on October 30, 2025 by Lindsey

  • Perfect
Size: 2.0Ah Style: 1-Pack
Exactly what I needed to replace my original Makita drill battery.
Reviewed in the United States on April 20, 2026 by pamela k. iversen

  • 💩🍪
Size: 2.0Ah Style: 1-Pack
China time, be crunchy like water.
Reviewed in the United States on January 4, 2026 by Thomas

  • Reliable
Size: 2.0Ah Style: 1-Pack
Great value and last a while between charges.
Reviewed in the United States on September 13, 2026 by Dave Amazon Customer

  • If you carry your impact in a holster or do overhead work, this is worth it
Size: 2.0Ah Style: 1-Pack
I bought this primary for my impact. I got a tool belt but the 5AH batteries add so much weight it felt like a lead weight hanging off my hip. This battery fixes that problem at the cost of battery life of course. If you're holding a tool overhead a lot this battery also helps with fatigue. Hopefully it lasts, I have had 3 Makita batteries fail, two 5AH and one old 3AH. The 3AH I tried to charge when it was cold and Makita in it's infinite wisdom turns the battery into an expensive brick after it records 3 failed charge attempts. The other two failed to charge randomly, with one of those having the flashing battery charge level LEDs of doom. Makita replaced the 5AH ones under warranty. The first one turned around in a few days from the repair center, the second one took over a month. I think Makita has consolidated it's repair centers on the West coast and now it's taking much, much longer for service as the remaining repair centers are overloaded. If you're a pro who needs fast repair service beware. ... show more
Reviewed in the United States on December 18, 2023 by MB

  • Good price
Size: 2.0Ah Style: 2-Pack
Worked perfectly
Reviewed in the United States on August 14, 2026 by Amazon Customermeomy

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