M18 FUEL 2 Gallon Compact Quiet Compressor
Battery answer
Every reviewed M18 pack powers SKU 2840-20 at full rated performance, with no battery-specific condition.
- Battery platform
- Milwaukee M18
- Packs required
- Not published by Milwaukee
- 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 · Nailers and Staplers · SKU 2840-20 · 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.”
Tool specifications and manufacturer claims
Basic tool facts
| Weight, bare tool | Not published for this exact SKU |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2840-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Tool Warranty | 3 Year Limited Warranty |
|---|---|
| Power Source | Cordless |
| Motor Type | Brushless |
| Product Application | Compressor |
| Length | 16.25 in |
| Weight | 31.25 lb |
| Height | 10.625 in |
| Width | 18.625 in |
| Sound Level | 68 dB(a) |
| Tank Capacity | 2 Gallons |
| Max PSI | 135 |
| SCFM | 1.2 @ 90 PSI |
| Pump Type | Oil Free |
| Regulator | Single Turn |
| Nailer Type | Compressor |
| Fuel | Yes |
What Milwaukee says about it
- Only 68dB(A)
- Easily carry design for less fatigue taking on and off the jobsite
- Single Turn Regulator
- POWERSTATE Brushless Motor delivers maximum power and long motor life
- M18 REDLITHIUM Battery Pack: Delivers more work per charge and more work over the life of the pack than competitors
- REDLINK PLUS intelligence: integrates full-circle communication between tool, battery and charger
- Up to 1,600 nails per charge
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.