Description

Key Features

Charger and Power Supply

This Milwaukee 2847-20 M18 TOP-OFF Charger & Power Supply does two jobs in one compact unit. It charges M18 batteries and powers USB-C devices from the same platform, which means less gear to pack and fewer dead devices on the job.

Dual USB-C Output

With one 100W USB-C PD port and one 15W USB-C port, it can handle bigger devices like laptops while still topping off smaller electronics. That makes it useful for tablets, phones, headlamps, and field laptops without carrying separate charging bricks.

Compact M18 Fit

It fits all Milwaukee M18 batteries and keeps the package small at just 3.71 inches long and 0.5 lb. That matters when you want a charging solution that rides in a tool bag instead of living on a bench.

Overview

The Milwaukee 2847-20 M18 TOP-OFF Charger & Power Supply is a compact battery charger and USB-C power supply built for users already invested in the Milwaukee M18 platform. This is a battery charger and portable USB-C power supply designed for charging M18 batteries and powering small electronics on the job or on the go. Model Number: 2847-20. If you carry M18 packs every day and also rely on a phone, tablet, headlamp, or laptop, this unit cuts down on extra chargers and keeps your setup simpler.

What makes this one matter is that it is not just an M18 charger. Milwaukee built in advanced USB-C PD charging with a 100W USB-C PD port and a second 15W USB-C port, so the same unit can recharge an M18 battery and serve as a practical power source for devices that actually matter on site. That is a real benefit for punch lists, service calls, inspections, estimating, and any job where your phone or tablet is part of the workflow.

Size is a big part of the appeal here. Milwaukee calls it the most compact M18 battery charger, up to 65% smaller than traditional kitted chargers, and the listed dimensions back that up: 3.71 inches long, 3.04 inches wide, and 1.9 inches high. At 0.5 lb, it is easy to leave in a bag, glove box, or gang box without thinking twice. For contractors who hate carrying dedicated chargers that take up too much room, that smaller footprint is the whole point.

On the performance side, the unit delivers 115W continuous power and is designed to work with all Milwaukee M18 batteries. Milwaukee specifically positions it for charging headlamps, cellphones, tablets, and computers, so this is a good fit for crews and trades that depend on connected devices throughout the day. The included 100W USB-C cable and 65W USB-C wall adapter mean you can use it right out of the box instead of chasing down compatible accessories.

Milwaukee also gives useful real-world examples for what this charger and power supply can do. With an M18 XC 5.0 Battery, it can charge a phone up to five times, and that same battery can be recharged in about 105 minutes using the included 65W wall charger. That gives buyers a better sense of where this fits: not as a full power station replacement, but as a compact platform-based charging solution for day-to-day electronics and battery maintenance.

From a jobsite practicality standpoint, this tool is straightforward and useful. It has overload protection, clear battery charge indication, and a layout that keeps it simple to use without extra setup. If you already own M18 packs, this is one of those accessories that earns its place quickly because it helps the batteries you already own do more than just run tools.

The best buyer for the Milwaukee 2847-20 M18 TOP-OFF Charger & Power Supply is someone who is already on the Milwaukee M18 battery system and wants a compact charging solution for both batteries and electronics. Electricians, service techs, general contractors, HVAC crews, remodelers, and serious DIY users will get the most value here. If you need to keep laptops and mobile devices alive between outlets, but you do not want to carry a bulky inverter or separate charger, this is the cleaner answer.

Keep Devices Running on Site

This is where the Milwaukee 2847-20 M18 TOP-OFF Charger & Power Supply makes the most sense. It lets an M18 battery pull double duty by keeping your devices charged while you are working, not just your cordless tools.

• Designed for phones, tablets, headlamps, and computers
• Includes a 100W USB-C cable and 65W USB-C wall adapter

Compact Enough to Carry Daily

Some chargers are fine on a shelf and annoying everywhere else. This one is built to travel with the rest of your M18 gear, so it is easier to justify keeping it in the bag every day.

• Measures 3.71 in L x 3.04 in W x 1.9 in H
• Weighs just 0.5 lb

One M18 Battery, More Utility

If you already have M18 packs in rotation, this adds a practical layer of utility without changing battery platforms. It is a smart fit for crews who already rely on Milwaukee cordless tools and want that same battery system to support electronics.

• Fits all Milwaukee M18 batteries
• Delivers 115W continuous power with dual USB-C ports

What’s in the Box

• (1) M18 TOP-OFF Charger & Power Supply
• (1) 65W USB-C Wall Adapter
• (1) 100W USB-C Cable

At a Glance

115W

Continuous Power

100W

USB-C PD Port

15W

Second USB-C Port

0.5 lb

Tool Weight

Key Specifications

Battery Platform	M18
Length	3.71 in
Width	3.04 in
Height	1.9 in
Weight	0.5 lb
USB-C PD Output	100W
Second USB-C Output	15W
Continuous Power	115W

Compatibility

Battery Platform

Compatible with all Milwaukee M18 batteries.

Device Charging

USB-C ports support charging for headlamps, cellphones, tablets, and computers.

Included Accessories

Includes a 65W USB-C wall adapter and 100W USB-C cable for charging the unit and connected devices.

Built For

ElectricalHVACGeneral ContractingRemodelingService CallsJobsite Device ChargingMobile EstimatingDIY / Hobbyist

Pro Tip

If you are using this for laptops or tablets, pair it with a higher-capacity M18 pack like an XC battery instead of a compact pack. You will get more practical runtime for electronics, and Milwaukee’s own example shows an M18 XC 5.0 can recharge a phone up to five times.

Warranty & Support

5 Year Limited Warranty.

Tool Nut’s Take

Tool Nut’s Take

Milwaukee 2847-20 M18 TOP-OFF Charger & Power Supply Is the M18 Accessory You Actually Keep With You

This is a smart buy for M18 users who want one compact unit that can charge batteries and keep the electronics they work from alive during the day.

• Who it’s for: Milwaukee M18 users, service techs, contractors, and serious DIYers who depend on phones, tablets, lights, and laptops while working.
• Why it stands out: The combination of all-M18 battery compatibility, 100W USB-C PD output, and genuinely compact size makes it more useful than a standard charger.
• Worth knowing: This is not trying to be a big inverter or full power station. It is a compact, practical charger and USB-C power solution built around the M18 platform, and that focused job is exactly why it makes sense.

Common Questions

• Does it work with all M18 batteries? Yes. Milwaukee lists the 2847-20 as fitting all M18 batteries.
• What devices can it charge? Milwaukee states it is ideal for headlamps, cellphones, tablets, and computers through its USB-C ports.
• How much power does the USB-C PD port provide? The primary USB-C PD port provides up to 100W, and the second USB-C port provides 15W.
• How long does it take to recharge an M18 XC 5.0 battery? Milwaukee states recharge time is approximately 105 minutes when using the included 65W wall charger.