Compatibility • MacBook Pro (Retina, 15-inch, Mid 2012–2015) Features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely • The magnetic DC helps guide the plug into the system for a quick and secure connection • When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge • Designed to be the perfect traveling companion This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery. Compatible with MacBook Pro with Retina Display Model Compatibility: MacBook Pro Weight: 1.14 Pounds Volts: 14.85 Volts Amps: 3.05 Amps Cable/Cord Length: 5 Feet Electronics Features: Charge Indicator Light Connection Type: USB-C Input AC Voltage: 100 - 240 Wattage Output: 85 Watts Input Amperage: 3 Amps Battery: No Battery Used