Milwaukee M12 B2 12v 2.0Ah Li-Ion Battery Twin Pack FEATURES Sophisticated electronics: REDLINK™ intelligence Overload protection - Prevents user from damaging their cordless power tool investment in abusive situations Temperature management system - Keeps battery in ideal temperature range to provide maximum life Individual cell monitoring - Ensures optimal charge and discharge for maximum life Discharge protection - Prevents cell damage from over-discharge Integrated weld frame Cell separator Impact and vibration protective rubber SPECIFICATION Battery Pack Capacity: 2.0Ah Battery Type: Li-Ion Charge Time With C12 C Charger: 40 minutes Weight: 0.2 kg Voltage: 12v Single Part Number: 4932430064