M18 FUEL 1/4" Lockbolt Tool w/ ONE-KEY
Battery answer
Every reviewed M18 pack powers SKU 2661-20 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 · Rivet Tools · SKU 2661-20 · 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 | 4.68 lb |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2661-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 8.77 in |
|---|---|
| Length | 12.1 in |
| Width | 2.5 in |
| Branding | Badge: FUEL · Tool: FUEL |
| Color | Red |
| FUEL | Yes |
| Material | Metal |
| Motor Type | POWERSTATE Brushless |
| Number of Batteries Included | 0 |
| Number of Batteries Required | 1 |
| Number of Pieces Included | 1 |
| ONE-KEY Enabled | Yes |
| Warranty | 3 Year Limited Warranty |
| Weight w/Batteries | 6.3 lb |
What Milwaukee says about it
- Eliminates compressors and hoses providing lower cost of ownership, greater productivity, more portability and more safety
- Installs HUCK Bobtail, Magna Grip and C6L Lockbolt Fasteners
- Installs up to 1,200 1/4" AL Magna-Grip Lockbolt Fasteners in one REDLITHIUM M18 XC5.0AH Battery Charge
- Compatible with HUCK Lockbolt Tip Models 99-7932, 99-7932CC, 99-2555, 99-3417, 99-3201, 99-3204, and 99-3464.
- POWERSTATE Brushless Motor delivers 4,500 lbs. (20kN) of pulling force for high strength blind rivets in all materials
- Installs 3/16" (4.8mm), 7/32" (6.0mm), 1/4" (6.4mm) and 9/32" (7.0mm) aluminum, steel, and stainless steel Blind Rivets with purchase of M18 1/4" Lockbolt to Blind Rivet Tool 49-16-2661R
- Up to 35% faster than cordless competitors
- Premium rubber overmolds withstand corrosive materials and provides increased comfort when in use
- Installs HUCK(TM) Hucktainer Fasteners with purchase of Hucktainer Fastener Adaptor 49-16-2661HT
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.