It won't hurt the battery
The iphone14promax supports charging power of 30W wired and 15W wireless.
iPhone14Pro\/ProMax uses Lightning interface, which means that there will be no significant improvement in fast charge, because the lightning interface does not support the current above 3A, iPhone14Pro\/ProMax supports 35W wired fast charge, which is much stronger than the previous 20W charging power. It is equivalent to increasing the \"blood return speed\".