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  • Makita BL1830-2 18-Volt 3.0 AH Battery, 2-Pack
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Makita BL1830-2 18-Volt 3.0 AH Battery, 2-Pack

by Makita
| 19 answered questions

List Price: $300.00
Price: $168.99 & FREE Shipping. Details
You Save: $131.01 (44%)
In Stock.
Ships from and sold by Gift-wrap available.
2 Pack
  • Charging at any time will have no effect on the battery
  • More power, less weight, and a better fit
  • Sixteen firm holding contact terminals reduce the risk of power loss/fluctuation
  • Built-in shock-absorber and memory chip
  • One-year limited warranty
See more product details
4 new 6 used from $133.00 3 refurbished from $119.95
Special Shipping Information: Due to federal and international regulations, this product can only be shipped within the 50 states.

Frequently Bought Together

Makita BL1830-2 18-Volt 3.0 AH Battery, 2-Pack + Makita DC18RC 18V Lithium-Ion Rapid Optimum Charger
Price for both: $223.98

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Special Offers and Product Promotions

Style: 2 Pack
  • Warranty Offer: Select Makita power tools shipped from and sold by are covered by a one-year manufacturer's limited warranty. Please see the full Makita warranty for more details.

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Product Information

Style Name: 2 Pack
Technical Details
Part Number BL18302
Item Weight1.3 pounds
Product Dimensions6.5 x 3 x 9.8 inches
OriginMade in USA or Imported
Item model numberBL1830-2
Batteries:2 Lithium ion batteries required.
Sizefull size
Style2 Pack
Item Package Quantity1
Battery Cell TypeLithium Ion
Warranty DescriptionYes
Additional Information
Best Sellers Rank #613 in Home Improvement (See top 100)
Shipping Weight4 pounds (View shipping rates and policies)
ShippingCurrently, item can be shipped only within the U.S.
Date First AvailableJuly 2, 2004

Product Description

Style: 2 Pack

The Makita LXT 18-Volt 3-Ah Lithium-Ion Battery boasts more power, less weight, and a better fit. The optimum charging system produces 280 percent the total lifetime of standard batteries, with twice the number of cycles. With a five times lower self-discharge, this lithium-ion battery is ready for use, even after long periods of storage. Built-in features include shock-absorbing to protect the battery and a memory chip that communicates with the charger to maximize battery life using three active controls: current, voltage and thermal. Sixteen firm holding contact terminals reduce the risk of power loss/fluctuation in high-vibration work environments. This battery comes with a 1-year limited warranty.

Important Information

Bulb Voltage

Customer Questions & Answers

Customer Reviews

So they each lasted about one year each.
Makita products are some of the best tools you can buy.
Mark S. Pomerinke
This battery lasts a long time and charges fast.
Michael Stewart

Most Helpful Customer Reviews

222 of 238 people found the following review helpful By Opti Mystic on October 21, 2011
Style Name: 2 Pack
I love these batteries and the tools they power. They deliver more energy than my other brand 18 volt tools. The Makita smart charger charges them in 20 minutes. Wow, great battery! I should be happy, right? Partly I am, but partly I'm not. I am concerned about the huge number of premature failures people are reporting here and in the single BL1830 battery reviews. There's a problem and Makita is ignoring it.

I did a lot of research on the net about this. My conclusion: this battery has design flaw that shuts down these batteries prematurely. It won't happen to everyone, but if the battery sits discharged for a long time, it's very likely to happen.

Background: Lithium batteries can burn or explode if abused. They need monitoring, for safety reasons. So like everyone, Makita put in a smart control board in the battery pack. The control board monitors charging voltage, current, battery temperature, number of charges, and remembers all that. Sounds good, right? But.. there is a design bug. The battery control board draws power only from the first cell of the 5 cells in the battery. If you leave it sitting for a while, the control board will discharge that first cell to zero, while the others remain charged. To the control board or possibly the charger, that looks like a shorted cell, which could overheat, and the control board remembers it. If you try to charge it 3 times with an apparently deep discharged cell, sudden death! The control board tells the charger that the battery is unsafe to charge, and prevents charging in the Makita charger -- permanently.

The key evidence is the apparent dead cell is usually that first cell, the one that powers the control board. Very likely the battery is still usable.
Read more ›
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64 of 65 people found the following review helpful By md on December 12, 2012
Style Name: 1 Pack
Cross-posting from the two-pack SKU... with an update as of 12/12/12.

My two battery packs, although 3 years old, have probably been charged less than 75 times and that's probably an overestimation. I'm just a homeowner and they sit in the basement, sometimes on the charger, sometimes not.

They have just both failed in the span of a month and the charger refuses to try to charge them.

Makita Service center says that there is no systemic issue with the battery pack design and all of us complainers have either abused them or simply worn them out.

I just purchased two more packs before I read of these issues, but will never purchase again.

UPDATE 12/3/12
I put both old battery packs on a laboratory power supply set to constant current with a maximum voltage of 17.5v. I started charging the battery packs at ~50ma and gradually turned it up to 400ma. A couple hours later the power supply stopped pumping current when the battery pack voltage reached 17.5v.
Removed the batteries from the power supply and let them sit for a bit - open circuit voltage stayed above 17v.
Tried the battery packs on the Makita charger again - Still locked out as before, refuses to recognize as a good battery pack.
Used the battery packs all afternoon in the basement - there is nothing wrong with the cells. This is a Makita design issue as other users have pointed out.

UPDATE 12/12/12
Continuing to use the "bad" battery packs after manually charging them via a laboratory power supply. They work (almost)as new. They still will not charge in the Makita charger - registers as a bad cell. Open circuit voltage is still 17.x volts, obviously not a bad cell, but bad design flaw in the electronics.
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108 of 114 people found the following review helpful By Eric O. on September 21, 2010
Style Name: 1 Pack
I have owned a set of Makita tools with the LXT batteries for a couple years now and I have noticed absolutely zero power loss or any other problems. I use them quite regularly whether building concrete forms, decks, remodels, etc. I can think of three things that may be happening to the batteries of those who have commented on bad performance or longevity; (1) Occasionally, batteries can be bad from the factory (I have yet to own a milwaukee tool with the new "V" or "M" series battery that holds up past a few months. I have both V28 and M12, and have had ALL packs replaced) (2) It is possible to have a bad charger which is damaging the batteries itself, or (3) Perhaps the users are taking them all the way to the point of stalling and complete discharge, and for that the batteries are truly not made to do. It is best that once you notice the battery pack is wearing down, to grab a fresh one and put the discharged on the charger to cool down and refresh. Also, if the batteries are being stored for most of their life, it is best to keep the charger plugged in and rotate batteries through it to keep everything active and refreshed. Lithium batteries have computer chips and sophisticated circuitry, allowing them to constantly be charged without damage. Ni-Cad on the other hand are not supposed to be charged over and over again because they typically have memory effects and lifetime charging limits. It is best to mostly, not completely, discharge a Ni-Cad before replacing back onto the charger. Because a consumer only has ultimate control of this last variable, it is a good idea to read the owners manual and find out what the manufacturer thinks is best operating practices.Read more ›
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