It seems that recent update to Google Play Services drains battery power more quickly. Many users are now complaining about this issue that came about after updating Google Play Services to version 11.7.46. It seems that the issue is more prominent on Pixel and OnePlus devices. Google not yet released a fix for the issue, but there is a simple workaround to fix this issue.
If you are experiencing high battery drain from Google Play Services on your Android phone, then here is how to fix it. Since Google Play Services is most important on an Android phone, any issue related with it definitely will affect user’s experience. Check out how to fix it.
Some users found that installing the latest beta version of Google Play Services fixed the abnormal battery usage. The current beta version of Play Services is 11.9.49 that you can install either via beta channel or manually by downloading its APK from APK mirror.
You can opt-in for Google Play Services beta testing by going here, after sign in with your Google account, you will get latest beta version update on your device.
Alternatively, you can download Google Play Services APK (latest version is v11.9.49) from APK Mirror [here] and install it manually.