48-11-2420 / 48-59-2401

Pros & Cons

At a Glance

Overview

The Milwaukee M12 REDLITHIUM 2.0Ah two-battery-and-charger kit is a straightforward way to get started on the M12 platform, or to restock if your existing packs are aging out. At $59.89 for two genuine Milwaukee batteries plus a charger, it's priced as a starter bundle, not a high-capacity upgrade — these are compact 2.0Ah cells built to keep subcompact M12 tools light, not to maximize runtime.

We haven't run this kit through any testing. This is a fit-and-value breakdown: what M12 means, what this kit covers, and where its limits are.

Who it's for

This kit fits two situations well: someone buying their first M12 tool and needing a battery-and-charger set from scratch, or an existing M12 owner who wants a second pack for hot-swapping. Because it's a 2-battery kit at 2.0Ah each, it's better suited to light-duty M12 tools — drill/drivers, ratchets, inspection tools — than to anything that draws hard for long stretches.

Compatibility

Any M12 battery fits any M12 tool — Milwaukee has kept that platform consistent. This is strictly a 12V MAX pack, though, and will not power M18 tools; M12 and M18 are different voltage classes with different footprints. If you also run M18 tools, you'd need a separate M18 pack or a dual-voltage charger like Milwaukee's M12/M18 rapid charger — this kit's included charger is M12-specific.

Why genuine matters here

These are genuine 48-11-2420 M12 CP2.0 batteries with a model-specific 2-year battery warranty. The included 48-59-2401 charger is separately documented by Milwaukee for M12 batteries.

Buying notes

2.0Ah is on the lower end for runtime if you're using M12 tools all day; if you find yourself swapping packs constantly, a higher-capacity M12 battery would serve you better, sold separately. There's no fuel gauge on these compact cells, so you won't get a charge-level readout at a glance.

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