Features:

  • Integrated L.E.D. battery charge level indicator allows user to monitor battery charge
  • Provides up to 65% more run time per charge compared to BL1830
  • Reaches full charge in 45 minutes or less
  • Compatible with 18V LXT Tools
  • Battery delivers consistent power and run time in extreme temperatures, even in winter (-4degreeF/-20degreeC)
Great battery for newer Makita tools

Myself, my adult kids, and a number of employees use Makita battery tools. I have a number of the 3ah batteries that have lasted for many years. The newer 5ah batteries are more powerful. I have a blower that runs faster on the 5ah batteries. My only complain is some of the older tools won't accept the 5ah batteries. If your tool doesn't have the yellow plastic at the battery connection, you can use the 5ah battery.

More power now with these 5.0amh than tools ever had when new. Saws work better & longer than ever before. All comes down ta bat

Only took about a minute per tool ta cut little nub off battery slide groove, 1/8" x 1/8" battery stop. Couple strokes with Leatherman & all my old tools are better than new again. Finally use sawzall & circ saw now with these digital 5.0 beasts. Always wait way to long ta just toss weak batteries.

Great accessory item

I have an arsenal of Makita LXT cordless tools, as well as many chargers. I keep adding additional 5.00 Ah batteries for convenience when using my cordless blower for the driveway and back deck, It always requires that I have an extra battery to complete the job. You cannot beat Makita quality and utility in cordless tools.

Best Makita LXT battery, worth the price.

The 5.0Ah batteries are excellent. Much longer run time than 3.0Ah batteries in tools that drain power, such as the 36 volt (2-18 volt batteries) leaf blower and string trimmer. Rapid recharge. Although a bit more expensive, I'll buy only the 5.0Ah in the future (unless Makita comes up with an even better battery.) Love the Makita LXT system. I have the brushless drill & driver, miter saw, string trimmer, leaf blower, small blower and small vacuum. If Makita made an LXT mower I could be done with gas and oil, and cords for tools.

You can use the BL1850 on older non compatible tools that used the BL1830 battery if...

These batteries will not fit the older tools that have the black battery receiver plate without the star on it unless you file, cut or grind off the wee little tab on the tool receiver plate that keeps the battery from sliding on. I cut it off by hand using a jigsaw blade on 5 of my tools in less than 10 minutes. These older tools used the the BL1830 battery. The older tools had only two contacts instead of three like the newer tools that have the yellow receiver plate with or with out the star or black receiver plate with the star. The extra contact is so the battery and tool can communicate allowing the battery to shut off if the tool is over loaded or the battery is drained past a set point. Running a tool without this communication feature until the battery is dead will shorten battery life. Over loading a tool creates heat that is bad for the tool and battery life. The ideal situation is to use and store the batteries at room temperature as leaving them in your truck with the windows up on a 100 degree day with the windshield facing the sun is not good for them. Heat is bad for the batteries. If you have to lock them up in a situation like this, a cooler bag with an ice pack would help. On the other hand cold temperatures reduce battery capacity and using the battery when it is below 0 Fahrenheit is not ideal for battery life either. There is no memory effect with these batteries so top them off while using them and before storing them is a good idea because storing them in a discharged state is bad for battery life and like I said running the battery until it is dead is also bad. If you are going on an extended vacation have someone charge your batteries at least once every 3 months or risk harming the battery. Do not leave the batteries on the charger for ever. Take them off as soon as you can after they are charged. In the real world you have to get the job done but to the extent that you can follow these rules your batteries will last longer. I have had some BL 1830 batteries last up to 5 years but some didn't make it that long and did I follow my own advise? Not always by any means! So you might wonder why that little tab is on the tool battery receiver plate of some of the tools. It was to keep people from using the little BL1815 batteries on high drain tools. The discharge rate could be too high for the little batteries. I had to tease all this information out of the Makita tech people as there is no way they will advise cutting off the tab on your tool for all the reasons that you could imagine but they had no information as to why it would be a bad idea either which is their way of saying go ahead and do it but we don't want to know about it. All my tools are out of warranty anyway. I have seen several reports of people cutting the tab on their tools and not having any problems with using the BL1850 battery. Just keep in mind that the two electrical connector tools are not talking to the battery like the tools with three connectors so you need to be a little smarter about how you use them if you want to optimize your battery life. Do not drain the battery all the way and do not push the tool especially with a low battery. Some people have said their drills spin faster with this battery or their reciprocating saws have more power than with the BL1830 battery but I think what they are experiencing is as the battery ages and gets near the end of its life the batteries can not provide the same amperage (drain rate) or amp hours (capacity) as when they are new. If you compared the performance of this battery to a new BL1830 in a drill you should see the same rpm and of course a longer run time.You will also see reviews saying the batteries last twice as long or three times as long but again I think these people are comparing well used batteries to new ones. I am going to the charger a lot more often with my older batteries because they do not have the same capacity as when they were new. If you are comparing new batteries you should get 65% more run time as Makita advises. The warranty is now 3 years on the batteries so I imagine Makita has reason to believe the communication feature will improve battery life and that could be one of the reasons why they don't want you to use the battery with tools that do not have the third connector. Enjoy less trips to the charger

