My iPhone 13 Pro battery lasts about 48 hours if I have light to moderate usage, especially if I'm not using it in a bright room or outside. That means iPhone batteries can also last “up to 2 days”. It could even last longer with just audio usage.The article states it has up to 2 days of power on a single charge. Compare that to the iPhone battery life measured in hours.
You are correct though that iPhone battery life is measured in hours. I’ve seen more than 48 hours, which is measuring battery charge in hours.
By the way, one minute of battery life is also included in the set of “up to 2 days”. A statement like "up to 2 days" doesn’t mean much without actual independent test data.
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