Free shipping on orders of $150 or more. Order online only. 40 lbs or less.

Subscribe to our newsletter and receive 10% off your first order

Get ready for winter with our lined coats and gloves

Milwaukee  |  SKU: MLW-48-11-1813

MILWAUKEE 18V 12Ah FORGE BATTERY

Regular price $499.00
Shipping calculated at checkout.

Free Shipping

Orders $150+

Some restrictions may apply

30-Day Returns

Satisfaction guaranteed

2-5 Days Delivery

Across Canada

Description

What the Product Contains

This Milwaukee M18 REDLITHIUM FORGE HD12.0 18-volt, 12-amp-hour battery is sold individually.

Product Overview

The Milwaukee 18V 12Ah M18 REDLITHIUM FORGE battery represents the most advanced innovation in professional cordless tool batteries. This high-capacity battery delivers 50% more power compared to the M18 HIGH OUTPUT 12.0 battery, allowing professionals to tackle more demanding jobs without interruption. Thanks to Milwaukee's exclusive FORGE technology, you get the optimal combination of maximum power, exceptional runtime, and superior durability.

This Milwaukee FORGE battery incorporates the revolutionary COOL-CYCLE system, which provides active cooling at high speeds. This system significantly reduces downtime by maintaining the battery at optimal temperature, even during intensive applications. The patented anti-infiltration coating protects the electronic components while maximizing cooling efficiency through an improved ventilation design. This protection allows your M18 battery to withstand the toughest jobsite conditions.

Ultra-fast charging is a major advantage of the Milwaukee 12Ah FORGE battery. With the M18 Dual Bay Super Charger, reach 80% capacity in just 35 minutes and a full charge in 45 minutes. This rapid charging allows you to maintain maximum productivity throughout the day. Integrated REDLINK intelligence continuously optimizes performance while protecting against overload, ensuring the longevity of your cordless tools and battery.

Key Points:

  • 12 amp-hour capacity for maximum autonomy on demanding worksites
  • 50% more power than Milwaukee HIGH OUTPUT 12.0 battery
  • Ultra-fast charging to 80% in 35 minutes with a compatible charger
  • COOL-CYCLE system for active cooling and reduced downtime
  • Compatible with all 250+ tools on the M18 platform

Ideal for construction professionals, general contractors, and demanding users requiring continuous performance, this Milwaukee FORGE battery guarantees uncompromising productivity. Its durable casing protects against common oils, greases, and solvents. Weighing 1.5 kg, it easily fits all your existing M18 tools.

Use

Ideal for:

  • intensive residential and commercial construction
  • Professional electrical installation and renovation
  • Plumbing and mechanics with high-demand tools
  • Extended carpentry and joinery work
  • Using powerful tools such as 7-1/4 inch circular saws
  • M18 Impact Drills and Rotary Hammers
  • Angle grinders and metal cutters
  • Working at heights requires a lightweight but powerful battery

Technical Specifications

  • Voltage: 18V (18 volts nominal)
  • Capacity: 12.0 Ah (ampere-hours)
  • Technology: REDLITHIUM FORGE lithium-ion
  • System: M18
  • Power level: PWR Level 4 on the REDLITHIUM scale
  • Charging time (80%): 35 minutes with M18 Dual Bay Super Charger
  • Charging time (100%): 45 minutes with M18 Dual Bay Super Charger
  • Standard charging time: Varies depending on charger model (60-285 minutes)
  • Cooling system: COOL-CYCLE active compatible
  • Protection: REDLINK Intelligence with tool-battery-charger communication
  • Casing: Resistant construction against oils, greases, and solvents
  • Charging indicator: Enhanced LED gauge readable in direct sunlight
  • Weight: 1.5 kg (3.3 lb)
  • Compatibility: 250+ M18 platform tools
  • Operating temperature: Performs well down to -18°C (0°F)
  • Manufacturer's warranty: 3 years Milwaukee
  • Model code: 48-11-1813
  • Origin: United States

Product Set

Contents of Your Milwaukee FORGE Battery

This purchase includes a professional-grade individual Milwaukee M18 REDLITHIUM FORGE HD12.0 battery.

