MagSafe fever is very common phenomenon, in fact, MagSafe is not good, if you feel serious fever, slow charging, you can return it, so more money!
MagSafe is too sensitive to temperature, and it also heats up itself, so if you want to maintain the power of 15W (at present, I can only see the data lasting 3-5 minutes), it is temporarily impossible for this firmware to maintain 15W for a long time, and whether the firmware will be upgraded in the future can only be determined by Apple, including the firmware of the mobile phone and MagSafe.
magsafe some fever is normal. After Apple released the MagSafe external battery, in the actual experience, the MagSafe external battery did not have the serious fever of a third-party magnetic charging bank, but there was still fever. The MagSafe external battery is more portable to use, and there is no pressure to put it in your jeans pocket with your phone during actual use. During use, you only need to gently patch to start charging, and after use, you only need to separate the MagSafe external battery from the phone to put it in the bag.