M18 FUEL 8' Concrete Pencil Vibrator
Battery answer
Every reviewed M18 pack powers SKU 2911-20 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 · Concrete Vibrators · SKU 2911-20 · 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 8' Concrete Pencil Vibrator Kit (2911-21)
| Qty | Component | SKU |
|---|---|---|
| 1 | M18 FUEL 8' Concrete Pencil Vibrator | 2911-20 |
| 1 | M18 REDLITHIUM HIGH OUTPUT XC6.0 Battery Pack | 48-11-1865 |
| 1 | M18 & M12 Rapid Charger | 48-59-1808 |
Battery capacity in the box: 6.0 Ah across 1 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 2911-21 (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Tool specifications and manufacturer claims
Basic tool facts
| Weight, bare tool | 12 lb |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2911-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 6.5 in |
|---|---|
| Length | 105 in |
| Width | 3.25 in |
| Branding | Badge: FUEL · Tool: FUEL |
| Colors | Black · Red |
| FUEL | Yes |
| Number of Batteries Included | 0 |
| Number of Pieces Included | 1 |
| ONE-KEY Enabled | No |
| QUIK-LOK Attachment Capable | No |
| Variable Speed | Yes |
| Warranty | 5 Year Limited Warranty |
What Milwaukee says about it
- Generates 1.8 Peak HP
- Consolidate up to 20 cubic yards per charge with High Output 6.0 Battery Pack
- No extension cords: easier set up and transportation, eliminates trip hazards
- POWERSTATE Brushless Motor: delivers consistent 12,500 VPM for optimal consolidation
- REDLITHIUM Battery Pack: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack lifespan than any battery on the market.
- Square head design delivers greater amplitude for increased productivity compared to round heads
- Generates up to 3 times more power than comparable cordless pencil concrete vibrators
- Variable speed trigger for maximum control
- Compatible with all M18 REDLITHIUM battery packs
- Part of the M18 System, Featuring 200+ Cordless Solutions
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.