Included in your order:

1x Milwaukee M18 REDLITHIUM FORGE HD12.0 18V 12Ah battery

High-performance lithium-ion battery with exclusive FORGE technology. Equipped with the COOL-CYCLE system for active cooling and an enhanced LED charge indicator for optimal visibility even in direct sunlight. Rugged construction with a patented, durable housing that protects against oils, solvents, and greases commonly found on job sites. Integrated REDLINK intelligence provides overload protection and optimized communication with compatible M18 tools and chargers.

Advantages of the Milwaukee FORGE HD12.0 Battery

Maximum Performance 50% Higher

With 50% more power compared to the HIGH OUTPUT 12.0 battery, this Milwaukee FORGE battery propels your M18 tools to unsurpassed levels of performance. Get more work done per charge on demanding applications like circular saws, grinders, and rotary hammers.

Increased Productivity through Ultra-Fast Recharging

Minimize downtime with express charging that reaches 80% in just 35 minutes. This exceptional speed allows you to maintain a sustained work pace without extended waits, maximizing your daily profitability on the job site.

Exceptional Durability and Longevity

Invest in REDLITHIUM FORGE technology, offering the longest lifespan, the most recharge cycles, and the best performance maintained throughout the battery's life. Make your purchase worthwhile over years of heavy use.

Integrated Professional Protection

The patented, robust casing and COOL-CYCLE system protect your investment against harsh conditions. Resistance to shocks, oil ingress, solvent exposure, and extreme temperatures down to -18°C ensures reliability in all circumstances.

Recommended Additional Accessories

Optimize your investment:

Care and Usage

First Use

Optimal activation of your Milwaukee FORGE battery:

  1. Full initial charge: Place the new battery on a compatible M18 charger and allow it to reach 100% before first use. This initial charge optimizes the lithium-ion cells and ensures maximum performance from the start.
  2. LED indicator check: Press the charging indicator button to familiarize yourself with the display. The four LED lights indicate the level: 4 lights = full charge, 1 light = low charge needed.
  3. Installation on M18 tool: Align the battery with the tool base until it clicks into place, confirming a secure connection. Check that the battery is firmly installed before use.
  4. Performance test: Perform a light task test to confirm proper operation and familiarize yourself with the exceptional 12 amp-hour battery life.

Regular Maintenance

To maximize the lifespan of your Milwaukee FORGE battery:

After each use:

  • Remove the battery from the tool if it will not be used for more than one hour to preserve the cells.
  • Clean the contacts with a dry cloth to maintain optimal connection
  • Visually inspect the casing for any damage.

Load management:

  • Charge the battery before it reaches full capacity to prolong its lifespan.
  • Use only genuine Milwaukee M18 magazines
  • Do not leave the battery on the charger for more than 24 hours after a full charge.

Recommended rotation:

  • If you have several batteries, alternate their use for even wear.
  • Recharge all your batteries at least once a month, even if they are not in use.

Cleaning and Maintenance

Deep monthly cleaning:

Electrical contacts – Use a soft, antistatic brush or a slightly damp microfiber cloth to remove dust and residue. Dry completely before use. Never use harsh chemicals on the contacts.

Exterior casing – Wipe with a damp cloth and mild soap to remove accumulated oils, grease, or dirt. The durable Milwaukee casing tolerates standard non-corrosive cleaning products. Dry thoroughly.

Ventilation openings - Check that the COOL-CYCLE system vents are not blocked by dust. Use low-pressure compressed air if necessary to clear the vents without damaging internal components.

LED Indicator - Clean the surface of the charging indicator to maintain optimal readability in direct sunlight. Avoid scratches that could reduce visibility.

Frequency: Light cleaning weekly in heavy use, deep cleaning monthly recommended.

Precautions for Use

For your safety and optimal longevity:

  • Avoid drops and violent impacts – Although robust, the battery contains sensitive electronics that can be damaged by severe shocks. Handle with care.
  • Do not expose to liquids – Despite splash protection, avoid complete immersion in water or other liquids. If exposure occurs, dry immediately and allow to dry for 24 hours before reuse.
  • Storage temperature - Never leave the battery in a vehicle exposed to extreme heat (summer) or prolonged intense cold (winter). Extreme temperatures reduce performance and lifespan.
  • Do not attempt to open or repair the battery – it contains sophisticated electronic components. Any modification will void the warranty and pose safety risks. Have all repairs done by an authorized Milwaukee service center.
  • Watch for signs of abnormal wear - If the battery swells, overheats, has an unusual odor or rapidly loses capacity, stop use immediately and contact customer service.

