Makita Battery 40V Max 4.0 Ah Lithium-Ion BL4040

Contents of the Makita 40V Max Battery

This product offers you a high-power battery for immediate and optimal use of your Makita 40V Max professional cordless tools.

Makita 40V Max 4.0 Ah Lithium-Ion Battery- High-power battery designed to deliver the maximum voltage required by the most demanding tools, equipped with an LED indicator to monitor the state of charge and an intelligent electronic protection system against overload, overheating and over-discharge, with a robust construction resistant to intensive construction site conditions.

Advantages of the Makita 40V Max 4.0 Ah Battery

Maximum Power 40V- The high voltage of 40V Max delivers the power needed to run even the most demanding tools, such as circular saws, angle grinders, and high-performance blowers. This superior power ensures maximum cutting speeds, consistently high torque, and sustained performance even under heavy load, eliminating the frequent slowdowns that occur with lower-voltage batteries that cannot provide the required power.

Balanced AutonomyThe 4.0 Ah capacity offers an excellent compromise between extended runtime and a reasonable weight of 950g, allowing for efficient work without excessive fatigue. This capacity provides enough power to complete most daily tasks without recharging: approximately 200 cuts in 2x4 lumber with a circular saw, or 30 to 45 minutes of continuous high-power blowing, ensuring maximum productivity.

Platform Compatibility: 40V MaxThis battery works with all Makita tools in the 40V Max range, including power tools and landscaping equipment. This universal compatibility allows you to invest in a battery platform that will power all your current and future 40V tools, simplifying your equipment management and maximizing your return on investment.

Robust Professional Construction- The reinforced casing withstands the shocks, drops, and frequent vibrations of demanding construction and landscaping environments. The electronic protection system preserves the lithium-ion cells even during repeated intensive use in Quebec's extreme temperatures, ensuring absolute reliability and extended lifespan for daily professional use.

Recommended Additional Accessories

Makita 40V Max Fast Charger- Smart charger that can recharge your 4.0 Ah battery in 60 to 75 minutes, with LED indicators to monitor the charging status and a cooling system to extend battery life.

Makita 40V Max 2.5 Ah battery- Compact lightweight battery perfect for less demanding 40V tools or as a backup battery, offering an optimal balance between low weight and sufficient battery life for light applications.

Makita 40V Max Circular Saw- High-power saw making full use of 40V voltage for powerful cuts in structural timber, plywood and thick building materials without slowing down.

Makita 40V Max Angle Grinder- High-performance grinder requiring 40V power for intensive grinding and metal cutting work, offering performance equivalent to professional corded grinders.

Makita 40V Max Blower- Ultra-powerful blower fully utilizing 40V 4.0 Ah energy for efficient, prolonged cleaning of large areas with maximum air speed.

First Use

1. Initial Inspection- Unpack your Makita 40V Max battery and visually inspect it to ensure no damage has occurred during shipping. Check that the high-power electrical contacts are clean and free of dust or debris that could affect the connection with your tools.
2. Initial Full Charge- Before first use, fully charge the battery for approximately 75 minutes with a compatible Makita 40V Max charger. This initial charge optimizes the capacity and lifespan of your high-power lithium-ion battery.
3. Functionality Test- Insert the battery into a compatible 40V Max tool until you hear a locking click. Check the LED indicator to confirm a full charge and briefly test the tool to ensure proper operation and maximum power output at the characteristic 40V voltage.
4. Familiarization with VoltageNote the superior power delivered by this 40V battery compared to 18V batteries, particularly noticeable with high-power tools. Adjust your work technique as needed to accommodate this increased performance and optimize safety and efficiency.

Regular Maintenance

Monthly Checks

• Inspect the high-power electrical contacts and clean them gently with a dry cloth if necessary.
• Check the overall condition of the robust casing for cracks or damage.
• Test the LED indicator to ensure it is working correctly.
• Make sure the ventilation openings are not blocked by debris

High Power Load Management

• Recharge the battery before it is completely discharged to optimize its lifespan.
• Use only certified Makita chargers compatible with 40V Max high power
• Avoid leaving the battery completely discharged for extended periods.
• Never recharge a battery showing signs of physical damage

Performance Monitoring

• Note any significant decrease in power or battery life
• Monitor the battery temperature during intensive use with high-power tools
• Immediately replace any battery that shows signs of swelling, leakage, or abnormal behavior.

Cleaning and Maintenance

Clean the exterior of the Makita 40V Max battery with a slightly damp cloth after use on dusty job sites, taking care to avoid getting water into the high-power electrical connectors. Never use solvents, gasoline, or harsh chemicals that could damage the robust plastic casing.

