Makita 40V Max XGT 5.0 Ah Lithium-Ion BL4050F Battery

Contents of the Makita 40V Max XGT Battery

This product offers you the new generation XGT high-performance battery for optimal professional use of your most powerful Makita 40V Max XGT cordless tools.

Makita 40V Max XGT 5.0 Ah Lithium-Ion Battery- Next generation battery designed with revolutionary XGT technology offering superior energy efficiency and 180 Wh of total energy, equipped with an integrated LED indicator for precise monitoring of the state of charge, a sophisticated electronic protection system against overload, overheating and over-discharge, with a reinforced impact-resistant casing that withstands extreme professional conditions and exceptional cold resistance down to -20°C for harsh Quebec winters.

Advantages of the Makita 40V Max XGT 5.0 Ah Battery

Next Generation XGT TechnologyMakita's revolutionary XGT technology represents a major advancement in high-voltage battery energy efficiency, offering up to 50% more runtime compared to previous high-voltage batteries of the same capacity. This superior efficiency means that every watt-hour is used more effectively, allowing significantly more work to be completed per charge while generating less heat, thus extending the overall battery life for intensive daily professional use.

Exceptional Power and Battery LifeThe combination of a high voltage of 40V Max and a generous 5.0 Ah capacity delivers an impressive total energy of 180 Wh, comparable to 18V 10.0 Ah batteries, while maintaining a relatively compact size. This high energy output allows you to power even the most powerful XGT tools for extended periods: approximately 400 cuts in 2x4 timber with a circular saw, or 60 minutes of continuous grinding with an angle grinder, ensuring maximum productivity without frequent interruptions for recharging.

Exceptional Quebec Winter Performance- Cold resistance down to -20°C is a crucial advantage for Quebec professionals who regularly work outdoors during harsh winters. Unlike standard batteries that lose up to 50% of their capacity in cold weather, this XGT battery maintains optimal performance even on the coldest days thanks to its advanced thermal management and cell chemistry specially developed for extreme climates, ensuring absolute reliability year-round.

XGT Exclusive Platform CompatibilityThis battery works exclusively with Makita tools from the new 40V Max XGT platform, representing Makita's most technologically advanced range. XGT tools are specifically designed to take full advantage of the superior energy efficiency of XGT technology, delivering maximum performance unattainable with previous batteries and tools, justifying the investment in this next-generation platform for demanding professionals.

Recommended Additional Accessories

Makita 40V Max XGT Rapid Charger- Next generation smart charger that recharges your XGT 5.0 Ah battery in 45 to 60 minutes, with advanced LED indicators for detailed monitoring and an active cooling system that optimizes the lifespan of high-performance XGT batteries.

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

Makita 40V Max XGT Circular Saw- Ultra-powerful new generation saw taking full advantage of XGT technology for continuous powerful cuts in thick framing timber, plywood and construction materials without any slowdown.

Makita 40V Max XGT Angle Grinder- XGT high-performance grinder requiring 5.0 Ah battery power for prolonged intensive grinding and metal cutting work with constant power equivalent to professional corded grinders.

Makita 40V Max XGT Rotary Hammer- Ultra-powerful XGT hammer fully utilizing 180 Wh energy for prolonged intensive drilling in reinforced concrete, masonry and stone with unsurpassed maximum performance.

First Use

1. Complete Initial Inspection- Unpack your Makita 40V Max XGT battery and visually inspect it thoroughly to ensure no damage has occurred during shipping. Check that the new generation XGT electrical contacts are clean and free of dust or debris that could affect the optimal connection with your tools.
2. Initial Full Charge- Before first use, fully charge the battery for approximately 60 minutes with a compatible Makita 40V Max XGT charger. This initial charge optimizes the maximum capacity of 5.0 Ah and fully activates the sophisticated XGT electronic management system to ensure optimal performance and extended battery life.
3. XGT Functionality Test- Insert the battery into a compatible 40V Max XGT tool until you hear a locking click. Check the LED indicator to confirm a full charge and briefly test the tool to experience the superior energy efficiency and maximum power characteristic of next-generation XGT technology.
4. Familiarization with XGT TechnologyNote the exceptional performance of your XGT battery (extended runtime, consistent power, superior energy efficiency) compared to previous high-voltage batteries. XGT technology represents a significant advancement that you will immediately notice during intensive professional use.

