Battery Saver is useful when a charge needs to last longer, but it is not a magic battery repair. On supported Android phones it can limit background activity, and Google warns that some visual effects, features, network connections and apps may be delayed while it is on.
Turn it on or schedule it
On many phones, open Settings, choose Battery, then Battery Saver. Depending on the manufacturer, you may be able to turn it on manually, set a schedule or choose when it turns off. The menu names and available options vary, so use your phone maker’s instructions if these steps differ.
Before relying on the mode, think about what must update in the background. Email, messaging, location-based features or a work app may behave differently when battery use is restricted. If you are waiting for a time-sensitive message, check that app’s behavior rather than assuming everything will sync instantly.
Save power without guessing
Google also recommends reducing screen brightness, letting the screen turn off sooner and restricting apps with high battery use. Long navigation sessions, video streaming, hotspot use and extended camera sessions can consume significant power. If your phone is hot, cool it down; heat can drain and damage a battery.
A battery mode can help you make it to a charger, but the amount of extra time depends on your device and what you are doing. It will not restore an aging battery’s capacity. If drain is unusually rapid, check battery usage by app and consult the manufacturer rather than assuming a setting will fix a hardware problem.
For a trip, turn the mode on before the battery is critically low, then keep an eye on essential apps. The trade-off is less background activity in exchange for a better chance of having power when you need it.
Featured image credit: Alpha from Melbourne, Australia on Wikimedia Commons — CC BY-SA 2.0 (license).
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