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Dewalt  |  SKU: DEWAC-DCB609-2

Dewalt FLEXVOLT 9Ah 2-Pack Battery

Regular price $479.00
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Description

What's in the Package

This set contains 2 FLEXVOLT DCB609 batteries of 9.0 Ah each, compatible with the entire range of Dewalt 20V MAX, 60V MAX and 120V MAX tools.

Product Overview

Dewalt FLEXVOLT 9.0 AH 20V/60V MAX batteries represent the ultimate innovation in cordless power for demanding professionals and DIYers. Thanks to patented FLEXVOLT technology, these batteries automatically switch voltages depending on the tool being used, offering unmatched versatility on all your jobsites. With an exceptional capacity of 9.0 Ah in 20V mode and 3.0 Ah in 60V mode, you get up to 6 times more runtime compared to standard 1.5 Ah batteries.

Each battery delivers 180 watt-hours of power, for a total of 360 watt-hours for the 2-pack. This massive power allows you to complete your most demanding tasks without interruption. Large-cell lithium-ion technology ensures cooler operation than competing batteries, guaranteeing optimal performance even during extended heavy use. The silicone-encapsulated module effectively protects against dust and jobsite debris.

The 3-level LED indicator instantly informs you of the remaining charge status, eliminating unpleasant surprises mid-work. Compatible with all existing Dewalt 20V MAX chargers, these batteries integrate seamlessly into your cordless tool ecosystem. Their rugged construction withstands shocks and harsh conditions, while their ability to operate down to -18°C makes them perfectly suited to Quebec's harsh climate.

Whether you're using a 20V drill for light-duty work or a 60V circular saw for heavy-duty cutting, these FLEXVOLT batteries automatically adapt to deliver the exact power and runtime you need. This 2-pack ensures maximum productivity with a fully charged spare battery always ready to go.

Key Points:

  • FLEXVOLT technology with automatic dual voltage 20V/60V
  • 9.0 Ah capacity offering up to 6X more battery life
  • 180 watt-hours per battery, 360 Wh total
  • Operates down to -18°C, ideal for Quebec's climate.
  • Compatible with all Dewalt 20V/60V/120V MAX tools and chargers

This 2-pack of Dewalt FLEXVOLT 9.0 AH batteries is ideal for contractors, carpenters, electricians, and all professionals requiring maximum power and runtime. Free shipping is available on orders of $150 or more across Canada.

Use

Ideal for:

  • Residential and commercial construction: framing, drywall installation, roofing
  • Carpentry work: precise cuts, complex assemblies, prolonged sanding
  • Electricity and plumbing: concrete drilling, metal conduit cutting
  • Major renovations: demolition, cutting of hard materials, high-power applications
  • Professional landscaping services: hedge trimmers, leaf blowers, lawnmowers for large areas
  • Winter outdoor work: performance maintained at negative temperatures down to -18°C
  • Remote worksites: extended battery life eliminates frequent battery changes
  • Industrial applications: intensive daily use, 60V high-power tools

Technical Specifications

  • Voltage: 20V MAX / 60V MAX (nominal voltage 18V/54V)
  • Capacity: 9.0 Ah in 20V mode, 3.0 Ah in 60V mode
  • Technology: Lithium-Ion FLEXVOLT with large format cells
  • Energy output: 180 watt-hours per battery
  • Charging indicator: 3-level LED
  • Operating temperature: -18°C to 50°C (0°F to 122°F)
  • Weight: 1.09 kg (2.4 lbs) per battery
  • Dimensions: 14.9 cm x 8.6 cm x 7.1 cm (5.9" x 3.4" x 2.8")
  • Charger compatibility: All Dewalt 20V MAX chargers
  • Tool compatibility: All Dewalt 20V MAX, 60V MAX and 120V MAX tools
  • Protection: Encapsulated silicone module against dust/debris
  • Cooling system: Patented large-format cell technology
  • Charging time: 90 minutes on DCB118 fast charger, 180 minutes on standard charger
  • Dewalt Manufacturer's Warranty: 3-year limited warranty + 1-year free service + 90-day satisfaction guarantee
  • Package contents: 2 FLEXVOLT DCB609 9.0 Ah batteries
  • Model number: DCB609-2
  • UPC Code: 885911458306
  • Country of manufacture: China
  • Certifications: CSA, cETLus

