Remember when the HomePods were found to leave marks on surfaces? Now Apple is warning that the MagSafe charger can leave round marks on leather iPhone cases.

Apple has published a support document that highlights an issue when two of the company's products are combined. At the bottom of the document Apple warns that marks may appear on a leather case when charging with the new MagSafe charger.

"If you keep your iPhone in a leather case while charging with your MagSafe Charger, the case might show circular imprints from the contact," notes Apple.

Apple announced on 13 October that it would launch a leather case for the iPhone 12 on 6 November. The company said in a press release that: "iPhone 12 Leather Case will be available beginning Friday, November 6. MagSafe Duo Charger and Leather Sleeve will be available at a later date." These cases are not yet available to view on Apple's online store.

Apple has since added photos of what the marks will look like.

It appears that not only leather is affected by the issue. Pictures shared on the MacRumors forum suggest that even the £49/$49 Silicone Case can also result in similar marks when used during MagSafe charging.

The support document also mentions some other interesting details about the new charger, such as that the iPhone can turn off charging after 80 percent if the phone gets too hot from MagSafe.

In addition, it is mentioned that if you connect an iPhone for charging via MagSafe and the Lightning port at the same time, charging will only take place via Lightning.

It is also worth noting that you require wireless charging with a maximum of 15 watts, a power adapter of 20 watts must be used. The MagSafe charger can work with a 12 watt adapter, but the charging will be slower.

Also note that the iPhone 12 mini only charges at 12 watts with MagSafe.

It's also emerged that charging an older iPhone via MagSafe is slow. Read: You should not use MagSafe with iPhone 11.

Learn more about MagSafe here: What is MagSafe?

You may also like to read our iPhone 12 review.

This article originally appeared on Macworld Sweden. Translation by Karen Haslam.