Originally Posted by
bhatech Fair enough, I generally compare battery life with my other devices or previous devices to get an idea since that's a better benchmark for me to compare.
Previous devices are only a good benchmark if you have the numbers.
For example the Snapdragon 845 was about 30% more power efficient than the 835. So you'd expect it to get that much better battery life. But you also have the confounding factors of is the antenna array used the same? Is the software optimization the same? The battery age/wear? Those things will alter the expected difference in battery life.
The better comparison would be looking at a control device then comparing several devices of identical hardware.