Apple has had smart battery cases since the iPhone 6/7 era. I think it depends on usage. In my home city, my phone goes all day no problem. On business trips to

Apple has had smart battery cases since the iPhone 6/7 era. I think it depends on usage. In my home city, my phone goes all day no problem. On business trips to NYC with all the tall buildings and taking more ride shares than normal, the battery gets hammered and dies. I had a smart battery case for years that I just used on trips. The simplicity of Apple's design was (to me) worth the premium. (no extra wire from battery to phone. no turning the battery case on and off, one wire to charge both, etc)