Milwaukee ROLL-ON 7200W/3600W 2.5kWh Battery Power Supply

The Milwaukee ROLL-ON is a heavy-duty, wheeled power supply built to replace a gas generator on demanding jobsites. It carries its own non-removable 2.5kWh REDLITHIUM battery, so there's no fuel to store, no engine to maintain, and no separate battery packs to swap — just instant, on-demand AC power.

Instant setup, no gas hassles

With an integrated battery built into the unit, the ROLL-ON eliminates the fuel runs, spill risk, and engine maintenance that come with a gas generator, while still delivering 3600W of continuous power and a 7200W peak for demanding tools.

Built to roll around the jobsite

9.5-inch all-terrain wheels and a steel frame let one person move the ROLL-ON across uneven ground, and an IP54 weather rating means it can handle dust and light rain on an active job site without missing a beat.

Pass-through charging keeps it ready

The ROLL-ON can charge while in use, so crews can keep it plugged into shore power or a charging source between shifts and always have a full charge ready for the next job. It's also compatible with Milwaukee's PACKOUT storage system for organized jobsite transport.

Key features

• 3600W continuous / 7200W peak output
• Integrated, non-removable 2.5kWh REDLITHIUM battery
• Pure sine wave inverter for clean, stable power
• Pass-through charging capability
• IP54 weather-resistant rating
• 9.5" all-terrain wheels for jobsite mobility
• ONE-KEY compatible for tracking and fleet management

Specifications

Brand	Milwaukee
Model	3300R
Continuous output	3600W
Peak output	7200W
Battery capacity	2.5kWh, integrated REDLITHIUM
Voltage	120V, AC & DC
Cord length	6 ft
Weight	104 lbs
Dimensions (L x W x H)	28.85" x 23.15" x 19.95"
Weather rating	IP54
Certification	cULus Listed
Warranty	3 years

Frequently asked questions

Can I charge it while it's powering tools?

Yes — the ROLL-ON supports pass-through charging, so it can stay connected to a power source while supplying AC power to your tools.

Is the battery removable?

No, the 2.5kWh REDLITHIUM battery is integrated into the unit — there are no separate battery packs to buy, swap, or lose.

Can it be used outdoors in the rain?

It carries an IP54 weather-resistant rating, suitable for dust and light rain exposure on an active jobsite; it is not designed for submersion or heavy sustained rain.

Does the cover come with it?

No — the protective cover (model 48-11-3300) is sold separately.

What is in the box

Milwaukee ROLL-ON 7200W/3600W 2.5kWh power supply (model 3300R).