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Instrument not charging？
See whether the red indicator light of the power supply is on, check whether the car power supply is connected, confirm that it can't be charged and send it back for repair.
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Data exceeded, no beep alarm？
See whether the red indicator light of the power supply is on, check whether the car power supply is connected, confirm that it can't be charged and send it back for repair.
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Instrument not charging？
See whether the red indicator light of the power supply is on, check whether the car power supply is connected, confirm that it can't be charged and send it back for repair.
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Data exceeded, no beep alarm？
See whether the red indicator light of the power supply is on, check whether the car power supply is connected, confirm that it can't be charged and send it back for repair.
