Hello, My iPhone 13 Pro Max heats up a lot while charging it with the original 20W charger and the 2M cable even though I don’t use it while it’s charging and I also take it out of its case, it heats up so much that it’s almost uncomfortable to touch the phone..
Is it normal? I have bought both the charging brick and the cable from an Apple Store so I’m sure they’re genuine
iPhone 13 Pro Max
It’s normal; called the Second Law of Thermodynamics. Anything that creates or uses energy does so with some loss. That lost energy is expressed as heat. So when you charge the phone it generates heat in the power source, heat in the charger circuit in the phone, and heat as the energy goes into the battery. The faster the charging, the more heat is generated. Likewise when you discharge the battery; not all of the energy from the battery gets to the circuits that use it. Some of it becomes heat.
And fast charging generates a lot of heat (physics rules!). When you fast charge your iPhone it will pause at 80% to allow the battery to cool down. Some time later it will resume if you leave it plugged it, and charge more slowly, tapering the charge rate until it reaches 100% and charging stops. It can take another hour or two after reaching 80% to complete the charging.
It’s normal; called the Second Law of Thermodynamics. Anything that creates or uses energy does so with some loss. That lost energy is expressed as heat. So when you charge the phone it generates heat in the power source, heat in the charger circuit in the phone, and heat as the energy goes into the battery. The faster the charging, the more heat is generated. Likewise when you discharge the battery; not all of the energy from the battery gets to the circuits that use it. Some of it becomes heat.
And fast charging generates a lot of heat (physics rules!). When you fast charge your iPhone it will pause at 80% to allow the battery to cool down. Some time later it will resume if you leave it plugged it, and charge more slowly, tapering the charge rate until it reaches 100% and charging stops. It can take another hour or two after reaching 80% to complete the charging.
iPhone 13 Pro Max heating up while charging with 20W charger
