That’s why manufacturers set limits on the amount of charge in their batteries. Most of the time, they’re set so only around half of the lithium in the lithium cobalt oxide layer is removed during one full charge. “Your battery could give you more charge if you went beyond removing half of the lithium, but you wouldn’t be able to do that very many times.”

Charging your phone on airplane mode makes it charge faster

True (kind of)

A common tip to speed up phone charging when you’re in a hurry is to stick it on airplane mode. Airplane mode means that all the radio frequencies are turned off, so you won’t have any cellular data and—with some phones—your Bluetooth and Wi-Fi connections will also be severed. In theory, since your phone is doing less work, the battery should charge faster, right? That’s technically true, but the speed difference turns out to be pretty minimal. A trial by CNET in 2014 found that turning on airplane mode shortened the charging time