Android Tablet · System Info

Monitor battery usage and enable power-saving modes

Battery settings show which apps consume the most power, offer a Power saving mode that limits background activity, and let you set per-app background usage limits.

What you should know

  • Found under Settings > Battery and device care > Battery (One UI) or Settings > Battery on stock Android.
  • Tap the battery usage graph to see a per-app breakdown of screen-on and background power use since the last full charge.
  • Power saving mode reduces performance and background activity; a stronger "Max power saving" tier is available on some tablets for critical low battery.
  • Apps flagged as "Put unused apps to sleep" get their background activity restricted automatically after a period of inactivity.
  • Adaptive battery uses on-device machine learning to limit background power for apps you rarely open, and can be toggled under Battery > More battery settings.

Why it matters

Understanding which apps drain the battery in the background — not just on-screen — is the fastest way to fix a tablet that dies faster than expected between charges.

Best practices

  • Enable Adaptive battery so infrequently used apps are automatically restricted without manual tuning.
  • Turn on Power saving mode proactively during travel rather than waiting for a low-battery warning.
  • Charge using the tablet's original or a compatible high-wattage charger — underpowered chargers slow charging and can cause the battery percentage to behave erratically.

Common problems and fixes

Battery drains quickly overnight while idle
Check Settings > Battery > Background usage limits and add high-drain apps to the "Sleeping apps" or "Deep sleeping apps" list.
Battery percentage jumps or drops suddenly
Let the battery fully discharge and charge to 100% uninterrupted once to help the system recalibrate its charge estimate.

Tips and tricks

  • Settings > Battery and device care > Battery > More battery settings > Fast charging can be toggled off if the tablet runs warm during charging, trading speed for lower heat and long-term battery health.

Frequently asked questions

Should I keep the tablet plugged in all the time?

Occasional full charges are fine, but most manufacturers recommend keeping the battery between roughly 20% and 80% for daily use to slow long-term capacity loss.