Milwaukee 2656-20 M18 18V 1/4 Inch Lithium Ion Hex Impact Driver with

The Milwaukee 2656-20 M18 1/4-inch hex impact driver is a cordless driving tool designed for fastening tasks that demand controlled power. Its compact footprint makes it a practical option for tradespeople and DIYers who need to drive screws or bolts into tough materials without relying on bulky equipment.

Speed and impact force are managed directly through the variable-speed trigger, which adjusts power output on demand up to 3,450 impacts per minute. Beneath the quick-connect hex chuck, a built-in LED lighting array shines directly on the work area, helping you line up bits in dimly lit spaces. The handle features a textured rubber grip, giving you steady control even if your hands or workspace are wet or slippery.

Operational reliability comes from built-in Redlink technology, which creates an electronic communication link between the tool and attached M18 lithium-ion battery. This monitoring helps reduce the risk of overheating when pushing through continuous fastening jobs. The tool accepts a wide range of standard M18 batteries, including models 48-11-1860, 48-11-1850, 48-11-1840, 48-11-1828, 48-11-1820, and 48-11-1815.

As a bare tool, it requires an existing or separate M18 battery to operate, and the listing does not include a battery, charger, or carrying case. It is also limited to 1/4-inch hex shank accessories, so standard round drill bits will not fit without an adapter.

Verdict: This cordless impact driver is a smart addition for anyone invested in the Milwaukee M18 platform who needs a fast, heat-managed fastening tool. It is particularly well suited for users working in dim, tight, or slippery conditions.

A great fit if you:

• Already own compatible Milwaukee M18 lithium-ion batteries and chargers.
• Need high impact speed up to 3,450 IPM for driving fasteners.
• Work frequently in poorly lit areas that require dedicated tool lighting.
• Need a secure rubber grip for handling tools in slippery conditions.

Consider something else if you:

• Do not already own compatible M18 batteries and need a complete starter kit.
• Need to use smooth, non-hex drill bits directly in the chuck.

Which batteries work with this impact driver?
It works with Milwaukee M18 lithium-ion batteries, including models 48-11-1860, 48-11-1850, 48-11-1840, 48-11-1828, 48-11-1820, and 48-11-1815.

What is the maximum impact rate of this tool?
The motor can deliver up to 3,450 impacts per minute depending on how much pressure you apply to the variable-speed trigger.

How does the tool prevent overheating?
It features Redlink technology, which allows the internal electronics to communicate directly with the M18 battery to manage heat and reduce overheating risks.