For high-power electrical contacts, use a pencil eraser or a dry cloth to gently remove any oxidation or residue buildup. Ensure the contacts are completely dry before inserting the battery into a tool or charger to prevent short circuits that could damage 40V high-power systems.

Regularly inspect the ventilation openings and use low-pressure compressed air to remove any accumulated dust, sawdust, or plant debris. Never attempt to open the 40V battery case, as this will void the warranty and present significant safety risks due to the high voltage.

Precautions for Use

Never expose the Makita 40V Max battery to extreme temperatures above 50°C or below -20°C, as this could damage the high-power lithium-ion cells and significantly reduce its performance. In particular, avoid leaving the battery in closed vehicles during the Quebec summer.

Avoid violent shocks, drops, and impacts that could damage the internal structure or the high-power electronic protection system. Although the casing is robust, always handle the battery with care and store it in a secure, weatherproof location.

Never use a battery that shows signs of physical damage, cracks, swelling, or leakage. Due to the high voltage of 40V, a damaged battery presents increased risks. If you notice any of these problems, stop use immediately and contact Polar Industrial Equipment for advice on safe disposal.

Keep the battery away from flammable materials and never charge it near heat sources or in confined spaces without adequate ventilation. Never immerse the battery in water or any other liquid, even if it is designed for outdoor use.

Storage Tips

Store your Makita 40V Max battery in a cool, dry place, ideally at room temperature between 15°C and 25°C, away from direct sunlight and excessive humidity. This is especially important for high-power 40V batteries, whose lifespan can be affected by improper storage conditions.

For extended storage of more than one month, maintain the battery at a charge level of approximately 40 to 60% rather than fully charged or completely discharged. Storing the battery fully charged or completely discharged can reduce its overall lifespan and its maximum capacity of 4.0 Ah.

Use the original packaging or a protective case to prevent accidental contact between the electrical terminals and metal objects such as keys, coins, or tools, which could cause a dangerous short circuit. High-power 40V batteries can deliver a very high current in the event of a short circuit.

Check and recharge the battery at least every 3 months, even if it is not in use, as lithium-ion batteries undergo a natural self-discharge of approximately 1 to 2% per month. This practice maintains its electrochemical health and ensures it is ready for immediate use at its maximum power of 40V.

Polar Industrial Equipment offers a 30-day money-back guarantee on this product. If you are not completely satisfied, you can return the battery in its original packaging and in new condition for a full refund.

Makita Warranty Cover

Makita offers a 3-year limited warranty on this 40V Max 4.0 Ah lithium-ion battery, covering defects in workmanship and materials from the original purchase date. This warranty applies only to batteries used according to the manufacturer's instructions and under normal professional use conditions.

What Is Covered

• Manufacturing defects in high-power lithium-ion cells and the electronic system
• Problems with abnormal performance or premature loss of capacity unrelated to wear
• Malfunctions of the overload, overheating and over-discharge protection system
• Charging LED indicator failures
• Defects in the robust casing and high-power electrical connectors

Warranty Exclusions

❌ Normal wear and tear resulting from regular and prolonged use over several years

❌ Damage caused by falls, impacts, crushing or improper handling on site

❌ Damage resulting from exposure to water, excessive humidity, or extreme temperatures

❌ Damage due to the use of incompatible or non-certified Makita 40V chargers

❌ Damage caused by attempted repair, modification, or unauthorized opening of the case

❌ Batteries used for commercial rental purposes or in extreme industrial environments

Complaint Procedure

1. Contact Polar Industrial Equipment- For any problem occurring within the first 30 days, first contact our customer service who will assess the situation and guide you towards the appropriate solution, whether it is an immediate exchange or a refund.
2. Gather the necessary documents- Prepare your original proof of purchase, the serial number of the defective battery (written on the casing), and a detailed description of the problem encountered with photos if possible to speed up processing.
3. Problem Assessment- Our technical team will analyze your claim to determine if the problem is covered by the Polar Industrial Equipment warranty or if it falls under the Makita 3-year manufacturer's warranty.
4. Return or Replacement- Depending on the assessment, we will either proceed with an immediate exchange from our local Quebec stock, or direct you to the Makita warranty service with all the necessary assistance to facilitate the process and minimize your downtime.
5. Monitoring and Resolution- We will ensure full follow-up of your claim until its satisfactory resolution, whether by replacement, repair or refund according to the applicable terms, with regular communication on the progress.

Contact Polar Industrial Equipment:

• Telephone: 1-800-567-3206
• E-mail :info@equipementpolar.com
• Address: 3425 Wilfrid-Hamel Boulevard, Quebec
• Hours: Monday-Friday 8am-5pm

Contact Makita:For manufacturer warranty claims after 30 days, visitmakita.caor contact their customer service.