Product Set

Contents of the Dewalt FLEXVOLT DCB609-2 2-Battery Pack

Maximize your productivity with this complete set of two high-capacity batteries designed for demanding professionals. This dual pack ensures uninterrupted work time, with one battery always charged while the other powers your tools.

Included in your order:

2x FLEXVOLT DCB609 20V/60V MAX 9.0 Ah battery

Dual-voltage lithium-ion batteries with patented auto-change technology. Each unit delivers 180 watt-hours of pure power for exceptional runtime. Rugged construction with a silicone-encapsulated module that resists dust, debris, and splashes. Integrated 3-level LED indicator for instant charge status visibility. Overmolded, shock-resistant base protects against jobsite impacts. Instantly compatible with over 200 Dewalt 20V, 60V, and 120V MAX cordless tools.

Advantages of the FLEXVOLT 9.0 Ah 2-Pack Battery Pack

Substantial savings and maximum productivity

By purchasing this 2-pack of batteries, you benefit from better value for money compared to buying individual units. You also have a spare battery always available, eliminating costly downtime on your worksites.

Unparalleled professional autonomy

With 360 watt-hours of total available power, this pack ensures a full day of intensive work without recharging. Rotating between two batteries allows for continuous use while the other recharges, optimizing your operational efficiency.

Revolutionary dual-voltage versatility

The unique FLEXVOLT technology transforms these batteries into a universal power source for all your Dewalt tools. Use them on 20V drills in the morning, then switch to a 60V circular saw in the afternoon without changing batteries. This flexibility eliminates the need to carry multiple battery types around the job site.

Sustainable and reliable investment

Backed by Dewalt's comprehensive 3-year warranty, these high-capacity batteries represent a long-term investment. Their premium construction and advanced cooling technology ensure consistent performance even after hundreds of charge cycles.

Recommended Additional Accessories

Optimize your investment:

Dewalt DCB118 20V/60V MAX Fast Charger- These 9.0 Ah batteries fully recharge in just 90 minutes. Features an integrated fan and electronic diagnostics for optimal protection. Compatible with all Dewalt voltages. Sold separately.

FLEXVOLT 60V MAX DCS578 Circular Saw- Unleash the full power of your 9.0 Ah batteries with this 7-1/4" brushless saw, delivering power equivalent to a 15-amp corded saw. Cuts up to 291 2x4 boards per charge. Sold separately.

Dewalt 20V MAX XR DCD996 Impact Drill/Driver- Perfect with FLEXVOLT batteries for record runtime. Brushless motor, 3 speeds, 820 watt-out units. Drill into concrete and screw all day without recharging. Sold separately.

FLEXVOLT 60V MAX Angle Grinder DCG414- Use your 9Ah batteries for heavy-duty metal cutting and grinding. 4-1/2" to 5" disc, electric brake, kickback protection. Uncompromising professional power. Sold separately.

Care and Usage

First Use

Optimal activation of your new FLEXVOLT 9.0 Ah batteries:

1. Full initial charge

Install each new battery on a compatible Dewalt 20V MAX charger before first use. Allow it to charge fully until the green LED indicator turns off, typically 90 to 180 minutes depending on the charger. This initial charge calibrates the lithium-ion cells and activates the internal electronic management system for optimal performance.

2. Pre-use visual inspection

Inspect each battery to ensure no damage has occurred during shipping. Check that the metal contacts are clean and free of debris, that the casing is free of cracks, and that the LED indicator is working correctly by pressing the test button.

