High-capacity twin battery solution for extended M18 runtime
The Milwaukee M18B5 5.0 Ah REDLITHIUM twin pack is engineered to deliver extended runtime and consistent power output across the Milwaukee M18 cordless platform. Designed for professional applications, these batteries support high-demand tools including drilling, cutting, grinding, and fastening equipment.
REDLITHIUM protection combined with REDLINK digital overload protection safeguards both battery and tool from demanding jobsite conditions. Individual cell monitoring optimises charge and discharge cycles, extending service life. The durable metal frame construction with shock-responsive separators reduces failure risk from vibration and impact. Integrated water protection routes moisture away from internal electronics. Each battery operates in temperatures down to −20 °C without compromising runtime and features an onboard fuel gauge for real-time charge monitoring.
Specifications:
- Battery platform: Milwaukee M18
- Battery chemistry: Lithium-ion REDLITHIUM
- Battery capacity (each): 5.0 Ah
- Nominal voltage: 18 V
- Weight (each): 0.7 kg
- Charge time (M12-18 AC charger): 100 minutes
- Charge time (M12-18 C charger): 100 minutes
- Charge time (M12-18 FC charger): 59 minutes
- Charge time (M1418C6 charger): 100 minutes
- Operating temperature capability: down to −20 °C
- Fuel gauge: Integrated
- Quantity supplied: 2 batteries
Package Contents:
- 2 × Milwaukee M18B5 5.0 Ah REDLITHIUM battery packs
Note: Batteries only. Charger not included. Compatible with all Milwaukee M18 REDLITHIUM cordless tools.







