Milwaukee® REDLITHIUM-ION™ batteries have sophisticated electronics (REDLINK™ Intelligence) and overload Protection which prevents the user from damaging their cordless power tool investment in abusive situations. It has a temperature Management System which keeps the battery in ideal temperature range to provide maximum life.
With individual Cell Monitoring which ensures optimal charge and discharge for maximum life and discharge protection which prevents cell damage from over-discharge.
Up to 2X more run time*, 20% more power*, Up to 2X more recharges*
*Compared with other Lithium -Ion technologies and / or with previous Milwaukee® battery technology. Results dependant on voltage, tool and application.
They also feature a fuel gauge to display their remaining charge.
The M18-B4 battery has the following specifications:
Battery type: Lithium-Ion.
Voltage: 18 Volt.