Despite its sleek design, the iPhone Air it actually has a respectable battery life, lasting somewhere in the region of 27 hours if you’re streaming video continuously. But you should still be careful that it kills you if you travel or have a heavy day. That’s where Apple’s is iPhone Air MagSafe the battery pack came in, and it’s on sale now for $79.

Apple

This iPhone Air battery pack is $20 off right now.

This accessory only works with the iPhone Air, but like the phone it’s attached to, it’s extremely slim at 7.5mm, so it’s important not to add too much when attached that it defeats the point of having a thin phone in the first place. The MagSafe Battery isn’t that big at 3,149mAh (enough to add an additional 65 percent charge to the Air), but it can wirelessly charge the AirPods Pro 3 as well, making it a very useful travel companion. You can also charge your iPhone while charging the battery pack.

At its regular price of $99, the MagSafe battery pack is an admittedly expensive add-on to what’s already an expensive phone, but for $20 off it’s worth considering what Engadget’s Sam Rutherford calls an “important accessory” for some users of his iPhone Air review.

Many Apple loyalists often insist on having first-party accessories for their iPhone, but there are plenty of third-party MagSafe chargers out there as well, many of them much cheaper than Apple’s line. Be sure to check out our guiding for those.

catheter @EngadgetDeals in X for the latest tech deals and buy advice.