I can't charge my unit

Emma lynch

February 20, 2014 10:35

I have plugged my unit into the lighter in my car and the USB and a red light flashes the. Blue twice, but no light stays on while charging. Also, there is. no sound from the unit.

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  Pablo Motta

  February 20, 2014 17:02

  @Emma, what model unit do you have? Have you tried to charged the unit using an in-house wall charger or a computer?

  Normally, the red light will stay on solid when charging. Then, when charged the light will turn solid blue.

  I would try to reset the unit. Here's how: http://www.youtube.com/watch?v=U4_ScTHvFJI

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  Alvit Ubit

  January 30, 2025 19:06

  Phone is able to charge on ANY charger I've given it so far: usb/computer, Garmin chargers, and a slew of other 12v car adapters. The only problem is the Sena 12v car adapters. They only work on the SMH10s and NONE of my other devices like null's brawl china apk working on all device. I agree with your conclusion that they're putting out a very low amperage - just enough for the SMH10 and my other usb devices need more. Too bad they can't be used globally, like all the other adapters I've tried.

   

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  Atterburryson Leslie

  February 19, 2025 09:51

  Phone is able to charge on ANY charger I've given it so far: usb/computer, Garmin chargers, and a slew of other 12v car adapters. The only problem is the Sena 12v car adapters. They only work on the SMH10s and NONE of my other devices like nulls brawl apk working on all device. I agree with your conclusion that they're putting out a very low amperage - just enough for the SMH10 and my other usb devices need more. Too bad they can't be used globally, like all the other adapters I've tried.

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  Jasmine

  February 07, 2026 09:40

  The red and blue flashing usually means the unit is detecting power but not entering a full charging mode. I’ve seen this happen when the car charger isn’t supplying enough current. Try charging it from a mains plug or a power bank for at least 30 minutes. If there’s still no solid light or startup sound, it could indicate a battery or internal charging fault rather than a cable problem.

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