Yup. The 20W adapter.

Its honestly very annoying. I updated to 10.2 beta 3 in hopes for better battery life and will update once i go bed and let sleep tracking do its thing.

Took off charge an hour ago at 86% and its 76% as of now. So seems ok but it might drain quicker.

I could try a battery recalibration but doubt it would do anything

10.2 beta 3?

Im updating now as searching online people do say they notice it performing better.

Does it still suck ass?

Charging is painfully slow on mine. Use it with an apple usb c brick and it takes around 30 minutes to charge 60%.

The 10.2 beta 3 is looking good though, might update ti that. People have reported the battery is much better on it