iOS 9 beta 1 on the iPhone 6 isn’t exactly battery-friendly. To deal with this, you have to either uninstall it and get back to iOS 8.3 or just put up with having terrible battery life on your device. However, it looks like there’s a third option: It just so happens that you can purchase a 10,000 mAh portable power source on Amazon right now for less than $10, which should fix all your battery problems for the time being. And if that’s not cool enough, consider this external battery pack can recharge two devices at the same time.
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