Simply disabling the Google Maps could solve the battery draining issue. However, there are some tips that might resolve the issue which won't resort to disable the entire app. Also, Android 6.0 Marshmallow offers Doze Mode which could address the same problem.

Since the Google Maps is a heavy software, it is unavoidable that it'll use a significant amount of data, processing power, and battery although, it is not a very important app. Moreover, it will look for the user's location time-by-time, and gives new updates like maps, area information, and other features. 

According to a report by Android Authority, there are some tricks for improving the high battery usage of Google Maps in the user's smartphone and useful tips on how to lessen the battery usage of Google Maps process. 

Basically, if the Google Maps is not really being used, the user could disable it directly on its App settings. However, if the user still wants to use some features of Google Maps, there are some tips that don't really need to disable the entire app functionality.

Turning off the GPS of the device could save battery life. Since most smartphones have toggle for GPS, so it can be easily turned off. The user can also disable the Google Access Location on the Location Settings which could also help save battery.

Based on users comments on Android Forums, the Google Maps isn't the only factor that makes Android phones battery easily drained. There are apps that strongly lessen the battery life like Calendar, Weather, Newstand, etc. It additionally shows that cell on stand by takes much battery. 

According to Arstechnica, Android 6.0 Marshmallow lasts just as long as 5.0 Lollipop in a battery test. This keeps the screen on the whole time and loads a set of web pages until the phone dies. Most of Google's battery focus went to idle time with Doze mode.

The Android 6.0 Marshmallow offers solution to fast-drain battery. It features the Doze Mode that will help increase the amount of time an Android device will survive on a table. However, it does not subject on the Google Maps and other apps that affects battery life.