M18 RADIUS Compact Site Light
Battery answer
Every reviewed M18 pack powers SKU 2145-20 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 · Task Lighting · SKU 2145-20 · 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 | 12.3 lb |
|---|
Specification sources (1)
- Milwaukee Tool — manufacturer page, retrieved 2026-07-31
Full specifications
As published by Milwaukee for SKU 2145-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Height | 11.2 in |
|---|---|
| Length | 10.15 in |
| Width | 11.55 in |
| Colors | Black · Red |
| Material | Polycarbonate |
| Number of Pieces Included | 2 |
| ONE-KEY Enabled | No |
| PACKOUT Compatible | No |
| Runtime and Output by Mode | High-(XC5.0Ah) 2hr, 4400 Lumens / Medium -4hr, 2100 Lumens / Low- 8hr, 1000 Lumens |
| Warranty | 5 Year Tool Warranty, LED Limited Lifetime Warranty |
What Milwaukee says about it
- IP54 Rated: Water and Dust Resistant
- 3 Brightness Modes for Optimal Run-Time and Output
- AC in and out: string up to 10 together
- Self-centering hang hook
- High Impact Polycarbonate Lens
- Low Battery Indicator
- Powered by M18 REDLITHIUM Battery or Extension Cord
- Self-Centering Metal Hook for Easy Overhead Hanging
- 180° and 360° Electronic Light Control
- LED Limited Lifetime Warranty: LEDs never need to be replaced
- Part of the M18 System, featuring 200+ solutions
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.