We're all out here just trying to squeeze the most battery life out of our iPhones. Unfortunately, you've probably spent untold minutes? hours? days? of your life swiping up on apps in a fruitless effort to do so.

The man in charge of iOS at Apple, Craig Federighi, has confirmed that there is no need to bother killing your apps because it won't help your battery life. Mashable reports that Federighi's confirmation came in an email to an Apple customer, who had originally written to Apple CEO Tim Cook

In an email that was later published on 9to5Mac, the customer wrote to Cook and asked, "do you quit your iOS multitasking apps frequently and is this necessary for battery life?"

Federighi had a simple response to the customer's questions: "No and no. :-)"

Apple itself has said that apps that pop up in the multitasking view when you double press the home button aren't necessarily burning battery. When you switch to a different app, other apps go into a suspended state where they don't take up system resources. 

If you really want to do something to save some battery life, you can always make the ultimate sacrifice and delete the Facebook app. That move actually will you save up to 20 percent of your battery. Or you can pick up one of those smart battery cases, you know, if you don't care about making your iPhone ugly.

We're still holding out hope for those hydrogen batteries that will make our iPhones last for a week without a charge.