Battery Makita 18V 5.0 Ah Lithium-Ion LXT BL1850B

Contents of the Makita 18V LXT Battery

This product offers you a high-capacity battery for immediate and optimal use of your Makita 18V LXT professional cordless tools.

Makita 18V LXT 5.0 Ah Lithium-Ion Battery- High capacity battery designed to offer extended runtime superior to standard batteries, equipped with a 4-level LED indicator to monitor charge status and an intelligent electronic protection system against overload, overheating and over-discharge, with a robust construction resistant to demanding job site conditions.

Advantages of the Makita 18V LXT 5.0 Ah Battery

Superior Battery LifeThe 5.0 Ah capacity offers approximately 67% more runtime compared to standard Makita 3.0 Ah batteries, allowing you to complete significantly more tasks per charge. This extended runtime reduces interruptions for recharging and maximizes your daily productivity, which is especially beneficial for extended work at height, in remote areas, or for projects requiring continuous use of high-power tools.

Constant Power Without DegradationUnlike lower-quality batteries that gradually lose power, this Makita battery maintains consistent performance until fully discharged. Your 18V LXT tools retain their maximum speed and torque from the beginning to the end of each charge, ensuring consistent work quality even when the battery is depleted.

Universal Compatibility LXT PlatformThis 5.0 Ah battery works with all Makita tools in the 18V LXT range, including over 300 different cordless tools. This universal compatibility allows you to invest in a high-capacity battery that will power all your current and future Makita 18V tools, maximizing your return on investment.

Professional Protection and DurabilityThe intelligent electronic management system constantly monitors temperature, voltage, and current to protect against overload, overheating, and over-discharge, maximizing lifespan. The robust construction with a reinforced housing withstands frequent shocks, drops, and vibrations in harsh construction environments.

Recommended Additional Accessories

Makita 18V Rapid Charger- Smart charger that can recharge your 5.0 Ah battery in 45 to 60 minutes, with LED indicators to monitor the charging status and a cooling system to extend battery life.

Makita 18V 3.0 Ah Battery- Compact, lightweight battery perfect for less demanding Makita tools or as a backup battery, offering an optimal balance between weight and battery life for light everyday applications.

Makita 18V Double Charging Station- Charging stand that can accommodate 2 18V batteries simultaneously, optimizing the organization of your workshop and ensuring that your batteries are ready for use.

Makita 18V LXT Drill/Driver- Compact and powerful tool making full use of the 5.0 Ah capacity of this battery, offering high torque and extended runtime for all your drilling and screwdriving projects.

Makita 18V LXT Circular Saw- Powerful saw requiring the autonomy of the 5.0 Ah battery for repetitive cuts in structural timber, plywood and building materials without interruption.

First Use

1. Initial Inspection- Unpack your Makita 18V LXT battery and visually inspect it to ensure no damage has occurred during shipping. Check that the 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 60 minutes with a compatible Makita 18V charger. This initial charge optimizes the capacity and lifespan of your high-capacity lithium-ion battery.
3. Functionality Test- Insert the battery into a compatible 18V LXT tool until you hear the locking click. Press the LED indicator button to check the charge level and confirm that all four lights illuminate, indicating a full charge.
4. Familiarization with the Indicator- Learn to read the 4-level LED indicator: four lights on indicate full charge (75-100%), three lights represent 50-75%, two lights signal 25-50%, one light indicates 0-25% and the need for further recharging.

Regular Maintenance

Monthly Checks

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

Load Management

• Recharge the battery before it is completely discharged to optimize its lifespan.
• Use only certified 18V compatible Makita chargers
• 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 battery life, which could indicate normal wear and tear.
• Monitor the battery temperature during intensive use
• Immediately replace any battery that shows signs of swelling, leakage, or abnormal behavior.

Cleaning and Maintenance

Clean the outside ofthe Makita batteryClean with a slightly damp cloth, being careful to avoid getting water inside the electrical connectors or the charging indicator. Never use solvents, gasoline, or harsh chemicals that could damage the plastic casing.

For electrical contacts, use a pencil eraser or a dry cloth to gently remove any oxidation or buildup of metallic residue. Ensure the contacts are completely dry before inserting the battery into a tool or charger to prevent short circuits.

Regularly inspect the ventilation openings and use low-pressure compressed air to remove any accumulated wood, metal, or concrete dust. Never attempt to open the battery case, as this will void the warranty and pose a safety hazard.

Precautions for Use

Never expose the Makita 18V LXT battery to extreme temperatures above 50°C or below -20°C, as this could damage the lithium-ion cells and significantly reduce its performance and lifespan. In particular, avoid leaving the battery in closed vehicles during the Quebec summer.

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

Never use a battery that shows signs of physical damage, cracks, swelling, or leakage. If you notice any of these problems, stop use immediately and contact Polar Industrial Equipment for advice on safe disposal and replacement.

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.

Storage Tips

Store your Makita 18V LXT battery in a cool, dry place, ideally at an ambient temperature between 15°C and 25°C, away from direct sunlight and excessive humidity which could cause corrosion on the electrical contacts.

For extended storage of more than one month, keep 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 maximum capacity.

Use the original packaging or a protective case to avoid accidental contact of the electrical terminals with metallic objects such as keys, coins or tools that could cause a dangerous 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.

Polar equipment offersa 30-day money-back guaranteeregarding 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 18V LXT 5.0 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 lithium-ion cells and the electronic protection system
• Problems with abnormal performance or premature loss of capacity unrelated to wear
• Malfunctions of the overload, overheating and over-discharge protection system
• 4-level LED indicator failures
• Defects in the casing and 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-Makita certified 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 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.