Nokia Lumia 822: Get StartedChapter 3About the batteryYour phone has a removable, rechargeable battery. Use only approvedchargers designated for this phone. You can also use a compatible USBcable to charge your phone.You can set your phone to automatically save power when the batterycharge level is low.From the start screen, swipe left and tap Settings > batterysaver > On .When your phone goes into battery saver mode, you may not be able tochange the settings of all apps.Important:Only qualified personnel or an authorized service facilityshould replace the battery. Unauthorized battery replace-ment may invalidate your warranty.Charge the batteryYour battery has been partially charged at the factory, but you mayneed to recharge it before you can switch on your phone for the firsttime.If your phone is off when you start to charge the phone, it automaticallyswitches on.Make sure you use a compatible USB charger to charge your phone.If the phone indicates a low charge , do the following:B1. Connect the USB cable to the power adapter.2. Connect the power adapter to an electrical outlet.3. Connect the small end of the USB cable to the Micro USB ChargingPort your phone.When the battery is full, disconnect the USB cable from the phone, andthen from the electrical outlet.To avoid breaking the charger connector, be careful when connecting ordisconnecting the USB cable.When the battery is fully charged, the battery indicator in the top rightcorner of the screen shows the charge is complete .15