The Milwaukee 48-11-1860 is Milwaukee’s M18 REDLITHIUM HIGH OUTPUT 6.0 Ah battery — the highest-capacity standard M18 battery. It is fully compatible with all 200+ tools in the Milwaukee M18 platform, including both standard M18 and M18 FUEL (brushless) tools. All M18 batteries are interchangeable across the entire M18 system.
48-11-1860 Specifications
| Specification | Value |
|---|---|
| Part Number | 48-11-1860 |
| Brand Name | M18 REDLITHIUM HIGH OUTPUT 6.0 |
| Voltage | 18V |
| Capacity | 6.0 Ah |
| Chemistry | Lithium-ion (REDLITHIUM) |
| Cells | 10 cells |
| Weight | 665 g / 1.47 lbs |
| Technology | REDLITHIUM (temperature management, cell protection) |
| Platform | Milwaukee M18 |
| Charge Time (M18 C) | Approx. 60 min |
Platform Compatibility
The 48-11-1860 is compatible with all tools in the Milwaukee M18 system — over 200 tools including M18 FUEL brushless tools, standard M18 tools, and M18 outdoor power equipment. It is not compatible with Milwaukee M12 tools or any Makita/DeWalt tools.
Compatible M18 Battery Models
| Battery Model | Capacity | Compatible |
|---|---|---|
| 48-11-1815 | 1.5 Ah (CP) | ✅ Yes |
| 48-11-1820 | 2.0 Ah (CP) | ✅ Yes |
| 48-11-1828 | 2.8 Ah (CP) | ✅ Yes |
| 48-11-1840 | 4.0 Ah (XC) | ✅ Yes |
| 48-11-1850 | 5.0 Ah (XC) | ✅ Yes |
| 48-11-1860 | 6.0 Ah (HO) | ✅ Yes (this battery) |
| 48-11-1862 | 6.0 Ah (FORGE) | ✅ Yes |
Cross-Platform Compatibility
The 48-11-1860 is not compatible with Milwaukee M12 tools. It is not cross-compatible with Makita 18V LXT or DeWalt 20V MAX tools — Milwaukee batteries use a proprietary connector unique to the M18 system.
REDLITHIUM vs REDLITHIUM FORGE
Milwaukee offers two high-capacity 6.0 Ah batteries: the 48-11-1860 (REDLITHIUM HIGH OUTPUT) and the 48-11-1862 (REDLITHIUM FORGE). The FORGE battery uses a superior lithium-iron-phosphate cell chemistry that delivers better performance in extreme temperatures and a longer overall lifespan. Both are fully compatible with all M18 tools. The FORGE is the upgrade choice; the 48-11-1860 is the proven, more widely stocked standard.
Replacement Battery Options
Genuine Milwaukee 48-11-1860 replacements are available from Milwaukee authorised dealers. Compatible third-party M18 6.0 Ah batteries are available from several brands — verify that the listing confirms compatibility with your specific M18 FUEL tools, as high-draw tools can be more sensitive to non-genuine battery performance.
Specifications reflect standard production variants. Always verify compatibility with your specific tool model before purchase. For the most current product information, visit the manufacturer’s official website.