M18 Cordless Caulk and Adhesive Gun
Battery answer
Every reviewed M18 pack powers SKU 2641-20 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 · Applicators · SKU 2641-20 · 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 | 4.9 lb |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2641-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 10.7 in |
|---|---|
| Length | 18.5 in |
| Width | 3.5 in |
| Branding | Badge: Not Applicable · Tool: Not Applicable |
| Colors | Black · Red |
| Material | Aluminum |
| Motor Type | Brushed |
| Number of Batteries Required | 1 |
| Number of Pieces Included | 1 |
| ONE-KEY Enabled | No |
| Pack Quantity | 1 |
| Warranty | 5 Year Limited Warranty |
What Milwaukee says about it
- 6-Setting max speed dial: Optimizes flow rate from 0-21 IPM (inches per minute)
- All-metal gears: Deliver industry-leading 950 lbs of dispensing force for the highest viscosity materials
- Anti-drip mechanism: Instantly stops material from dripping upon trigger release
- CFTConstant Flow Technology: Offers steady flow rate and even beads at all viscosity levels
- REDLITHIUM Battery Technology: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack life than any battery on the market
- Rotating quick-change collar: Accepts all Milwaukee quick-change configurations: 10-oz carriage, quart-size carriage, and 20-oz sausage barrels
- Variable-speed trigger: Allows for maximum flow-rate and bead-width control
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.