Keeping a battery at a full charge or always draining it to 0 can damage it and reduce it’s capacity. Try to keep your battery midway charged when you can and only charge to 100% when you really need the extra time.
Avoid using your phone at all if the temperature is below freezing 32 °F (0 °C). If you live in a very cold region and spend a lot of time outdoors, invest in an insulated phone case. Only charge your battery at temperatures between 41 °F (5 °C) and 95 °F (35 °C). If the phone or charger feel hot to the touch during a charging session, unplug the phone from the charger as soon as possible to avoid damaging the battery.
To turn on your iPhone’s Low Power Mode, open the Control Center and tap the battery icon. If you have a Samsung Galaxy, open Settings and go to Battery and device care > Battery > Power saving. Tap the switch to turn on Power Saving Mode. [6] X Research source For other Androids, go to Settings > Battery > Battery Saver and tap Turn on now. [7] X Research source
iPhone: Open your Settings and go to Battery > Battery Health. Samsung Galaxy: Open the Samsung Members app and go to Get Help > Interactive checks (or View tests) > Battery status (or Battery). [9] X Research source Other Androids: Open the Phone app and dial ##4636##. When the menu appears, select Battery information (it may be buried in another menu). You can also try other Android battery health apps, such as CPU-Z, Battery by MacroPinch, and AccuBattery by Digibites. [10] X Research source
