Milwaukee M18 5.0Ah REDLITHIUM Battery - M18B5

Power up with Milwaukee's smart and durable M18 battery technology.

The Milwaukee M18 5.0Ah REDLITHIUM Battery (M18B5) delivers extended performance, longer run-times, and advanced protection. Compatible with the entire M18™ cordless system, this battery powers over 40 tools, making it a go-to choice for both trade professionals and DIYers.

With REDLINK PLUS™ intelligence, the M18B5 enables seamless communication between your battery and tools to protect against overloads and ensure peak performance. The XC5.0 pack delivers up to 4x longer charge and 20% more power than standard lithium-ion options, all while running cooler—even in extreme conditions below -18°C.

Designed with rugged construction for durability, this battery offers up to twice the recharges compared to other brands. It features an on-board fuel gauge, so you’ll always know how much power remains.

Covered by Milwaukee’s 3-year limited battery warranty (registration required), it’s a solid investment in reliable power.

Specs:

• Voltage: 18V

• Battery Type: REDLITHIUM™ XC5.0

• Fuel Gauge: Yes

• Part Number: M18B5

• Warranty: 3 Years (with registration)