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.
Where to Buy
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