Rog phone 3 - magnet patch for back case

in ROG Phone 3
Hello,
Im thinking to get an car phone holder, and i found this magnetic holders. I got an doubt about them, magnetic patch to glue on back case can damage the battery?
Its safe to use?
Thanks
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Comments
@Yashny Perhaps someone else (who has experience with similar accessories) can give you a longer answer, but as this is a third-party accessory, I just want to remind you that we can't guarantee it won't harm your device. Potential damages would most likely be treated as CID and fall outside of your warranty.
Thanks! Will wait for answers