Storage Tips

Short-term storage (less than 2 weeks):

  • Keep the battery charged between 40% and 80% to preserve cell health
  • Store at room temperature 15-25°C in a dry place
  • Remove from the tool if stored even briefly
  • Avoid direct exposure to sunlight or heat sources

Long-term storage (more than 2 weeks):

  • Charge to 50-60% before prolonged storage (optimal for lithium-ion cells)
  • Store in a dry environment at a temperature of 15-20°C ideally.
  • Recharge every 3 months to compensate for natural self-discharge
  • Check charge level before putting back into service
  • Perform a full charge cycle after prolonged storage to recalibrate.

Winter storage in Quebec:

  • Never leave in a vehicle or unheated shed during winter
  • Store in a heated garage or temperature-controlled residence
  • If the battery has been exposed to cold, allow it to return to room temperature for 30 minutes before charging or use.
  • The Milwaukee FORGE battery operates down to -18°C but performs optimally between 0-40°C

Expected lifespan: With proper storage and moderate charge cycles, expect 3-5 years of professional use or 1000+ full recharge cycles before noticeable capacity degradation.

Warranty

Milwaukee Warranty Cover

Warranty period:

  • Milwaukee 3-year limited manufacturer's warranty
  • Warranty begins on the original purchase date
  • Protection against manufacturing and material defects
  • Product registration recommended at warranty.milwaukeetool.eu for automatic extension

What Is Covered

The Milwaukee limited warranty covers:

Manufacturing defects – Any material defect or assembly error detected during normal use. Includes defects in lithium-ion cells, electronic circuits, and structural components.

Material defects - Defective components or materials not conforming to Milwaukee standards. Includes housing, electrical contacts, COOL-CYCLE system and REDLINK intelligence.

Abnormal performance - Unusual loss of capacity, excessive charging time or premature failure not attributable to misuse during the warranty period.

What Milwaukee will do:

  • Free replacement of the defective battery with a new or refurbished unit
  • Professional repair at an authorized service center if applicable
  • Return shipping costs will be covered according to the current policy.

Warranty Exclusions

The warranty does NOT cover:

Normal wear and tear - Gradual capacity degradation inherent to lithium-ion batteries after numerous charge/discharge cycles. A 20% capacity loss after 500+ cycles is considered normal.

Physical damage - Cracks in the casing, damaged contacts, deformations caused by drops, impacts, crushing or accidents. Cosmetic damage not affecting functionality.

Misuse – Overloading non-Milwaukee chargers, prolonged exposure to extreme temperatures, liquid immersion, unauthorized modification or opening attempts. Commercial rental use without proper maintenance.

Neglect of maintenance - Failures resulting from non-compliance with maintenance instructions, dirty/corroded contacts, inadequate long-term storage, absence of preventive maintenance.

Product incompatibility - Damage caused by use with counterfeit, modified or non-certified Milwaukee M18 tools or chargers.

Indirect damages - Lost time, reduced productivity, related tool damage or associated costs not directly related to the battery defect.

Complaint Procedure

How to file a claim in 3 steps:

Step 1: Documentation Preparation

Keep:

  • Original purchase receipt for Polar Industrial Equipment
  • Battery model number (48-11-1813)
  • Detailed description of the problem encountered
  • Photos of the defect if visible

Step 2: Contact the appropriate service

Polar Industrial Equipment Customer Service (30-day money-back guarantee):

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

Milwaukee Canada warranty service (3-year manufacturer's warranty):

Step 3: Processing your claim

30-day return policy for Polar Industrial Equipment:

  • Contact our customer service by phone or email
  • Obtain return authorization number
  • Return the battery in its original packaging if possible.
  • Refunds or exchanges processed within 5-7 business days

Milwaukee manufacturer's warranty:

  • Milwaukee assesses eligibility according to warranty terms
  • Battery sent to authorized service center if repair required
  • Replacement or repair typically completed within 2-3 weeks
  • Battery returned free of charge if the defect is covered by the warranty.

