MAKITA 18V 4AH BL1840 BATTERY

Contents of the Makita BL1840 Battery

This offer includes a genuine professional-grade Makita battery designed to deliver exceptional performance and durability on all your job sites.

Included in your order:

1x Makita BL1840 18V 4.0Ah Lithium-Ion Battery

High-performance rechargeable lithium-ion battery with premium Japanese cells. The integrated four-level LED indicator lets you instantly check the remaining charge level. Rugged construction with a shock-resistant overmolded base to withstand the harsh conditions of professional job sites and protect your investment for the long term.

Advantages of the Makita BL1840 Battery

A smart investment for professionals and DIY enthusiasts:

This genuine Makita battery represents the perfect balance between runtime, weight, and price in the LXT range. With a 4Ah capacity, you get 33% more runtime than a 3Ah battery while maintaining the same weight of 640g, ideal for extended work without excessive fatigue.

Universal LXT compatibility guaranteed:

Use this battery with your entire existing Makita 18V tool collection. Compatible with over 350 tools in the LXT platform, including drills, impact drivers, saws, grinders, garden tools, and much more. One battery system for all your needs, maximizing your return on investment and simplifying equipment management.

Maximum productivity with ultra-fast charging:

A charging time of just 36 minutes with a DC18RC fast charger means less waiting time and more productive work time. Keep one battery charging while you use the other for efficient rotation without interrupting your projects.

Advanced protection for increased longevity:

The Star Protection system intelligently communicates between the battery, tool, and charger to protect against overload, over-discharge, and overheating. This exclusive Makita technology significantly extends your battery's lifespan, ensuring excellent value for money over many years of heavy use.

Recommended Additional Accessories

Optimize your investment with these essential accessories:

• Makita DC18RC Rapid Charger- Full charge in 36 minutes, compact and portable for construction sites
• Makita DC18RD Dual Charger- Charge two batteries simultaneously, ideal for professionals
• Makita BL1830B 3Ah battery- Lightweight option for compact tools and precision work
• Makita DDF484 18V Drill/Driver- Powerful 54Nm torque, perfect with a 4Ah battery (sold separately)
• Makita DTD154 18V Impact Driver- Compact and powerful for quick assembly (sold separately)

First Use

Optimal activation of your new Makita BL1840 battery:

1. Full initial charge: Place your new battery on the compatible Makita charger and allow it to charge fully until the charger indicator light shows that charging is complete. This initial full charge optimizes the lithium-ion cells and establishes the electronic calibration for maximum performance right from the start.
2. Indicator check: Press the LED indicator button to confirm that all four bars are illuminated, indicating a 100% charge. This check ensures the proper functioning of the integrated indicator, which will remain active throughout the battery's lifespan.
3. Installing the battery on the tool: Firmly insert the battery into your Makita 18V LXT tool by sliding it in until you hear an audible click. Ensure the battery is securely engaged and does not move before starting work to guarantee optimal electrical contact.
4. Performance test: Perform a few light operations with your tool to verify proper functioning and familiarize yourself with the runtime offered by the 4Ah capacity. Mentally note the usage time to better plan your future projects and battery rotations.

Regular Maintenance

To maximize the lifespan of your Makita BL1840 battery:

After each intensive use:

• Allow the battery to cool for 15-20 minutes before recharging to protect the lithium-ion cells.
• Wipe the contacts with a dry cloth to maintain an optimal electrical connection
• Remove the battery from the tool if it will not be used for more than 24 hours to prevent residual discharge.

Optimal load management:

• Recharge as soon as the LED indicator shows 1-2 bars remaining; avoid repeated full discharges.
• Use only genuine Makita chargers to preserve warranty and performance.
• Do not leave the battery on the charger for more than 24 hours after a full charge.

Rotation and inspection recommended:

• If you have several batteries, alternate their use to ensure even aging.
• Visually inspect the contacts monthly for oxidation or damage
• Check the case for dents, cracks, or deformation that would indicate a significant impact.

Precautions for Use

For your safety and the safety of your equipment:

Avoid shocks and drops: Violent impacts can damage the internal cells and compromise battery safety. Always handle with care and use stable supports on worksites to minimize the risk of drops.

Do not expose to excessive moisture: Although splash-resistant, the battery is not waterproof. Avoid immersion in water and storage in very humid environments, which could cause corrosion of the electrical contacts.

Observe operating temperatures: Do not use the battery at temperatures below -20°C or above +50°C. Extreme temperatures reduce performance and can permanently damage the lithium-ion cells.

Never disassemble or modify: Disassembly immediately voids the warranty and presents serious risks of fire or explosion. In case of any problem, contact an authorized Makita service center for professional inspection and repair.

Watch for signs of abnormal wear: Stop use immediately if you notice excessive overheating, unusual odors, swelling of the casing, or a sudden loss of performance. These symptoms may indicate an internal problem requiring battery replacement.

