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BLACK+DECKER J312B 700 Peak Amp Portable Car Jump Starter Product Manual | Manualzz

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User questions

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Mary B.

What are the possible causes for the indicator light on the USB port being lit without any reason?
1. The device connected via the USB port is using over 2000mA of electric current. 2. USB-powered external devices may not be fully compatible with the port. 3. The power switch of the USB charge port is at the 'OFF' position. 4. The unit has insufficient power.
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Mary B.

What should I do if the indicator light on the USB port remains lit after following the troubleshooting steps?
Check if there are any issues with the USB device's cable or connection. If you are still experiencing issues, it is recommended that you contact the manufacturer for further support.
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