How long does the iPhone 6's battery last?

Ik not talking about the battery life on the phone, I'm talking about the battery life in the phone. Like for instance, I heard that some iPhone batteries last for two years until they die. I've had my phone for two years now, and I'm just wondering if my battery will die anytime soon.

There's no timeline/expiry for them. Of course over time they wouldn't hold as much charge as they did when it was new, but you shouldn't have to worry

How long does a car last? It can last a few miles to many hundreds of thousands of miles.

It all depends on how well the car, and in this case, phone is maintained. If you constantly have max brightness, Bluetooth, Wi-Fi, GPS, games and other battery intensive apps, then your battery will not last as long.

Most those iPhone battery has charge back life about 500 times. If you used up its power and charged it back daily, it closes to end of its life or its battery power capacity reduce less than half even not yet die away.

We got 2 1/2 years out of ours. Started to not hold s charge well, no matter how we adjusted things. So last week, we both got new batteries. Ten minutes, $65 each in the mall. We were also told to never charge to 100 or plug the phone in overnight. Keep it around 50 60 or so.

7-10 Hours

It varies with each battery.

There's no way to predict how long any individual battery will last.