M18 Brushless 7-1/4" Circular Saw
Battery answer
Every reviewed M18 pack powers SKU 2631-20 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 · Circular Saws · SKU 2631-20 · 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 | 7.2 lb |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2631-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 11 in |
|---|---|
| Length | 13 in |
| Width | 7 in |
| Blade Diameter | 7.25 in |
| Colors | Black · Red |
| FUEL | No |
| Handle Type | Top Handle |
| Material | Metal |
| Motor Type | Brushless |
| Number of Batteries Required | 1 |
| Number of Pieces Included | 1 |
| ONE-KEY Enabled | No |
| Tool Branding | Brushless (Not FUEL) |
| Warranty | 5 Year Limited Warranty |
| Weight w/Batteries | 9 lb |
What Milwaukee says about it
- 2-1/2" Cut Depth
- Electric brake to stop blade after trigger is released
- Integrated dust port on guard
- Integrated rafter hook for easy storage
- LED light for increased accuracy and visibility
- Magnesium Upper and Lower Guards
- Milwaukee Brushless Motor: Optimized for efficiency, this motor delivers over 30% more run-time and longer life than brushed motors. Delivers 5,000 RPM for smooth, powerful cutting
- REDLINK Intelligence: Advanced overload protection defends against abusive applications and monitors the temperature to prevent damage and ensure maximum tool & battery life.
- REDLITHIUM XC5.0 Battery Pack: Provides superior pack construction, more work per charge and more work over the life of the pack than competitive batteries
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.