Battery performance for those who have a 6S/Plus and had a 6/Plus

[macfoxpro]

For those who have had a 6 and now have a 6S, what is the difference in battery life?
Longer/shorter battery life?
Was there a difference in the time it took to charge up a device vs the other?
Any other issues regarding the batteries between the two different models?

Same for 6Plus to 6sPlus
Please note the chip in your phone.

 

[jlevy73]

There is a thread for this already

 

[Newtons Apple]

Another chip thread.