Storage Tips

Optimal storage to preserve performance:

Short-term storage (less than 2 weeks):

• Store at room temperature between 15°C and 25°C in a dry place
• Ideal charge level: 40-80% (2-3 bars on the LED indicator)
• Protect from direct sunlight and heat sources
• Store in a clean place away from dust and metal debris

Long-term storage (more than 2 weeks):

• Charge to approximately 40-60% before prolonged storage (2 LED bars)
• Ideal temperature: 10°C to 20°C to minimize self-discharge
• Recharge every 3 months to maintain cell health
• Store in the original packaging or a clean, dry container

Winter storage in Quebec:

• Never leave batteries in an unheated vehicle or garage during winter.
• Bring them into a heated space between 10°C and 25°C
• Before using in cold weather, allow the battery to acclimatize for 30 minutes at room temperature.
• Performance is reduced below -5°C but the battery functions down to -20°C

Expected lifespan with proper storage: 800 to 1000 complete charge cycles, or 3 to 5 years of intensive professional use with appropriate maintenance practices.

Makita Warranty Cover

Warranty period:

• 2-year limited manufacturer's warranty on Makita lithium-ion batteries
• 3-year warranty if you register your product within 30 days of purchase on makita.ca
• Warranty type: Limited manufacturer's warranty against manufacturing and material defects
• Starting point: Original purchase date with proof of purchase required
• Additional guarantee: Makita satisfaction program allowing returns under certain conditions

What Is Covered

The Makita and Polar Industrial Equipment limited warranty covers:

Manufacturing Defects: Any manufacturing defect affecting the normal operation of the battery, including lithium-ion cell failures, internal electronic circuit problems, or LED indicator malfunction. The battery will be repaired or replaced free of charge if the defect is confirmed by an authorized technician.

Material defects: Problems related to defective components or materials used in the construction of the battery, including prematurely cracked casing, defective original electrical contacts or faulty locking system not caused by improper use.

Abnormal performance: Significant loss of capacity or inability to maintain a charge under normal professional use conditions, if the battery does not meet documented Makita performance standards and proper maintenance has been followed.

What Makita and Polar Industrial Equipment will do:

• Professional battery repair at an authorized Makita service center
• Replacement with a new or refurbished battery of equivalent or greater capacity
• Pro-rata refund if repair and replacement are impossible (according to policy)

Warranty Exclusions

The guarantee does NOT cover the following situations:

Normal wear and tear: Gradual loss of capacity over time and with repeated charging cycles, cosmetic scratches, discoloration of the casing, or natural wear of electrical contacts after prolonged use. Lithium-ion batteries naturally lose 10-20% of their capacity after 500-800 cycles.

Physical damage: Cracks, dents, deformations caused by falls, impacts or crushing. Damage caused by immersion in water, exposure to corrosive chemicals or contact with metal debris.

Misuse: Use with non-Makita chargers, unauthorized modification or repair attempts, disassembly of the housing. Use with incompatible tools or exceeding recommended temperature specifications.

Extreme conditions: Damage caused by prolonged storage at extreme temperatures below -20°C or above +45°C, prolonged exposure to weathering without protection, or use in excessively dusty environments without precautions.

Neglect of maintenance: Damage resulting from repeated complete discharge, storage at full load for more than 6 months without use or lack of regular maintenance of electrical contacts causing excessive corrosion.

Complaint Procedure

How to file a claim in 4 simple steps:

Step 1: Documentation and preparation

Keep safe:

• Original purchase invoice for Polar Industrial Equipment
• Battery serial number (engraved on the casing)
• Photos of the damage or a detailed description of the problem
• Usage and maintenance history, if available

Step 2: Initial contact according to the period

Polar Industrial Equipment Customer Service (30-day returns):

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

Makita Canada Service (2-3 year manufacturer's warranty):

Visit makita.ca to locate the nearest authorized service center or contact Makita Canada Customer Service for assistance and return instructions.

Step 3: Assessment and diagnosis

For Polar Industrial Equipment returns: Our team will assess your request within 24-48 business hours and determine if a return, exchange, or repair is appropriate according to the 30-day satisfaction policy.

For Makita warranty claims: A certified Makita technician inspects the battery to confirm the defect covered by the warranty and determines whether repair or replacement is necessary according to the manufacturer's criteria.

Step 4: Resolution and follow-up

Polar Industrial Equipment: Immediate exchange or full refund according to your preference within 30 days with valid proof of purchase.

Makita Warranty: Repair completed or replacement shipped within 5-10 business days, depending on parts availability. Replacement battery guaranteed for the remaining duration of the original warranty.

Additional Advantages of Polar Industrial Equipment:

• Free technical support by phone or email for usage questions
• Expert advice on battery compatibility and performance optimization
• Loyalty program offering points redeemable on future purchases