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Help Green then red LED and repeating while on Car charger

cuban11182

Android Enthusiast
Apr 21, 2010
385
98
Florida
Any idea what this might be. While using the Navigation and plugged into the phone, it will initially turn red like it is charging. It will go like this for a while, but eventually it will go from green to red and continue to do so. It still shows the lightning bolt in the battery indicating it is charging, but I am wondering what it is doing.

Thanks
 

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