3. Tool compatibility test

Install the charged battery in one of your Dewalt 20V or 60V MAX tools to confirm proper operation. The battery should click securely into place. Test the tool briefly to verify that power is delivered normally and that the tool's LED indicator lights up.

4. Recommended break-in period during the first week

During the first 5 charge/discharge cycles, avoid completely draining the batteries to the point where the tool shuts off. Instead, recharge when the LED indicator shows 1 bar remaining. This gradual break-in optimizes the internal chemistry of the lithium-ion cells to maximize their lifespan.

Regular Maintenance

To maximize the lifespan of your FLEXVOLT 9.0 Ah batteries:

After each use:

  • Remove the battery from the tool and wipe the metal contacts with a dry cloth to remove dust and debris
  • Check the LED indicator to assess the remaining charge and plan a recharge if necessary.
  • Store the batteries in a dry place at room temperature, never on the charger when fully charged.
  • Avoid leaving batteries exposed to direct sunlight or in a hot vehicle during the summer.

Optimal load management:

  • Recharge the batteries as soon as the LED indicator shows 1 bar to avoid excessive deep discharge
  • Never leave a battery completely discharged for more than 24 hours without recharging it.
  • Use only genuine Dewalt 20V MAX chargers to ensure balanced and safe charging
  • Regularly alternate between your two batteries to balance the charging cycles and extend their lifespan.

Rotation and inspection recommended:

  • Inspect the batteries monthly for any swelling, cracking, or deformation.
  • Clean the metal contacts every 15 days in dusty environments with isopropyl alcohol and a cotton swab.
  • Periodically test the operation of the LED indicator to ensure its reliability.

Cleaning and Maintenance

Deep monthly cleaning:

1. Electrical contacts

Clean the four metal contacts of each battery with a cotton swab moistened with 99% isopropyl alcohol. Gently rub to remove oxidation, grease residue, or embedded dust. Allow to dry completely for 5 minutes before use. Avoid water, WD-40, or harsh solvents that can damage electronic components.

2. External casing

Wipe the plastic casing with a damp, slightly soapy cloth to remove any accumulated dirt, oil, and debris. Pay particular attention to the side ventilation grooves where dust tends to collect. Dry immediately with a dry cloth. Never immerse the battery in water or use a high-pressure washer.

3. LED indicator button and grip areas

Clean the LED button and textured side areas with a dry, soft toothbrush to remove any embedded debris. Then wipe with a damp cloth. These areas tend to accumulate sawdust, concrete dust, and hand oils, which reduce grip.

4. Locking mechanism

Inspect and clean the side locking tabs with a dry cotton swab. Remove any debris that prevents them from fully engaging on the tools. Never lubricate these mechanisms, as lubricants attract dust and can compromise electrical connections.

Precautions for Use

For your safety:

  • Never attempt to open, disassemble, or repair a FLEXVOLT battery yourself; risk of explosion or fire. Only authorized Dewalt service centers may perform in-house repairs.
  • Avoid any violent shock, drops from a height greater than 1 meter, or crushing of the battery. Severe impact can damage internal cells and cause a dangerous short circuit, even without any visible external signs.
  • Never expose batteries to extreme temperatures above 50°C or below -20°C during storage. Excessive heat accelerates chemical degradation, while extreme cold can crack the casing.
  • Never store lithium-ion batteries near flammable materials, heat sources, or in direct sunlight. Maintain a minimum distance of 1 meter from radiators, furnaces, or south-facing windows.
  • Stop use immediately if the battery emits an unusual odor, becomes abnormally hot to the touch, leaks fluid, or shows visible swelling. Isolate the battery in a metal container outdoors and contact Dewalt service.
  • Never short-circuit metal contacts with conductive objects such as keys, coins, or metal tools. A short circuit causes an extremely dangerous instantaneous discharge that can cause severe burns.

