Built for professionals who demand more from their tools, the Milwaukee M18 4.0Ah Battery M18 B4 delivers up to 2X more runtime, 20% more power, and 2X more battery life than standard lithium-ion alternatives. Designed with REDLITHIUM battery technology and REDLINK digital overload protection, it ensures performance even under tough conditions.The M18 B4 battery resists extreme temperatures, vibrations, and dropsmaking it a reliable energy source for any job site. With individual cell monitoring, a durable metal frame, and water protection routing, this battery delivers unmatched endurance and efficiency.

Key Features:

• Extended Performance: Up to 2X more runtime and 20% more power*
• Longer Battery Life: Up to 2X more charge cycles
• Advanced REDLINK Protection: Prevents damage from overload
• Durable Metal Frame: Built to resist shock and drops
• Water Protection: Routes moisture away from sensitive components
• Cold-Weather Ready: Operates in temperatures as low as -20C
• Fuel Gauge: Monitor battery level for runtime efficiency
• Performance may vary based on tool and application.

Specifications:

• Model: M18 B4
• Article Number: 4932430063
• Battery Pack Capacity: 4.0Ah
• Battery Type: Li-ion
• System: M18
• Voltage: 18V
• Weight: 0.7 kg
• Supplied In: No kitbox or bag supplied
• Charge Times: M12-18 AC / C / M1418C6: 80 min & M12-18 FC / SC / M18 DFC: 52 min

The Milwaukee M18 4.0Ah Battery (M18 B4) is engineered to provide up to twice the runtime and 20% more power compared to standard lithium-ion batteries. It features REDLINK Intelligence for optimized performance and overload protection, individual cell monitoring for maximum battery life, and a durable construction with shock-responsive separators. This battery operates efficiently in extreme temperatures down to -20C and is compatible with the entire range of Milwaukee M18 cordless tools.