Thanks to compact SSD storage in MacBook Air, there’s plenty of room for a big battery. Working together with the power-efficient fifth-generation Intel Core architecture, this battery can post some impressive numbers. MacBook Air gets up to 12 hours of battery life on a single charge. That gives you all-day power for surfing the web or watching iTunes movies. Put MacBook Air to sleep for more than 3 hours, and it enters standby mode to conserve battery life for up to 30 days.