Milwaukee M18B4 18V 4.0Ah Redlithium-Ion Battery

An 18V 4.0Ah REDLITHIUM-ION Battery which delivers up to 2x more run time, up to 20% more power and up to 2 x more battery life compared with other Lithium-Ion technologies. REDLITHIUM-ION protection with REDLINK digital overload protection prevents users from damaging their cordless tools in abusive situations. The unit includes durable metal frame and shock responsive separators to protect from vibration and drops. Features also include water protection and temperature protection down to -20°C. Compatible with any Milwaukee M18 Tool. · · · Delivers up to 2x more run time, up to 20% more power and up to 2x more battery life compared with other Lithium-Ion technologies · · REDLITHIUM-ION battery pack provides superior pack construction, electronics and fade-free performance · · Individual cell monitoring ensures optimal charge and discharge for maximum life · · Durable metal frame battery construction with shock responsive separators preventing pack failure from excessive vibrations or drops · · Water protection routes water away from the electronics & out of the battery pack · · Can be used in extreme temperatures down to -20°C without compromising on runtime and battery life · · On-board battery fuel gauge helps the user to maximize his battery run-time efficiency