Additional Advantages of Polar Industrial Equipment:

  • Free technical advice from our team of experts
  • French-speaking after-sales service dedicated to Quebec
  • Personalized monitoring of your warranty claim
  • Priority access to our replacement battery inventory

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 the Milwaukee 18V 12Ah FORGE Battery

How long does the runtime of this Milwaukee 12Ah battery last?

Runtime varies depending on the tool and the application used. On a standard M18 drill/driver in moderate use, expect 6–8 hours of continuous work. For high-demand applications such as a 7-1/4 inch circular saw, count on 400–600 cuts in 2x4 construction lumber.

On a 4-1/2 inch angle grinder, achieve 120–150 minutes of metal cutting. The 12 amp-hour capacity offers approximately 2.5 times the runtime of a standard 5Ah battery. In intensive mixed professional use, a single charge generally covers a full 8-hour workday.

What is the difference between the FORGE and the HIGH OUTPUT 12.0 battery?

Main differences between Milwaukee FORGE HD12.0 and HIGH OUTPUT 12.0:

Power delivered:

FORGE: 50% more maximum power

HIGH OUTPUT: Standard high-performance power

Charging speed:

FORGE: 35 min to 80% with compatible COOL-CYCLE super charger

HIGH OUTPUT: 60 min to 80% with standard super charger

Cooling system:

FORGE: Integrated active COOL-CYCLE system with improved ventilation

HIGH OUTPUT: Standard passive thermal management

Lifespan:

FORGE: Maximum longevity, greater number of recharge cycles

HIGH OUTPUT: Excellent standard Milwaukee durability

Price:

FORGE: Premium (typically $499 CAD)

HIGH OUTPUT: About 20–30% less expensive

The FORGE justifies the investment for professionals requiring maximum performance, ultra-fast charging, and intensive daily use with minimal downtime.

Is this battery compatible with all my Milwaukee M18 tools?

Yes, complete universal compatibility is guaranteed. The Milwaukee M18 REDLITHIUM FORGE HD12.0 battery works with the entire 250+ tool M18 platform, including:

Existing tools:

All M18 drills and hammer drills

Impact drivers, impact wrenches

Circular saws, jigsaws, reciprocating saws

Angle grinders of all sizes

Rotary hammers and demolition hammers

Specialty tools (nailers, staplers, miter saws)

New generation:

M18 FUEL tools (brushless)

ONE-KEY connected equipment

Light-duty and high-demand applications

Total backward compatibility:

Compatible even with the first M18 tools released 15+ years ago

No functional limitations regardless of tool age

Optimized performance on recent FUEL tools

Note: Although universally compatible, the 12Ah capacity is particularly advantageous for high-demand tools. On light tools (lights, radio), 6Ah or lower capacity is often sufficient and less bulky.

What is included with the purchase of this battery?

This purchase includes:

Included:

  • 1x Milwaukee M18 REDLITHIUM FORGE HD12.0 battery (18V 12Ah)
  • Milwaukee manufacturer 3-year warranty
  • Équipement Industriel Polar 30-day satisfaction guarantee
  • Warranty documentation and safety instructions

Not included (sold separately):

M18 charger (required for recharging)

M18 Dual Bay super charger (recommended for optimal fast charging)

M18 tools

Carrying case or storage

Important: Make sure you own a compatible M18 charger. To fully exploit the 35-minute fast charging capability, invest in the M18 Dual Bay Simultaneous super charger (model with COOL-CYCLE function). Standard M18 chargers work but with extended charging times (60–285 minutes depending on model).

What is your return policy for this battery?

Équipement Industriel Polar return policy – Guaranteed simplicity:

Return period: 30 days following receipt

Conditions:

  • Product unused or lightly used in resalable condition
  • Original packaging retained if possible (not mandatory)
  • Proof of purchase (receipt, order confirmation)
  • No signs of modification or physical damage

Procedure:

Contact customer service: 1-800-567-3206

Obtain return authorization number (required)

Return battery via carrier of choice or in-store

Full refund processed 5–7 business days after receipt

Return shipping:

Return shipping at customer’s expense unless product defect

Free return in store at 3425 Boul. Wilfrid-Hamel, Quebec

Exchange options:

Exchange for a different model accepted subject to availability

Store credit offered as an alternative

Satisfaction guaranteed: If the battery does not meet your performance expectations, return it within 30 days for a full refund. Our absolute quality commitment.

