M18 FUEL SAWZALL Reciprocating Saw (Tool Only)
Battery answer
Every reviewed M18 pack powers SKU 2720-20 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 · Reciprocating Saws · SKU 2720-20 · 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 SAWZALL Reciprocating Saw Kit (2720-21)
| Qty | Component | SKU |
|---|---|---|
| 1 | M18 FUEL SAWZALL Reciprocating Saw (Tool Only) | 2720-20 |
| 1 | M18 & M12 Multi-Voltage Charger | 48-59-1812 |
| 1 | M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack | 48-11-1850 |
Battery capacity in the box: 5.0 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 2720-21 (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
M18 FUEL SAWZALL Reciprocating Saw Kit (2720-22)
| Qty | Component | SKU |
|---|---|---|
| 1 | M18 FUEL SAWZALL Reciprocating Saw (Tool Only) | 2720-20 |
| 2 | M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack | 48-11-1850 |
| 1 | M18 & M12 Multi-Voltage Charger | 48-59-1812 |
Battery capacity in the box: 10.0 Ah across 2 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 2720-22 (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
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 2720-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Tool Warranty | 5 Years |
|---|---|
| Power Source | Cordless |
| Length | 18.5" |
| Weight | 7.4 lbs |
| Warranty | 5 Year Limited Warranty |
| LED Light | Yes |
| Stroke Length | 1-1/8" |
| Keyless Adjustable Shoe | Yes |
| Keyless Blade Clamp | Yes |
| Blade Clamp | QUIK-LOK Universal |
| SPM | 0-3,000 |
| Fuel | Yes |
| Voltage | 18V |
What Milwaukee says about it
- Delivers faster than corded cutting speed and the durability of a corded saw.
- POWERSTATE Brushless Motor: Supplies constant power for faster cuts and reduced heat for extended life
- REDLINK PLUS Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger
- 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.