Milwaukee M12 REDLITHIUM XC4.0 Starter Kit | 12V Battery Pack & Charger

Take control of your cordless workflow with the Milwaukee M12 REDLITHIUM XC4.0 Starter Kit. This new starter set fits the entire M12 cordless system, so you can pair the pack with drills, impact drivers, or lights without changing tools. It’s designed to move you from task to task with confidence on the job site.

Power you can rely on wherever you work

At the heart of the kit is a 4.0 Ah REDLITHIUM battery. It’s designed to deliver longer run time, steadier performance, and rugged durability for demanding jobs on the job site. The XC4.0 pack can keep tools moving through longer tasks with less downtime. Expect up to 2x more runtime and around 20% more power when you push the tool to the limit, even in tough environments.

• Longer run time means fewer interruptions and more completed tasks per shift.
• Steady power helps maintain speed under load and in challenging conditions.

What’s inside the kit

The kit includes the 4.0 Ah REDLITHIUM battery and a charger, forming a compact bundle that travels easily in a tool bag or on a truck shelf.

• NEW kit compatible with all M12 tools and accessories.
• REDLITHIUM 4.0 provides up to 2x more recharges than standard Li-Ion packs.

Real-world benefits you might notice

• Faster top-ups between tasks, helping you stay productive on busy days.
• Best-in-class performance in extreme job-site conditions such as dust, vibration, and temperature swings.
• Compact, lightweight design reduces user fatigue during overhead or extended use.

How to maximize the kit

To get the most from the XC4.0 pack, store at moderate temperatures, avoid deep discharges, and rotate batteries to even out usage across tools.