M18 RADIUS Compact Site Light w/ ONE-KEY (Twist lock)
Battery answer
Every reviewed M18 pack powers SKU 2147-20 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 · Safety Technology · SKU 2147-20 · 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 | 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 2147-20, read 2026-07-31. Values are quoted in their units, not reformatted.
| Length | 11.25" |
|---|---|
| Weight | 12.05 lbs |
| Height | 11.25" |
| Width | 9.25" |
| Power Source | Cordless or Corded |
| Modes | High/ Medium/ Low |
| Lumens | 4400/ 2100/ 1000 or Customizable |
| Run Times | (XC5.0) 2 hr/ 4 hr/ 8 hr |
| Warranty | 5 Year Tool, LED Limited Lifetime Warranty |
| OneKey Compatible | Yes |
| Voltage | 18V |
What Milwaukee says about it
- 4,400 Lumens of TRUEVIEW High Definition Output
- High Impact Polycarbonate Lens
- Task, Area, and Overhead Lighting
- AC In and Out: String up to 10 together
- Protected AC Plugs
- Self-Centering Metal Hook for Easy Overhead Hanging
- 180° and 360° Electronic Light Control
- Low Battery Indicator
- Powered by M18 REDLITHIUM Battery or Extension Cord
- IP54 Rated: Water and Dust Resistant
- ONE-KEY Integrated Tool Tracking & Security
- ONE-KEY Technology allows you to set light remotely from up to 100ft
- TRUEVIEW High Definition Output provides neutral white color and produces an even beam pattern for clear visibility
- Part of the M18 System, Featuring 200+ Solutions
- LED Limited Lifetime Warranty: LEDs never need to be replaced
Manufacturer marketing copy, reproduced so you can judge it. We have not tested these claims.