Storage Tips

Short-term storage (less than 7 days):

  • Ideal temperature: 15°C to 25°C in a workshop, heated garage or basement
  • Optimal charge level: Between 30% and 80% (2 LED bars) to preserve cells
  • Location: Stable, flat surface, protected from excessive moisture and dust
  • Distance: Minimum 30 cm from other batteries or metallic objects

Medium-term storage (1 week to 3 months):

  • Charge the batteries to 50-60% (2 LED bars) before prolonged storage
  • Check the charge level monthly and recharge if the indicator shows 1 bar or less.
  • Store in the original carrying case or plastic box with a dust cover.
  • Avoid storing in an unheated vehicle where the temperature fluctuates considerably.

Long-term (more than 3 months) and winter storage in Quebec:

  • Storage charge level: 40-50% (1-2 LED bars) to minimize cell stress during inactivity
  • Winter storage temperature: Between 5°C and 20°C, never in an unheated garage below -5°C
  • Check frequency: Every 2 months, recharge to 50% if the charge has dropped below 30%.
  • Additional protection: Place batteries in an airtight plastic bag to protect them from winter moisture.
  • Returning to service after prolonged storage: Allow batteries to reach room temperature (15-20°C) for 2-3 hours before first recharging

Expected lifespan with proper storage: 1000 to 1500 complete charge cycles, or 3 to 5 years of intensive professional use or 5 to 8 years of moderate residential use.

Warranty

Dewalt Warranty Cover

Warranty period:

  • Dewalt 3-year limited manufacturer's warranty against manufacturing and material defects
  • 1 year free maintenance contract including labor at authorized service centers
  • Dewalt's 90-day satisfaction guarantee allows returns if you are not satisfied with the performance.

The warranty begins on the original purchase date as confirmed by proof of purchase. Dewalt also offers a free replacement warranty during the first year in the event of a covered defect.

What Is Covered

The Dewalt and Polar Industrial Equipment limited warranty covers:

Manufacturing defects

Internal welding problems, faulty lithium-ion cell assembly, electronic control circuit failures, or any anomaly resulting from the manufacturing process. Dewalt will replace the defective battery free of charge during the warranty period.

Material defects

Plastic casing cracking without external impact, abnormal deterioration of metal contacts, LED indicator ceasing to function, or problems with internal components due to inferior materials. Guaranteed replacement.

Abnormal performance

Excessive capacity loss exceeding 30% during the first year of normal use, inability to maintain charge, abnormally short discharge time not meeting specifications, or overheating during standard use. Dewalt will evaluate and replace the product if the defect is confirmed.

Repair labor

During the first year, all diagnostic, disassembly and repair costs performed by authorized Dewalt service centers are covered at no additional cost for defects covered by warranty.

What Dewalt will do:

  • Free battery repair at an authorized service center if possible
  • Replacement with a new or refurbished battery of equivalent capacity if repair is impossible
  • Refund of the purchase price if a replacement is unavailable

Warranty Exclusions

The warranty does NOT cover:

  • Normal wear and tear includes a gradual decrease in capacity after hundreds of charge cycles, discoloration of the casing due to sunlight, superficial scratches, or signs of daily use. A 1% loss of capacity per year is considered normal.
  • Physical damage resulting from falls from excessive heights, crushing under heavy objects, casing perforation, immersion in water, or exposure to flames. Accidental impacts are not covered.
  • Misuse, including attempting to open or modify the battery, using non-Dewalt chargers, intentionally short-circuiting the contacts, or using it with incompatible tools, voids the warranty.
  • Extreme conditions such as prolonged exposure to temperatures below -20°C or above 60°C, storage in excessively humid environments above 90% relative humidity, or use in areas with explosive atmospheres.
  • Neglect of maintenance such as excessive accumulation of uncleaned debris, corroded contacts due to lack of maintenance, or damage due to prolonged storage completely discharged for more than 6 months.
  • Batteries purchased second-hand, unofficially refurbished, grey imports without a Canadian invoice, or products from unauthorized Dewalt Canada resellers.

