Quick Specs
What Battery Does the Milwaukee 2735-20 Use?
The Milwaukee 2735-20 M18 LED Work Light runs on the Milwaukee M18 18V battery platform. Any Milwaukee M18 REDLITHIUM battery will power this light, and even compact batteries provide hours of illumination.
About the Milwaukee 2735-20
The Milwaukee 2735-20 is a portable LED work light delivering up to 1,500 lumens with TRUEVIEW High Definition output for accurate colour rendering. It features three light modes (high, medium, low) and a durable rotating head that adjusts to direct light where needed. The compact, lightweight design includes a built-in hook and keyhole slots for versatile mounting options on jobsites.
Compatible Batteries
| Battery Model | Capacity | Weight | Best For |
|---|---|---|---|
| 48-11-1815 | 1.5Ah | 0.75 lb | A few hours on low mode |
| 48-11-1820 | 2.0Ah | 0.81 lb | Lightweight portable lighting |
| 48-11-1830 | 3.0Ah | 1.06 lb | Good balance of runtime and weight |
| 48-11-1840 | 4.0Ah | 1.25 lb | Extended lighting sessions |
| 48-11-1850 | 5.0Ah | 1.5 lb | Full shift of lighting |
| 48-11-1860 | 6.0Ah | 1.56 lb | Maximum runtime all-day lighting |
Recommended Cutting Discs
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Recommended Battery
For the 2735-20, the 48-11-1830 (3.0Ah) or 48-11-1840 (4.0Ah) are ideal choices. Work lights draw relatively low current, so a mid-range battery provides many hours of illumination without unnecessary weight. Use a 48-11-1850 (5.0Ah) if you need all-day lighting on a single charge.
Minimum Battery
The 48-11-1815 (1.5Ah) compact battery works perfectly with the 2735-20 for short tasks. On low mode, even the smallest M18 battery can provide a couple hours of light. This is a great way to use compact batteries that may not have enough capacity for power tools.
Battery Compatibility Notes
- All M18 REDLITHIUM batteries are backwards and forwards compatible with every M18 tool
- Work lights are low-demand — this is a great use for older or lower-capacity batteries from your collection
- M18 batteries are NOT compatible with M12 tools or older V18 tools
- Lower light modes significantly extend battery life — use medium or low when full brightness isn’t needed
Related Resources
- Milwaukee 48-11-1850 Battery Details
- Milwaukee 48-11-1860 Battery Details
- Milwaukee M18 Battery Compatibility Guide
- Battery Compatibility FAQ
Battery sizing, runtime & troubleshooting
Recommended pack: A light draws very little, so match the pack to runtime rather than power: a compact 2.0Ah is light to hang or stand; a 5.0Ah runs far longer between charges. There is no benefit to a HIGH OUTPUT pack here.
Compatibility caveats: Every genuine M18 pack fits and runs it; no high-output terminal is needed. Don’t tie up a big FUEL-grade pack on a light if a tool needs it.
If it won’t start or cuts out: If it won’t switch on it is almost always a flat or unseated pack rather than the light — reseat a charged battery until it clicks.
Runtime: Milwaukee quotes around 29 hours of runtime on a 5.0Ah pack; a compact pack delivers a fraction of that.
Versus the adjacent model: Unlike the FUEL tools sharing this battery, the work light is the place to use your smallest or oldest M18 pack and keep the big packs for the saws and grinders.
Where to Buy
Ready to add the Milwaukee 2735-20 to your toolkit? Check current prices and availability:
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