Someone is sending the tech world A LOT of faulty/**** batteries, and Apple seems to be particularly affected - though to be fair at least their batteries aren't bursting into flames, and furthermore Apple's products have really good battery life and energy efficiency WHEN the batteries work according to what Apple ordered from their manufacturer. Apple don't make intentionally terrible battery life, which is a lot more than what you can say for most of the industry.
Even so, about 50% of the Apple products I've owned have had battery life issues and had to be replaced.
iPad 2 was OK
iPhone 5 was bad
MacBook Pro 2011 15" was OK, though the charging port died at one point so...
iPad Air 2 was OK
iPhone 6S was bad
And this year Apple released what... 3 products with rampant battery issues? Come on, man. This is getting ridiculous.