Complaint Procedure

How to file a claim in 4 steps:

Step 1: Documentation Preparation

Locate your original proof of purchase showing the date and place of purchase. Note the exact model number (DCB609-2), the serial number engraved on the battery, and a detailed description of the problem. Take clear photos of the defect if visible. Keep the original packaging if possible for return shipping.

Step 2: Contact the appropriate service

For returns within 30 days or questions about your order:

Polar Industrial Equipment Customer Service:

  • Telephone: 1-800-567-3206
  • E-mail:info@equipementpolar.com
  • Address: 3425 Wilfrid-Hamel Boulevard, Quebec City, QC
  • Hours: Monday to Friday, 8:00 AM to 5:00 PM (EST)

For Dewalt manufacturer's warranty claims (after 30 days):

Dewalt Canada Service:

  • Website:www.dewalt.ca/support
  • Locator of authorized service centers available online
  • Customer service phone number: 1-800-433-9258

Step 3: Shipping Procedure

For returns to Polar Industrial Equipment within 30 days, pack batteries securely in a cardboard box with protective material. Include proof of purchase and the return form available on our website. We will provide a prepaid return label via email. For Dewalt warranty claims, follow the instructions of your assigned authorized service center.

Step 4: Processing and Resolution

Polar Industrial Equipment processes returns within 3-5 business days for a 30-day refund or replacement. Dewalt warranty claims require 7-14 days for assessment and repair or replacement. You will be contacted by email or phone during the process for updates.

Additional Advantages of Polar Industrial Equipment:

  • Free telephone technical support for usage and compatibility questions
  • Free recycling program for end-of-life batteries
  • Priority access to new Dewalt batteries upon their launch

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Our answers to your questions about Dewalt FLEXVOLT 9.0 Ah batteries

How long does a DeWalt FLEXVOLT 9.0 Ah battery last?

Runtime varies depending on the tool used and work intensity. On a standard 20V MAX drill/driver, you can drive approximately 1,000 3-inch screws into hardwood or drill 150 one-inch holes in hard wood before a full recharge is needed. On a 60V MAX circular saw, expect to cut around 300 pieces of 2x4 lumber per charge. For light applications such as a work light or jobsite radio, the battery can run continuously for 15 to 20 hours.

In 20V mode with a full 9.0 Ah charge, typical runtime is 6 to 8 hours of intensive professional work. In 60V mode at 3.0 Ah, expect 2 to 4 hours depending on power demand. FLEXVOLT technology automatically optimizes energy distribution to maximize runtime based on the required voltage.

What is the difference between the DeWalt 9.0 Ah and 6.0 Ah batteries?

The main differences are:

Energy capacity:

9.0 Ah provides 180 watt-hours versus 120 watt-hours for the 6.0 Ah

50% more runtime with the 9.0 Ah for the same tool and task

Ideal for full workdays without easy access to charging

Size and weight:

9.0 Ah weighs 1.09 kg compared to 0.9 kg for the 6.0 Ah

Slightly larger, but the difference is negligible on medium and large tools

Minimal extra weight is more than offset by the runtime gain

Price and value:

9.0 Ah costs approximately 30% more than the 6.0 Ah per unit

Better watt-hour-per-dollar value with the 9.0 Ah for professional use

A worthwhile investment if you use high-power tools daily

Recommended applications:

Choose the 6.0 Ah for light tools and occasional residential use

Choose the 9.0 Ah for intensive professional work and 60V MAX tools

Are FLEXVOLT 9.0 Ah batteries compatible with all my DeWalt 20V tools?

Yes, full compatibility is guaranteed. These FLEXVOLT batteries work perfectly with all DeWalt 20V MAX tools sold since 2011, including drills, impact drivers, saws, grinders, nailers, and all other tools that slide onto the 20V MAX rail.

