The Milwaukee 48-59-1204 M12 Four Bay Sequential Charger is built for users running multiple M12 batteries and wanting a cleaner, more efficient charging setup. This is a battery charger designed for charging and managing Milwaukee M12 battery packs. Model Number: 48-59-1204. If you are rotating batteries through several cordless tools, this charger cuts down the constant shuffle of moving one pack at a time on and off a single-bay charger.

What matters here is the layout and charging logic. The charger accepts up to four M12 battery packs and charges them sequentially, one battery at a time. In practical use, that means the battery currently being charged gets full attention from the charger rather than sharing charging output with the others. For crews and serious DIY users, that makes it easier to keep a clear battery rotation going through drills, impact drivers, inspection tools, lights, and other M12 cordless tools.

Milwaukee also built this charger around jobsite practicality instead of just raw charging speed claims. The housing is slim enough for a bench top, storage shelf, or service van setup, and it includes integrated hang holes for vertical key-hole mounting. If your charging area is tight, that wall-mount option matters. It gets the charger up off the work surface and keeps battery packs organized instead of piled around loose.

The onboard charge indicator gives you a quick read on charging status without having to pull a pack off the charger and guess. Milwaukee also includes a skip button, which is one of those small features that actually makes the tool more useful day to day. If you need one specific battery next, you can move charging priority without unloading the whole charger. That is a real time-saver when one tool is critical and the rest can wait.

On the electronics side, this charger uses Milwaukee REDLINK Intelligence to communicate directly with the battery pack. That system monitors cell voltage, temperature, and charge status while charging. The reason that matters is simple: better battery monitoring helps protect pack health and supports more consistent charging performance over time. If you have invested in M12 REDLITHIUM batteries, this is the kind of charger setup that helps you get more usable life out of that investment.

As a platform tool, the charger is specifically designed for the Milwaukee M12 battery system and charges all M12 batteries. It runs from a standard 120V electrical outlet and delivers up to 3 amps max output. This is not a dual-platform charger and it is not meant for M18 packs. If your setup is primarily M12, though, that single-platform focus is exactly the point.

Who should buy it? This charger makes the most sense for technicians, electricians, plumbers, HVAC crews, remodelers, and anyone else who runs several M12 batteries in a normal workday. It is also a smart shop charger if you keep spare packs ready for smaller cordless tools. If you only own one battery and one tool, a single-bay charger is enough. If you are already cycling multiple M12 packs, the Milwaukee 48-59-1204 M12 Four Bay Sequential Charger is the cleaner, more efficient setup.

Milwaukee 48-59-1204 M12 Four Bay Sequential Charger for crews tired of charger chaos

This is the kind of charger that makes more sense the more M12 tools you own.

• Who it's for: Anyone running multiple Milwaukee M12 tools and rotating several battery packs through the day.
• Why it stands out: Four bays, wall-mount capability, REDLINK battery communication, and a skip button that lets you control charging priority.
• Worth knowing: It is a standard sequential charger, not a rapid charger, so this one is about organization and battery management more than chasing the fastest charge times.

• Does this charger charge multiple batteries at the same time? No. It is a sequential charger, so it charges one battery at a time.
• What batteries does it work with? It is designed for Milwaukee M12 batteries and charges all M12 battery packs.
• Can it be mounted on a wall? Yes. It has integrated hang holes for vertical key-hole mounting.
• Is this a rapid charger? No. Milwaukee classifies it as a standard charger.