Nokia DT-910 - Manual (Page 5)

It's normal for the charger and the charged phone to warm up when charging. Using
the phone, for example, to stream music while charging may increase the warming.
Keep the area around the charger free of clutter. If there is something besides your
phone on the charger, the phone doesn't charge, and the white indicator light blinks
quickly.
Indicator lights
Wonder what the different lights on your charger mean?
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