How should I maintain this Milwaukee battery?

Optimal maintenance in 5 essential practices:

Proper charging:

Recharge before complete depletion (avoid repeated deep discharges)

Use only authentic Milwaukee M18 chargers

Do not leave on the charger more than 24h after reaching 100%

Recharge at least once per month even if unused

Regular cleaning:

Wipe contacts with a dry cloth after use in dusty environments

Clean the exterior housing monthly with a damp cloth and mild soap

Ensure COOL-CYCLE ventilation openings remain unobstructed

Dry completely before use after cleaning

Smart storage:

Store at 50–60% charge for long-term storage

Ideal temperature 15–25°C, dry location away from direct sunlight

Never leave in a vehicle in winter (risk of freezing) or summer (excessive heat)

Remove from tool if not used for more than 1 hour

Reasonable use:

Avoid drops and violent impacts

Allow to cool 15 minutes after intensive use before recharging

Alternate between several batteries for prolonged daily work

Monitor LED indicator to recharge before total depletion

Condition monitoring:

Visually inspect housing monthly (cracks, deformation)

Contact Milwaukee service if swelling, excessive heat, or unusual odor occurs

Test performance periodically to detect abnormal capacity loss

Follow these simple practices to maximize a 3–5 year lifespan and maintain optimal performance over 1000+ recharge cycles.

Does this battery withstand the harsh Quebec winter climate?

Yes, excellent resistance to cold Canadian climate. Winter performance:

Operating temperature range:

Guaranteed minimum temperature: -18°C (0°F)

Optimal performance: 0°C to +40°C

Usable at lower temperatures but with reduced runtime

Milwaukee cold-climate advantages:

REDLITHIUM technology:

Cells specially formulated for cold climates

Maintains power even at negative temperatures

Protection against excessive discharge in cold weather

Adaptive intelligent thermal management

Robust construction:

Sealed housing protecting against snow and moisture

Corrosion-resistant contacts against de-icing salt

Electronics protected against infiltration

Winter use tips:

Before heading out:

Keep battery at room temperature until departure

Warm in an inner pocket 10–15 minutes if stored in the cold

Fully charge before exposure to negative temperatures

On the jobsite:

Keep spare battery warm in a heated vehicle

Alternate batteries to maintain operating temperature

Wait a few minutes after installation before intensive use

Normal performance restored once battery warms through use

After work:

Bring batteries indoors to room temperature

Allow to warm 30 minutes before recharging if very cold

Never charge a frozen battery (risk of damage)

Compared to standard batteries:

Standard batteries: Runtime drops 30–50% below -10°C

FORGE REDLITHIUM: Runtime reduced only 15–20% even at -18°C

Verdict: Among the best batteries on the market for Quebec winter conditions. Construction and exterior renovation professionals use it regularly all winter with excellent results.

Can I use this 12Ah battery on light tools like an M18 light?

Yes, full compatibility but important considerations:

Technical compatibility:

Works perfectly on all M18 tools including lights, radio, fans

Identical connection, no electrical or safety issues

REDLINK intelligence automatically adapts output according to tool needs

Practical aspects:

Advantages on light tools:

Exceptional runtime (M18 light: 30+ continuous hours)

Ideal if one single battery is used for the entire tool range

Eliminates frequent battery changes on long days

Disadvantages on light tools:

Additional weight 1.5 kg may unbalance small tools

Larger size than 2–3Ah batteries

Unnecessary overcapacity for short-duration applications

High cost not justified if used exclusively on light tools

Optimal recommendations:

For light tools (lights, radio, drill occasional use):

2Ah, 3Ah, or 5Ah batteries more appropriate (lightweight, compact, economical)

For high-demand tools (saws, grinders, hammers):

12Ah FORGE battery ideal and fully justified

Daily mixed use:

Keep the 12Ah FORGE for powerful tools

Complement with a 5–6Ah battery for medium tools

Add a compact 2–3Ah for portable light tools

Conclusion: Technically compatible and functional, but the $499 investment is better justified on high-demand tools that truly require this exceptional capacity.