Why is my iPhone charging upside down

Wireless charging: does it harm the iPhone battery?

Stephan Wiesend

According to a ZDNET report, wireless charging of an iPhone is said to make the battery age significantly faster.

EnlargeWireless but slow? All charging methods in comparison.

The wireless charging introduced with the iPhone 8 and iPhone X is certainly a gain in convenience, as you save yourself having to plug in an annoying cable. Uncertainty among many users of this technology, also known as QI, was probably triggered by a report on ZDNET. Adrian Kingsley-Hughes is of the opinion that wireless charging ages the battery faster than conventional charging using a Lightning cable. The background: An iPhone battery is designed for a service life of almost 500 charging cycles. After that, the capacity often falls below 80 percent and is often less reliable, for example in the cold. The number of charging cycles can be read out with a Mac app such as Coconut Battery.

According to the article by Kingsley-Hughes, however, the use of a wireless charging station should lead to a far higher number of charging cycles. Since using a wireless charging station, the number of cycles used has risen sharply. In his opinion, the fault is the low charging power of a wireless charging station. This charges an iPhone relatively slowly. According to his observation, this would continue to load the battery even after it was placed on a station. For tasks such as iCloud, WhatsApp or e-mail, the iPhone then has to continue to access the battery. It therefore remains active on the Qi station and consumes “life time”, whereas it would be relieved if it were connected to a wired charger. To save his battery, he has therefore switched back to wired charging.

Our opinion: How to handle an iPhone battery is controversial and there are countless tips, so vice versa fast charging with a very powerful charger is considered harmful. In our opinion, if you use a lame QI charger you are probably tempted to fully charge your iPhone far more frequently and constantly. If you want to be on the safe side, you should probably use a mat recommended by Apple when buying a Qi charging mat - and maybe not keep your iPhone on this charging station all day. The Belkin Boost Up and the Mophie Wireless, which deliver a relatively high charging power of 7.5 watts instead of 5 watts, are expressly recommended by Apple. In addition, Apple will shortly be launching its own charging mat with Airpower - which will also deliver a much higher charging capacity. Basically, the service life of a battery is also a matter of luck and not just a question of the number of cycles.