Medium ProductMore Information
Unbeatable 36 minute charge time.
Up to 33% extra runtime and extended battery life.
Same size and weight as 3.0Ah BL1830.
Works with your current Li-ion chargers.
Computer controlled optimum charging.
Compatible with starred terminal machines.
Compatible with yellow terminal machines.
Cooling System for max battery life.
Battery protection circuit.
LXT Lithium-Ion battery and optimum charging system produces 280 percent total lifetime work with 2x more cycles. 5x Lower self-discharge keeps battery cells active and ready for use, even after long periods of storage.
Charging at any time will have no effect on the battery. Built-in shock absorbing features protect the battery. Sixteen firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environments.
Battery's built-in Memory Chip communicates with the charger to maximize battery life using 3 Active Controls (Current, Voltage & Thermal). Battery suitable for all Makita li-ion LXT 18 volt machines.
Star Protected Makita Battery
The demanding applications you take on every day are also demanding on your cordless tools and batteries. You rely on your tools, so Makita created STAR Protection Computer Controls™. STAR Protection is communication technology that allows the tool and battery to monitor conditions and exchange data in real time to protect against Overloading, Over-Discharging and Over-heating. Look for Makita tools and batteries with the STAR and get these protection features.
Makita Star Battery - Overload Protection
High-drain applications require maximum battery power. Makita tools and batteries are engineered for industrial applications, but sustained peak demand can overload the tool. Makita’s STAR Protection Computer Controls™ allow the battery and tool to communicate and protect your tool and battery from overload by cutting power when put under abnormally high current draw.
Makita Star Battery - Overcharge Discharge Protection
Lithium-ion batteries are engineered for longer, sustained performance. But running a battery until it’s “dead” empty can damage the cells. Makita STAR Protection Computer Controls™ monitor battery charge capacity, and if the battery is too low to complete the application it will cut power in order to extend battery life.
Makita Star Battery - Over heat protection
Extreme heat is the enemy of ALL batteries. It can make batteries charge slower, damage battery cells, and reduce battery life. Makita STAR Protection Computer Controls™ monitor battery heat during operation. If the battery reaches a certain level of heat it will cut power to the tool.
Will the Makita 4ah Battery Work With My Makita Tool?
LOOK FOR THE STAR - The 18v 4.0ah battery BL1840 will work with your 18v machine if it has a star on the connector plate, has a yellow connector plate with a star or has a yellow connector plate only.
Why Choose the Makita BL1840 4.0ah Lithium Ion Battery?
36 Minute Charge Time
The Makita 18v 4.0Ah Li-ion batteries charge with existing DC18RA and DC18RC chargers with an unbeatable 36 minute charge time.
Through this two way communication between charger and battery, the charger can recognise the battery and recall its charging history analyse the batteries condition and usage and charge the battery accordingly.
Same Weight More Power
The weight saving means that Makita can have 4.0Ah from a battery weighing the same as the existing BL1830 3.0Ah lithium ion battery.
Not only is it the same weight but also you will have much more power and a longer lasting battery life.
Specification of the Makita BL1840
Type: Li-ion Voltage: 18V
Energy rating: 72Wh
Number of cells: 10
Charging time (DC18RC): 36 minutes
Individual cell monitoring: Yes
Battery protection circuit: Yes
Makita has built a reputation for outstanding Service Care, which supports regular repair and part replacement. Makita will fix and service any Makita Powertool or accessory, even those models that may now be discontinued or obsolete.
Makita 3 Year Warranty
The 3 year warranty applies to tools purchased on or after July 1st 2012. This excludes batteries, chargers, outdoor power equipment, airtools and accessories. These are all supplied with a standard years warranty.
Tools must be registed online on Makita UK Warranty Registration Page within 30 days of purchase to qualify for the warranty extension otherwise a standard 1 year warranty will apply.
Any warranty claims outside of the 1st year but within the second or 3rd must be dealt with directly by Makita.
For Further details on the 3 year warranty plan see Makitas 3 Year Warranty Terms and Conditions.
What if my product becomes faulty?
You will need to contact us on 01502 440 232 and we can provide you with details of Makita's approved repair agent, your local Makita service centre, or we can send it to Makita on your behalf to be tested and repaired or replaced.
Buyaparcel offer delivery throughout the United Kingdom, including Northern Ireland, Scottish Highlands and other Islands of the UK. In addition we can now also deliver through Europe.
UK Delivery Prices
£2.95 - Royal Mail Second Class (2-5 Days Approx - selected products only)
£3.95 - Standard UK Delivery (2-3 Days Approx)
£5.95 - Next Day UK Delivery (Orders placed before 4pm Monday - Friday)
£12.00 - Saturday Delivery (Orders placed before 4pm Friday)
£36.00 - Pallet Delivery (2-3 Days Approx - selected products only)
International Delivery Prices
In addition we now deliver through Europe on a 48 Hour Delivery Service as Standard
Zone 1 – £9.99
Belgium, Germany, Luxembourg, France, Netherlands, Rep Ireland.
Zone 2- £14.99
Austria, Denmark, Czech Republic, Poland, Lithuania, Hungary.
Zone 3 – £19.99
Estonia, Spain, Sweden, Italy, Portugal, Latvia.
Zone 4 – £29.99
Bulgaria, Finland, Romania.
Zone 5 – £49.99
Bosnia, Croatia, Switzerland.
Zone 6 – £59.99
Norway, Serbia, Iceland.
Choose a Delivery Date to Suit You
You also now have the facility to choose a day you wish to have your order delivered on if your order is being delivered via courier or pallet. This can be done at the checkout stage where you will be shown a calendar if you select the book in option. You will have the option of booking in your delivery for a day that is convenient for you. Should you require the order the following day please select the next day option.
Is My Item Available for Next Day Delivery?
If your item is stocked in our immediate picking location it will available for you to choose a next day delivery. This will be highlighted by a green tick and a 1 day dispatch time on the item information.
You will have the option to choose this service if you are purchasing your item for delivery to mainland UK.
What courier will my item be delivered with?
If your item is being delivered in the UK or Ireland, it will be delivered by UK Mail or Royal Mail, with the exception of pallet items. The courier type is displayed on each item but will be confirmed at the checkout stage when you have completed your shopping.
If you are an international customer, your goods will initially be sent via UK Mail, and then exported to either Eurodis or DHL. The appropriate tracking can be provided when necessary.
Details of each courier service we offer are detailed in our Delivery Guide.
How do I track my delivery?
To track your order online, go to 'Your Account' and click on 'Purchase History' for an update on your order.
Our team work extremely hard to get your parcels to your door in the shortest possible time but please note that we recommend you do not book a plumber etc until you have received and checked your goods.
- Delivery addresses cannot be changed once the order is placed except in the case of an error, which we will do our best to change, but orders are often shipped quickly after being processed.
- The couriers we use do not deliver to PO boxes or building sites.
Returns at Buyaparcel
We've simplified our returns process! We now offer a no-questions-asked, free returns service within the first 30 days (subject to T&Cs).
You can find our returns information in our Terms and Help page.