Share We may earn a commission when you click links to retailers and purchase goods. More info. As a part of the December Pixel Feature Drop, Google announced a new feature for select Pixel phones called Adaptive Charging. The idea for Adaptive Charging was to offer a solution that could help take care of your battery by charging it steadily over a long period of time rather than quickly. I’m not sure there was a lot of confusion about how Adaptive Charging would work (we assumed it worked at night and trickle charged a phone), but a Google support page for the feature lays out exactly when your Pixel 4, Pixel 4a, or Pixel 5 will try and trigger it.