Read Full Article here… lifehacker.com

Photo: Primakov (Shutterstock) There are plenty of times our devices are out in the cold. Maybe you’re skiing, and you take your iPhone along with you; maybe you ordered a brand-new tablet for the holidays, and the driver left it on your doorstep. Whatever the reason for your chilled devices, we have an important PSA: If your tech has a lithium-ion battery, and it is in below freezing temperatures, do not charge it . What happens when you charge a lithium-ion battery below freezing There are two main issues here. First, charging lithium-ion batteries when they are below freezing permanently reduces their overall capacity. All batteries lose their maximum capacity over time—that’s chemical aging. However, charging a below-freezing battery will immediately lower its capacity, making it seem like it’s much older than it really is. Who wants a brand-new piece of tech that loses battery power so quickly? No one, is the answer. Secondly, however, and more importantly, charging a battery in such a condition makes it dangerous to use. Charging a battery below freezing essentially turns it into a ticking time bomb. Quite literally—the battery could eventually explode. While it wouldn’t be necessarily immediate, and a fiery explosion is not guaranteed, that battery is destined to fail at some point in the future. This information comes to us from an incredibly detailed electrical engineering forum post from user metacollin. The post is an excellent, in-depth explanation of how it all works, including a breakdown of how lithium-ion batteries […]