Makita BL1840B 18V 4.0Ah Li-Ion LXT Battery Product Code: 1032K

Li-ion battery fitted with a 4-stage LED charge indicator, providing an indication of remaining charge without needing to be connected to a machine. Allows digital communication between battery and charger. Heavy duty shock-absorbing casing with firm-holding slide-on connection. Equipped with a protection circuit preventing over-discharge, high temperatures and overload of circuit. Can be part-charged with no loss of power through memory effect. Compatible with Makita 18V LXT units with a star imprinted in the base of the machine, or a yellow base plate.


  • 4-Stage LED Charge Indicator
  • Low Self-Discharge
  • No Memory Effect
  • Slide Connection


4.0Ah. 18V.
Additional Information
Technical Specification
  • Brand : Makita
  • Product Type : Battery
  • Model No : BL1840B
  • Pack Size : 1
  • Battery Chemistry : Li-Ion
  • Battery Technology : LXT
  • Battery Power : 4.0 Ah
  • Power Voltage Supply : 18 V
  • Carry Case/Bag Included : No
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

Click here to see information on our delivery service



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€86.95 Incl. 23% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Makita BL1840B 18V 4.0Ah Li-Ion LXT Battery is rated 4.8 out of 5 by 23.
Rated 2 out of 5 by from Doesn't fit older tools I have a mixture of Makita tools of different ages. They are all part of the LXT range but this battery won't fit half of them. Particularly infuriating is that it won't fit my circular saw or drill - the two things I use the most. I have (since) read elsewhere that it is to do with a small notch on the batteries purposely preventing them from being used in older tools. This important information should be highlighted by Screwfix and I feel let down by them.
Date published: 2019-05-09
Rated 5 out of 5 by from Big step up from 3amp Batteries give added power to the 3.0amp, if you don’t want to spend the extra for 5.0amp it’s well worth stocking up on these and I would recommend a double charger.
Date published: 2019-04-22
Rated 5 out of 5 by from Perfect battery I bought this as a present for my son and he is really happy with it as he now has a spare for when the other one runs out
Date published: 2018-12-26
Rated 5 out of 5 by from Job Done No fuss, no mess, I needed a battery for the job and 30 seconds later I had one.
Date published: 2018-07-04
Rated 5 out of 5 by from Makita 4ah Battery A genuine Makita battery is worth its weight in gold, I've never messed around with no name brands because I've never had any problems with the real deal, they just last and last! Still got a couple from when they first started making this style, no faults or flaws, just a little beaten up on the outside! The Battery indicator is really useful too, means less wasted trips to go get another one out!
Date published: 2018-07-01
Rated 5 out of 5 by from Makita Battery Have had Makita tools most of my life using 3.0AH batteries.Well impressed with the 4.0AH and like the power indictor. Would highly recommend as reliable.
Date published: 2017-11-16
Rated 4 out of 5 by from Makita battery 4ah 18v Decent battery. Good life. Expensive without a tool!
Date published: 2017-10-10
Rated 5 out of 5 by from Makita battery Always had Makita tools and the batteries are great .Ive used other brands like Dewalt and Bosch and Milwaukee that work mates have had and too me Makita lead all the way .Even some of the mates have had to say that they had wished they had Makita. dont get me wrong other brands are good but for me Makita is the best
Date published: 2017-08-14
  • y_2019, m_5, d_23, h_1
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.12
  • cp_1, bvpage1
  • co_hasreviews, tv_2, tr_21
  • loc_en_IE, sid_1032K, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie