Dual USB Cigarette Lighter Adapter Fast Car Charger 3.1A QC3.0 LED Digital 1pc Osram When a fuse blows it

When a fuse blows it lights up the red led as a clear indicator that the fuse has blown

which is safe

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Dual USB Cigarette Lighter Adapter Fast Car Charger 3.1A QC3.0 LED Digital 1pc Osram When a fuse blows itDual USB Cigarette Lighter Adapter Fast Car Charger 3. 1A QC3. 0 LED Digital 1pc Description Dual USB ports to charge both devices simultaneously The LED display monitors the car battery voltage in real time (when no device is connected for charging); the charging current is displayed when the phone is charging3. 1A ultra high current output, based on intelligent distribution of different devices, It immediately adjusts the output according to the