Excellent battery!

As the numbers go, 5 amp kicks the stuff out of 3 amp batteries. And they should. I purchased a cheap knock off 5 amp battery from Amazon a while back. My guess is the tool makers put these out to test the waters and watch for problems. My cheap-o didn’t last a year, had an overload device in the board melt down during a quick drain saws-all operation. These do not have that problem, have drained them quickly multiple times but they just come back for more. Good buy. Pay attention to the compatability notes. I have a bunch of Makita 18V Gear, started collecting it in 2013 or so to replace B&D stuff. The only thing it is not compatible with is the older version 4-1/2” angle grinder. Pity, that device is almost useless for anything serious because it kills the 3 amp batteries so quickly. I know you can modify the stuff to make it work but I’ll keep it all original. Maybe I’ll upgrade.

Definitely worth the extra money if the capacity will get you all the way through your task

These new super-batteries aren't cheap, but do deliver value as long as you are using your tool(s) for an extended period of time. I do a lot of work with a Makita 36 volt String Trimmer that is supplied with an adapter that takes two 18 volt batteries. The normal run time with standard Makita batteries is around 35 minutes. That jumped to 70 minutes with these batteries. Of course, if you only had 15 minutes worth of work, the standard batteries would be just as good and for a lot less money. In addition, because these hold twice the energy, they take twice as long to charge, so if you need to go more than, in this case, 70 minutes, you will be waiting a long time before you can resume work.

Don't buy knock offs

I replaced my knock off ones that didnt last more than 18 months. While I may have saved money at the time, I am glad I have these now. The button to the check the charge is real nice. I anticipate these should last 3-5 years based on my usage.

Two Batteries To Power Them All

These factory batteries are very powerful. Got them to run my excellent Makita handsaw.Makita XSH03Z 18V LXT Lithium-Ion Brushless Cordless 6-1/2" Circular Saw, Bare Tool Only. I also bought a new charger for them. Makita DC18RC 18V Lithium-Ion Rapid Optimum Charger in Retail Package thinking my two older Makita DC18RA chargers could not handle the larger batteries. But the older DC18RA charger can charge these batteries, and just as fast. Now I have three chargers. Sigh. These batteries also fit my other 18v Makita tools that came with the smaller 2Ah batteries like the Makita LCT400W 18-Volt Compact Lithium-Ion Cordless 4-Piece Combo Kit and the Makita XWT06Z 18V LXT Lithium-Ion Cordless Square Drive Impact Wrench, 3/8-Inch. As my older 2Ah batteries are now either 5- or 8-years old, and are beginning to show their age, these new batteries are a welcomed addition with only a small weight and size penalty. I use a stable of lightweight, reliable, high-performance Makita tools all the time. Two 1/2" drills, two 1/4" impact drivers, a 3/8" impact wrench and a 6-1/2" circular saw. All great and seeming never to wear out. These 5Ah batteries fit and power them all really well. Yeah, I could have purchased after market batteries for less, but genuine Makita is a one-time fee that will last for ten years at least.

Mind the tab...

These batteries are replacing my original Makita 1830 18V LTX batteries that came with my tools. They fit the original charger and most of the tools (screwdriver, impact driver), but not the cutting tools (sawzall, circular saw). For reasons I havent bothered Googling, the Makita saws have a little square tab on the left side of the battery compartment, maybe for overheating or some other safety issue. Anyway, these batteries don't slide in (grooves on the battery are different). Simple fix, grind off the plastic tab with a Dremmel sander, or be OCD like me and use a small hand file. Works perfectly fine and i havent overheated my saws, yet.

Full Reviews