Battery life is one of the biggest strength the iPad has always had over a computer. Depending on what you are doing, it lasts for a good 6-10 hours of use. Hence why it's such a great travelling companion. Whenever I use mine I have no battery anxiety.
Yep, this. We traded in a couple of iPad 3 (42Wh battery) last year and even after 5 years, battery life on those were still excellent.Are you referring to how long the battery will last between charges, or the total life of the battery? Either way, the battery in an iPad Pro will outlast an iPhone battery with regard to time between charges and total life. And yes, much depends on how you use your device.