My answer: I bought the 'max' Apple iPad Air at the time for storage, 128gb thinking I would be able to use this for more than 4 years, and then, here I am, with an 'unstable' battery, at the 4 year mark, loses power so so so fast some days, and then other days is ok, but then I plug it into power at 7% and in three minutes it says it's at 30%? That's not realistic. Seriously! Unstable, and absolutely not reliable. And I want to upgrade anyway, but I am thinking why? If I have this terrible problem with my 'Apple' battery why would I trust Apple with another product with an equivalent battery? Maybe there are Apple iPads out there with improved batteries? It isn't in their current statistics, but, are there Apple products with better batteries?
If you think there is an Apple product with a better battery available at this time, that won't be equally as unstable, please let me know.