Android Battery Problems: Find the Root Cause

Understanding Your Android Device's Battery Usage
Android operating systems include a native battery statistics feature. This tool displays the applications consuming your device’s power.
However, the integrated tool often lacks the depth of data required to pinpoint the underlying reasons for diminished battery performance.
Deeper Insights with BetterBatteryStats
BetterBatteryStats is a third-party application designed to provide a significantly more granular view of your phone's battery consumption.
This app allows users to accurately determine which applications and system settings are contributing to battery drain.
By utilizing BetterBatteryStats, you gain the ability to identify specific culprits impacting your device’s battery life.
The detailed reports generated can help optimize settings and manage app usage for improved power efficiency.
Ultimately, BetterBatteryStats empowers users with the knowledge needed to address and resolve battery-related issues on their Android devices.
Understanding Battery Usage with BetterBatteryStats
The BetterBatteryStats application can be purchased through Google Play for $2.99, representing a valuable investment for users seeking detailed battery insights. Alternatively, a free version is available for download directly from the application’s dedicated thread on the XDA Developers forum, allowing potential users to evaluate its functionality before committing to a purchase.
Should you choose to utilize the app, data collection commences following your initial full charge cycle. After installation, allow BetterBatteryStats sufficient time to gather information while you charge your device.
Normal phone usage over several hours, a typical daily routine, or even leaving the device idle overnight will provide comprehensive data regarding battery consumption patterns. It’s important to note that the application leverages Android’s built-in event system, ensuring minimal impact on overall battery life during data acquisition.
Data Collection Process
The app doesn't require elevated permissions or root access to function effectively. It relies on the standard Android mechanisms for monitoring system activity.
This means that BetterBatteryStats won't introduce any significant overhead or drain your battery while it's working in the background. The data gathered is purely observational, reflecting your device’s inherent power usage.
Understanding Wakelocks on Android
An Android device operates across three distinct states: fully awake with the screen illuminated, awake but with the screen darkened, and in sleep mode.
Maximizing the time spent in sleep mode is crucial for conserving battery life when the device isn't actively being used. This state draws minimal power.
However, continuous sleep isn't always possible. Applications requiring background processing utilize partial wakelocks to prevent the device from entering sleep while tasks are underway.
Consider applications like Gmail checking for new emails, a music player functioning with the screen off, or the Contacts app synchronizing data – all rely on partial wakelocks to maintain device activity.
Observing Wakelock Impact
The effects of wakelocks become apparent when examining device state information collected by tools like BetterBatteryStats.
For instance, a device active for over 21 hours might have had its screen on for only 12 minutes, yet remained awake for nearly two hours.

This discrepancy – over an hour and a half of wakefulness during periods of inactivity – is attributable to partial wakelocks. Reducing wakelock duration can significantly improve battery performance.
It’s important to note that wakelocks measure wake time specifically when the screen is off. Expected and unavoidable wake time will occur when actively using apps, such as listening to music with the display disabled.
Investigating Partial Wakelocks
Accessing the partial wakelocks information is done by tapping the "Other" menu option located at the application's top section. From there, choose "Partial Wakelocks." A comprehensive list detailing the actions triggering these wakelocks will then be displayed.
The application responsible for the highest number of wakelocks will be positioned at the top of this list. This prioritization helps pinpoint the areas requiring immediate attention for optimization.
As an illustration, consider the screenshot provided. It reveals several potential sources of wakelocks. These include Google Maps’ automatic location updates – likely to support Google Now’s functionality – as well as synchronization processes for Pocket, Twitter, and the Google+ application.
Specifically, Pocket is shown to be syncing unread articles, Twitter is updating with new tweets, and Google+ is refreshing its content feed.

Addressing Partial Wakelocks for Extended Battery Life
Understanding the impact of wakelocks allows us to optimize our phone’s battery performance. Several adjustments can be made to conserve power. These include disabling background location reporting within Google Maps (accessible via Google Maps app --> Settings --> Location settings --> Location reporting --> Do not update your location).
Furthermore, adjusting synchronization settings in applications like Pocket, by reducing frequency or opting for manual syncing, can significantly reduce battery drain. Similarly, limiting Twitter’s tweet checking frequency and disabling Google+’s sync function are effective strategies.

Should Google Talk appear prominently on a list of wakelock-inducing apps, and if it’s not actively used, signing out can minimize its impact. For any application identified as causing wakelocks, consider reducing its sync frequency, switching to manual synchronization, or completely disabling sync if the feature isn’t essential.
It’s important to recognize that these adjustments involve trade-offs. For instance, disabling automatic Gmail synchronization to reduce wakelocks means you’ll only receive new emails when manually refreshing the app. This also prevents immediate notifications for incoming messages.

If an application consistently generates wakelocks and is no longer needed, uninstalling it is the most effective solution. If the app is a pre-installed system application and cannot be uninstalled, disabling it is an alternative. This can be done through the Settings screen, under Apps, then the All list, followed by selecting the app and tapping Disable.
Exercise caution when disabling apps, as it could potentially lead to system instability. Only disable applications you are certain are unnecessary.

When the specific setting causing a wakelock is unclear, a web search can often provide answers. It’s likely that other users have encountered and resolved the same issue.
For a more comprehensive approach to extending your Android phone’s battery life, explore our detailed guide dedicated to maximizing battery performance.