This provides around 1.5 or 2 days use respectively, the devices also feature wireless charging similar to the previous model (but chargers are not compatible). (t3.com)
Even though the 6P doesn't feature wireless charging capabilities, it does come with quick charging technology. (androidauthority.com)
It's worth noting, due to the metal design, the Pixel 2 doesn't feature wireless charging. (t3.com)