Those who are buying this- why? Do you go on long hikes or go places where you don’t have a charger?
Examples of situations where I’ve successfully relied on the prior smart battery packs:
1) family vacations, e.g. Disneyland. Very draining on battery because:
(a) my sony cameras use an iPhone app that runs in the background to synchronize gps information into the photos
(b) i take a lot of photos with the camera app
(c) i use apps on the phone to get around (e.g. Disney app to get fast passes or check line lengths, or maps app to find my way around town, etc)
(d) while waiting in lines, i use the phone to keep myself busy (answering work emails, reading docs, surfing the news)
(e) these tend to be very long days, with active use over a 12-hour-or-so period.
2) work travel
(a) on travel days I can easily be using my phone for more than 12 hours between time zone changes, flights, sitting in airports and ubers, etc.
(b) heavy use while traveling (music, videos, Uber, maps, reading and responding to work mail, reading news, etc.)
3) swim meets
(a) my kids spends 5 minutes in the pool, but we sit there 6 or 7 hours.
(b) the phone keeps us entertained while we wait, and also is used to track meet results and keep track of seeds and event timing
In each of those situations, in the past, I’ve run my battery down to zero, even the old “plus”-sized phones which had pretty great battery life. I relied on battery packs with built-in lightning cables or with add-on lightning cables. The smart battery case is a much more elegant solution.