M18 FUEL 1/2" Hammer Drill/Driver - Cordless Power Tool
Battery answer
Every reviewed M18 pack powers SKU 2904-20 at full rated performance, with no battery-specific condition.
- Battery platform
- Milwaukee M18
- Packs required
- 1 pack
- 9 work without conditions.
Battery requirement sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Compare the reviewed packs See tool specifications and sources
Milwaukee · Hammer Drills · SKU 2904-20 · Milwaukee source
Compare the reviewed M18 packs
| Battery | Capacity | Energy | Power level | Answer |
|---|---|---|---|---|
| 48-11-1813 | 12 Ah | 216 Wh | PWR5 | Works |
| 48-11-1820 | 2 Ah | 36 Wh | not published | Works |
| 48-11-1828 | 3 Ah | 54 Wh | not published | Works |
| 48-11-1840 | 4 Ah | 72 Wh | not published | Works |
| 48-11-1850 | 5 Ah | 90 Wh | PWR2 | Works |
| 48-11-1850R | 5 Ah | 90 Wh | not published | Works |
| 48-11-1861 | 6 Ah | 108 Wh | PWR4 | Works |
| 48-11-1865 | 6 Ah | 108 Wh | PWR3 | Works |
| 48-11-1881 | 8 Ah | 144 Wh | PWR4 | Works |
Energy is capacity × nominal voltage — our arithmetic on Milwaukee’s figures, not a number they publish. It is the only honest way to compare packs across capacities. Power level is Milwaukee’s own PWR tier where they publish one.
Compatibility sources (1)
- Milwaukee Tool — manufacturer support, retrieved 2026-07-30“All M18 Batteries are compatible with M18 tools & chargers.”
Kit configurations
Ways Milwaukee sells this exact tool in a box. Contents are decomposed to manufacturer SKUs; non-SKU’d accessories — side handles, belt clips, cases — are omitted because they carry no compatibility meaning.
M18 FUEL 1/2" Hammer Drill/Driver Kit (2904-22)
| Qty | Component | SKU |
|---|---|---|
| 1 | M18 FUEL 1/2" Hammer Drill/Driver - Cordless Power Tool | 2904-20 |
| 2 | M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack | 48-11-1850 |
| 1 | M18 & M12 Multi-Voltage Charger | 48-59-1812 |
Battery capacity in the box: 10.0 Ah across 2 pack(s). This is the directly comparable capacity when weighing the kit against the bare tool plus packs.
Contents provenance: manufacturer claim; review completed 2026-07-31 by jon.
Contents sources for 2904-22 (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Tool specifications and manufacturer claims
Basic tool facts
| Brushless | Yes |
|---|---|
| Weight, bare tool | 3.3 lb |
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2904-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 8.23 in |
|---|---|
| Length | 6.95 in |
| Width | 2.38 in |
| Branding | Badge: FUEL · Tool: FUEL |
| Brushless Motor | Yes |
| Chuck Size | 1/2 in |
| Chuck Type | All Metal Ratcheting |
| Colors | Black · Red |
| FUEL | Yes |
| Hammer Function | Yes |
| Handle Type | Standard |
| Charger | No |
| Maximum Torque | 1400 in-lbs |
| Motor Type | POWERSTATE Brushless |
| Number of Batteries Included | 2 |
| Number of Batteries Required | 1 |
| Number of Clutch Settings | 16 |
| Number of Pieces Included | 1 |
| Number of Speed Settings | 2 |
| ONE-KEY Enabled | No |
| Overload Protection | Yes |
| RPM Range | 0-2,100 RPM |
| Switch Type | Trigger |
| Variable Speed | Yes |
| Warranty | 5 Year Limited Warranty |
| Weight w/Batteries | 4.9 lb |
What Milwaukee says about it
- Most Powerful Hammer Drill - Delivers 1,400 in-lbs of torque for the toughest applications.
- Compact 6.9" Length - Provides superior access in tight spaces.
- AutoStop Control Mode – Protects from over-rotation during bind-ups with industry-best reaction time.
- Dedicated AutoStop Indicator Light - Alerts users of protection events for enhanced safety.
- POWERSTATE Brushless Motor - Powers the widest range of drilling and driving applications under load.
- Fastest Drilling & Driving - Maintains speed and productivity in demanding materials.
- All-Metal 1/2" Ratcheting Chuck - Features carbide teeth for maximum durability, grip, and bit retention.
- Mechanical Clutch – Provides consistent fastening control across a wide range of applications.
- REDLINK PLUS Intelligence - Optimizes performance and protects against overload and overheating.
- M18 REDLITHIUM XC5.0 Battery – Delivers unmatched performance and the most runtime in class.
- Hammer Drill Mode - Enables fast drilling in brick, block, and concrete.
- All-Metal Belt Clip - Ensures easy portability.
- LED Work Light - Increases visibility and accuracy in low-light conditions.
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.