Nokia Lumia 1020 User Manual page 12

You don't need to charge the battery for a specific length of time, and you can use the phone while
it's charging.
If the battery is completely discharged, it may take up to 20 minutes before the charging indicator
is displayed.A light indicates that the device is charging.
Tip: You can use USB charging when a wall outlet is not available. Data can be transferred while
charging the device. The efficiency of USB charging power varies significantly, and it may take
a long time for charging to start and the device to start functioning.
Make sure your computer is switched on.
First connect the USB cable to the computer, then to your phone. When the battery is full, first
disconnect the USB cable from your phone, then from the computer.
The battery can be charged and discharged hundreds of times, but it will eventually wear out. When
the talk and standby times are noticeably shorter than normal, to replace the battery, take the device
to the nearest authorized service facility.
Charge your phone wirelessly
No need for hassle with cables, just pop your device on a wireless charger, and it immediately starts
charging.
You may need a wireless charging cover for wireless charging to work. The cover may be included in
the sales box, or it may be sold separately. Only use original Lumia wireless charging covers designed
for your phone.
Wireless chargers are sold separately.
The charging areas on the phone and the charger need to touch, so make sure you align the phone
and charger properly. Not all phone models fit in all chargers.
1. Make sure the wireless charger is switched on.
2. If your phone needs a wireless charging cover, make sure it's properly attached to your phone.
3. Place your phone on the wireless charger so that the charging areas touch.
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