Quick Specs
What Battery Does the Milwaukee 2767-20 Use?
The Milwaukee 2767-20 M18 FUEL High Torque 1/2″ Impact Wrench runs on the Milwaukee M18 18V battery platform. Any Milwaukee M18 REDLITHIUM battery will power this tool, though high-output batteries are strongly recommended for this high-demand application.
About the Milwaukee 2767-20
The Milwaukee 2767-20 is a powerhouse impact wrench delivering up to 1,000 ft-lbs of fastening torque and 1,400 ft-lbs of nut-busting torque. Featuring a POWERSTATE brushless motor and four-mode DRIVE CONTROL with bolt removal mode, it’s designed for automotive, heavy equipment, and construction fastening. The friction ring anvil provides easy socket changes, and at 8.39 inches long, it’s compact enough to reach tight spaces under vehicles.
Compatible Batteries
| Battery Model | Capacity | Weight | Best For |
|---|---|---|---|
| 48-11-1815 | 1.5Ah | 0.75 lb | Not recommended for this tool |
| 48-11-1820 | 2.0Ah | 0.81 lb | Emergency use only |
| 48-11-1830 | 3.0Ah | 1.06 lb | Light fastening tasks |
| 48-11-1840 | 4.0Ah | 1.25 lb | Moderate use |
| 48-11-1850 | 5.0Ah | 1.5 lb | Recommended for regular use |
| 48-11-1860 | 6.0Ah | 1.56 lb | Best for heavy-duty lug nut removal |
Recommended Batteries
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Recommended Battery
For the 2767-20, the 48-11-1860 (6.0Ah) High Output battery is the top choice. This impact wrench draws significant current during nut-busting operations, and the high-output cells deliver sustained power without voltage sag. For all-day automotive work — removing lug nuts, suspension bolts, and axle nuts — the 6.0Ah pack ensures consistent performance.
Minimum Battery
The 48-11-1830 (3.0Ah) is the practical minimum for the 2767-20. While smaller batteries will physically fit and run the tool, the high torque demands will drain compact packs very quickly and may not deliver full nut-busting torque. For occasional light fastening only, a 3.0Ah will suffice, but step up to 5.0Ah or higher for regular use.
Battery Compatibility Notes
- All M18 REDLITHIUM batteries are compatible, but High Output packs are strongly recommended for this tool
- High Output batteries deliver more sustained current, which directly impacts nut-busting performance
- M18 batteries are NOT compatible with M12 tools or older V18 tools
- Keep a spare charged battery on hand — impact wrenches consume battery faster than most M18 tools
Related Resources
- Milwaukee 48-11-1850 Battery Details
- Milwaukee 48-11-1860 Battery Details
- Milwaukee M18 Battery Compatibility Guide
- Battery Compatibility FAQ
Battery sizing, runtime & troubleshooting
Recommended pack: Sustained heavy fastening draws hard. A 5.0Ah XC or HIGH OUTPUT pack delivers consistent torque and many more fasteners per charge than a compact pack.
Compatibility caveats: All M18 packs fit; capacity and output are the variable.
If it won’t start or cuts out: Cutting out on a stubborn nut means the pack is too small or too low — move to a 5.0Ah+.
Runtime: No official per-charge figure is published.
Versus the adjacent model: Far heavier draw than the 2853-20 impact driver on the same battery — keep the driver on compact packs and feed this wrench the big ones.
Where to Buy
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