Silvercrest SURB 520 A1 - Manual (Page 24)

Power Bank SUPB 520 A1
English - 23
Appendix
Troubleshooting
Problem Cause, action
A connected device is not
charged Press the button to start the charging process.
 The Power Bank battery is empty: recharge the battery.
 No USB connection to device: check the USB connection .

Some devices, especially mobile telephones, require a special USB
charging cable which you can buy separately. This is not a
malfunction of the Power Bank.
 The connected device is faulty or cannot be charged via USB.
Power Bank is not charged  Press the button to start the charging process.