Important Safety Instructions
WARNING:
Read and understand all instructions before use. Failure to comply with these safety guidelines may result in electric shock, fire, and/or serious personal injury. Save this manual for future reference.
1. Charging Requirements
- Charge only with Milwaukee® M18™ lithium-ion chargers (e.g., M12-18SC, 48-59-1807). Use of non-approved chargers may cause battery rupture or injury.
- Do not connect the battery pack to a power outlet or car cigarette lighter—permanent damage will occur.
- Charge in a well-ventilated area. Keep vents unobstructed (maintain 1-inch clearance) and away from smoking or open flames.
2. Usage Precautions
- Compatible only with Milwaukee® M18™ tools. Not for use with models 1108, 3108, 5364, and 6516.
- Avoid operating in explosive atmospheres (gas, dust, flammable materials) or wet environments (rain, snow, damp locations).
- Use the side handle for HIGH OUTPUT/HIGH DEMAND batteries (6.0Ah+) to handle increased torque.
3. Battery Protection
- Do not crush, drop, pierce, or incinerate the battery. Damaged batteries may leak toxic chemicals.
- Prevent short circuits: Keep batteries away from metal objects (coins, keys, nails) that bridge positive/negative contacts.
- Do not disassemble the battery. Improper reassembly risks electric shock or fire.
4. Chemical Exposure
- Wear rubber/neoprene gloves if battery leaks. Rinse skin with soap and water (neutralize with vinegar); flush eyes with water for 20 minutes and seek medical attention immediately.
Disclaimer:
⚠️️Please mind potential fire risk and strictly follow the instruction manual for charging and storage. For disposal, please check your local authority's website for more information and dispose of the lithium-ion battery safely in accordance with the applicable legal requirements.
Product Specifications
| Parameter | Details |
|---|---|
| Nominal Capacity | 6800 mAh (as per product properties), 12000 mAh (as per product title/description) |
| Voltage | 18V DC |
| Rated Voltage | 18V |
| Battery Chemistry | Lithium-Ion (REDLITHIUM™) |
| Type | Li-Ion |
| Capacity Options | 2.4Ah (NiCd), 5.0Ah, 6.0Ah, 8.0Ah, 12.0Ah (FORGE™ HD) |
| Power Levels | PWR4 (8.0Ah), PWR5 (12.0Ah) |
| Dimensions (8.0Ah) | 134.6mm (L) × 86.4mm (W) × 88.9mm (H) |
| Weight (8.0Ah) | 1.1kg (2.43lbs) |
| Oil Resistance | Yes |
| Fuel Gauge | Integrated (sunlight-readable) |
| Model Number | 18650 |
| High-concerned chemical | None |
| Origin | Mainland China |
| Compatibility | Over 250 Milwaukee® M18™ tools |
Note on Capacity: The product is advertised with 12000mAh capacity, while some specifications list 6800mAh. Please refer to the product packaging for the exact capacity of your specific battery model.
Functional Description
1. Battery Indicators
| Indicator Status | Meaning |
|---|---|
| Steady Red | Charging in progress |
| Slow Blinking Green | Approaching full charge |
| Steady Green | Charging complete |
| Fast Blinking Red | Battery overheating/cooling (charging resumes at optimal temperature) |
| Slow Blinking Red | Charging pending (starts after first battery in charger is full) |
| Alternating Red/Green | Battery or charger malfunction |
2. Key Features
- COOL-CYCLE™ Active Cooling System: Rapid heat dissipation for reduced downtime (compatible with COOL-CYCLE chargers).
- REDLINK™ Intelligence: Monitors tool/battery/charger performance to prevent overload damage.
- No Memory Effect: Full capacity available with every charge (NiCd models).
- Durable Housing: Chemical-resistant shell protects against oils, greases, and solvents.
- Easy Release Latches: Quick battery changeouts.
Setup: Charging Instructions
To charge your Milwaukee M18 Lithium-Ion battery, follow these steps:
- Insert the battery pack into a compatible M18™ charger (e.g., M12-18SC, 48-59-1807) until it clicks into place.
- Observe the charger indicator guidelines (refer to the "Battery Indicators" table in the Functional Description section).
- Ensure the charging temperature is between 5°C to 40°C (41°F to 104°F).
- Full charge times vary by battery capacity and charger type:
- 8.0Ah FORGE™: 35 mins (80% with M18 DBSC Super Charger), 45 mins (full).
- 12.0Ah FORGE™ HD: 35 mins (80% with dual-port Super Charger), 45 mins (full).
- 5.0Ah XC: 60 mins (Super Charger).
Operating Instructions
The Milwaukee M18 18V Lithium-Ion Battery is designed for use with a wide range of Milwaukee M18 power tools. Ensure the battery is fully charged before use for optimal performance.
To install the battery, align it with the battery slot on your Milwaukee M18 tool and slide it in until it clicks securely into place. To remove, press the release latches and slide the battery out.
Always refer to your specific Milwaukee M18 tool's instruction manual for detailed operating procedures and safety guidelines.
Compatible Tools and Battery Codes
This battery is compatible with a wide range of Milwaukee 18 Volt M18 Cordless Power Tools and original battery codes, including but not limited to:
Compatible Original Battery Codes:
- 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1840, 48-11-1841, 48-11-1850, 48-11-1860, 48-11-1890, 48-11-1852, 48-59-181, 48-59-1850
- 4932352071, 4932430063, C18B, Li18, M18, M18B, M18B2, M18B4, M18B5, M18BX
Compatible Milwaukee 18 Volt M18 Cordless Power Tools (examples):
- 2646-22CT, 2643-21CT, 2641-21CT, 2646-21CT, 2646-20, 2642-21CT, 2641-20
- 2729-22, 2629-22, 2729-20, 2729-21, 2629-20
- 2706-22, 2705-20, 2705-22, 2704-20, 2787-22, 2702-20, 2701-20
- 2656-22CT, 2707-22, 2708-22, 2607-22, 2603-22CT, 2601-21, 2615-20, 2602-22CC, 2606-2002, 2602, 260-02
- And many more Milwaukee M18 series tools.
Maintenance & Storage
1. Routine Care
- Keep battery contacts clean and dry. Wipe with a dry cloth if contaminated.
2. Storage Conditions
- Store in a cool, dry place (temperature 20°F). Avoid direct sunlight or vehicle storage.
- Maintain 30-50% charge for long-term storage (6+ months).
3. Battery Longevity
- Avoid deep discharge cycles; recharge when power indicator shows low charge.
- Do not leave fully charged batteries in chargers for extended periods.
Troubleshooting
| Issue | Solution |
|---|---|
| Battery not charging | Check charger compatibility; verify clean contacts; ensure temperature is within 5-40°C. |
| Red/Green alternating flash | Inspect battery/charger for damage; contact Milwaukee® service. |
| Reduced runtime | Clean contacts; replace if warranty covers defects; avoid extreme temperatures. |
Warranty & Support
Warranty Information:
- Standard M18™ lithium-ion batteries: 3-year limited warranty.
- Specific models (e.g., 48-11-1828, 48-11-1830): 5-year/2000-charge prorated warranty (free replacement for first 2 years/1000 charges).
For full warranty details and additional resources, visit the official Milwaukee Tool website:
- Warranty details: milwaukeetool.com/warranty
- Additional manuals and resources: milwaukeetool.com/manuals
A PDF version of this user manual is also available for download: User Manual (PDF)
Milwaukee Tool 2026. All rights reserved.
User Tips
- Many users report that the battery works well upon arrival. Monitor its performance over time to assess long-term durability.
- The battery is generally easy to use and compatible with specified tools.