Do not mistake power efficiency for long battery life. Power efficiency doesn’t mean all tasks use little power and you will always have a long battery life. Ap

Do not mistake power efficiency for long battery life. Power efficiency doesn’t mean all tasks use little power and you will always have a long battery life. Apple’s power efficiency shines in idle mode. When you put light but constant strain on the machine, e.g. with IDEs and compile-on-save, battery life goes down quickly, no matter how efficient. Choose wisely. A MacBook Pro (Mid 2014) still has roughly the same performance as a 2016 model but is much, much cheaper. I recommend you pick a used 2014 or 2015 model in good condition. Saves you a lot of money (> $1000).