12V - 6.0 Ah REDLITHIUM™ battery.
The REDLITHIUM™ battery provides up to 3x longer run time, up to 20% more power, up to 2x more recharges than other lithium technologies or previous MILWAUKEE® battery technology. REDLINK™ digital overload protection. Individual cell monitoring ensures that each cell in the battery always performs at its maximum for optimal productivity. Durable construction. Can be used in temperatures down to -20°C without affecting operating time or battery life. The discharge protection prevents damage to the battery cells from overdischarge. Compatible with the entire M12™ series.