Sorry to revive an old(ish) thread.
I am yet to see the 13 hour battery time on my 13" 2015 Air. The absolute max I got was 10 hours. I use Chrome as my browser. I am at the moment doing a "test" – the only two apps open are Mail and Safari... OK, and Activity Monitor. After changing from Chrome to Safari expected battery life went from 7:58 to 8:58 which was interesting to see, but it's still nowhere near 13 hours. The only tab I have open in Safari is this one I am typing in.
Activity Monitor (look at Chrome usage...)
So... where's my 13 hours Apple?
Coconut gives me 10 cycles, max capacity of 102%.
I am yet to see the 13 hour battery time on my 13" 2015 Air. The absolute max I got was 10 hours. I use Chrome as my browser. I am at the moment doing a "test" – the only two apps open are Mail and Safari... OK, and Activity Monitor. After changing from Chrome to Safari expected battery life went from 7:58 to 8:58 which was interesting to see, but it's still nowhere near 13 hours. The only tab I have open in Safari is this one I am typing in.
Activity Monitor (look at Chrome usage...)
So... where's my 13 hours Apple?