MILWAUKEE 18V RedLithium-Ion 4.0Ah Battery M18B4 

• Maximum Runtime & Power: Delivers superior performance for longer work per charge.

• Durable Construction: Runs cooler and performs in extreme cold climates as low as -18°C (0°F).

• REDLINK PLUS Intelligence: Advanced communication between the battery and tool for enhanced performance and protection.

• Overload Protection: Safeguards battery from heavy-duty tool use.

• Temperature Management System: Helps maintain optimal battery temperature to extend battery life.

• Individual Cell Monitoring: Optimizes charge and discharge for maximum battery life.

• Discharge Protection: Prevents damage from over-discharging.

• Compatibility: Powers more than 150 Milwaukee 18V cordless power tools.

• Condition: As photographed, showing wear consistent with use.