FLEXVOLT technology automatically detects whether the tool requires 20V or 60V and adjusts the voltage accordingly without any action required from you. On a 20V tool, the battery delivers the full 9.0 Ah for maximum runtime. On a 60V tool, it provides 3.0 Ah with triple power.

They are also compatible with 120V MAX tools that require two FLEXVOLT batteries simultaneously, such as certain cordless DeWalt miter saws and table saws. There are no compatibility limitations operation is guaranteed on all equipment bearing the 20V MAX or 60V MAX logo.

What is included in this 2-battery pack?

This DCB609-2 pack includes only two brand-new FLEXVOLT 9.0 Ah batteries in sealed DeWalt packaging. No charger is included.

If you do not already own a DeWalt charger, we recommend purchasing the DCB118 fast charger separately, which can fully recharge these 9.0 Ah batteries in just 90 minutes. Standard DeWalt 20V MAX chargers also work but require approximately 3 hours for a full charge.

Each battery is shipped with a factory partial charge of approximately 30–40% for immediate testing. However, perform a full charge before first intensive use to calibrate the electronic management system and optimize long-term performance.

What is your return policy for these batteries?

Équipement Industriel Polar offers a 30-day satisfaction guarantee with no conditions. If the batteries do not meet your expectations for performance, runtime, or quality, return them within 30 days of receipt for a full refund.

The batteries must be in resalable condition, in the original packaging with all accessories and documentation. We provide a prepaid return label by email. Refunds are processed within 3–5 business days after receipt and inspection.

After 30 days, the batteries are covered by DeWalt’s 3-year manufacturer warranty against defects in materials and workmanship. For DeWalt warranty claims, contact customer service at 1-800-433-9258 or visit dewalt.ca to locate an authorized service center near you.

How can I maintain and maximize the lifespan of my FLEXVOLT 9.0 Ah batteries?

Follow these essential maintenance practices:

Optimal charging management:

Recharge the battery as soon as the LED indicator shows 1 bar remaining

Avoid repeated full discharges until the tool completely stops

Never leave a battery fully discharged for more than 24 hours

Store batteries at 40–60% charge for long-term storage

Regular cleaning:

Wipe metal contacts after each dusty workday

Clean monthly with isopropyl alcohol to remove oxidation

Regularly remove debris from the side ventilation slots

Operating conditions:

Avoid direct sunlight exposure during lunch breaks

Do not leave batteries in a hot vehicle in summer or extreme cold in winter

Allow batteries to cool for 15 minutes after intensive use before recharging

Proper storage:

Store between 5°C and 25°C in a dry environment

Keep in a protective case or closed box to prevent dust buildup

Check charge every 2 months during long-term storage and recharge if necessary

Refer to the Maintenance and Use section above for complete detailed instructions.

Are FLEXVOLT batteries resistant to Québec’s climate and do they work in winter?

Yes, these batteries are perfectly suited to Québec’s harsh climate. They operate within a temperature range of -18°C to 50°C, which fully covers typical Québec winter conditions.

Cold-weather performance:

Runtime is reduced by approximately 20–30% between -10°C and -18°C compared to 20°C

The battery warms up during use and returns to normal performance after 2–3 minutes

Pre-warm batteries by keeping them in an inside jacket pocket before installing on the tool

Winter storage:

Never leave batteries overnight in an unheated truck during winter

Bring batteries indoors every evening if temperatures fall below -5°C

Allow batteries to reach room temperature before recharging after cold exposure

Moisture protection:

A silicone-encapsulated module protects against melting snow and drizzle

Wipe batteries dry if exposed to precipitation before storage

Avoid direct immersion in slush or puddles, but splash resistance is excellent

Thousands of Québec professionals use FLEXVOLT batteries daily on outdoor winter jobsites with success. Construction, roofing, and exterior renovations during the Canadian winter pose no issues when basic precautions are followed.