The Hyperjuice 1.5 MBP-222 is compatible with all models of Apple MacBook / MacBook Pro / MacBook Air including Retina.
– Use your MacBook for up to 53 hours
– New version 1.5 now updated with higher power output to better support Retina MacBooks and 2x 12W USB ports to quick charge any 2 USB devices at the fastest speed
– High capacity 222-Watt-hour lithium ion battery
– Industrial grade lithium ion cells, rechargeable up to 1,000 times
– Built-in short circuit, overcharging and temperature protection