Regular Maintenance

Monthly Checks

• Inspect the XGT electrical contacts and clean them gently with a dry cloth if necessary.
• Check the overall condition of the reinforced impact-resistant casing for cracks or damage.
• Test the LED indicator to ensure it is working correctly.
• Ensure that the XGT ventilation openings are not obstructed.

XGT Load Management

• Recharge the battery before it is completely discharged to optimize its lifespan.
• Use only Makita chargers certified as compatible with the new generation 40V Max XGT.
• Take advantage of the 45-60 minute fast recharge to maintain maximum productivity
• Avoid leaving the battery completely discharged for extended periods.

Performance Monitoring

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

Cleaning and Maintenance

Clean the exterior of the Makita XGT battery with a slightly damp cloth after use on dusty job sites, taking care to avoid getting water into the new generation XGT electrical connectors. Never use solvents, gasoline, or harsh chemicals that could damage the impact-resistant casing or compromise the sophisticated XGT electronics.

For XGT 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 the advanced XGT technology.

Regularly inspect the ventilation openings and use low-pressure compressed air to remove any accumulated dust. Never attempt to open the XGT battery case, as this will immediately void the 3-year warranty and irreparably damage the next-generation, ultra-sophisticated XGT electronic management system.

Precautions for Use

Never expose the Makita 40V Max XGT battery to temperatures above 50°C, as this could damage the new generation lithium-ion cells and compromise the XGT electronic system. Although this battery is exceptionally cold-resistant down to -20°C, avoid extreme thermal shock by allowing the battery to acclimatize gradually when moving between very different temperatures.

Avoid violent shocks, drops, and severe impacts that could damage the complex internal structure or the sophisticated XGT electronic protection system. Although the reinforced impact-resistant casing is ultra-robust, the 1.3 kg weight can cause significant damage if dropped from a considerable height.

Never use a battery that shows signs of physical damage, cracks, bulges, or leaks. Due to the high 40V voltage and advanced XGT technology, 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 partially, as moisture ingress could short-circuit the sophisticated XGT electronic system.

Storage Tips

Store your Makita 40V Max XGT battery in a cool, dry place, ideally at room temperature between 15°C and 25°C, away from direct sunlight and excessive humidity. The XGT management system is designed to protect the battery even during storage, but optimal conditions will further extend the lifespan of this premium, next-generation battery.

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. This practice is particularly critical for the new generation XGT batteries, whose superior energy efficiency must be preserved through optimal storage conditions.

Use the original packaging or a reinforced protective case to prevent accidental contact between the electrical terminals and metal objects. XGT high-power 40V batteries can deliver extremely high current in the event of a short circuit, posing a significant fire hazard.

Check and recharge the battery at least every 3 months, even if it is not in use. The XGT system minimizes natural self-discharge, but periodic recharging maintains optimal electrochemical health and ensures the battery is ready for immediate use with full XGT performance.

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 XGT 5.0 Ah lithium-ion battery, covering defects in workmanship and materials from the original purchase date. This extended warranty reflects Makita's confidence in the exceptional durability of the next-generation XGT technology and applies only to batteries used according to the manufacturer's instructions under normal, heavy-duty professional use.

What Is Covered

• Manufacturing defects in the new generation XGT lithium-ion cells
• Malfunctions of the sophisticated XGT electronic management system
• Problems with abnormal performance or premature loss of energy efficiency (XGT)
• Failures of the overload, overheating and over-discharge protection system
• Defects in the reinforced impact-resistant casing and XGT electrical connectors

Warranty Exclusions

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

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

❌ Damage resulting from exposure to water, excessive humidity or temperatures above 50°C

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

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

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

Complaint Procedure

1. Contact Polar Industrial Equipment- For any problem occurring within the first 30 days, first contact our local Quebec customer service who will assess the situation and guide you towards the appropriate solution, whether it is an immediate exchange or a full refund.
2. Gather the necessary documents- Prepare your original proof of purchase, the model number BL4050F and the serial number of the defective battery (written on the casing), and a detailed description of the problem encountered with XGT technology with photos if possible.
3. Problem Assessment- Our specialist technical team will analyze your claim to determine if the problem is covered by the Polar 30-day Industrial Equipment warranty or if it falls under the Makita 3-year manufacturer's warranty, taking into account the specifics of the new generation XGT technology.
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 on professional construction sites.
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 in French on the progress and accurate estimate of the deadlines.

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.