For charging phones its not the most efficient route to use a inverter, since you are taking 12vDC to 120vAC back down to 5vDC, for this use I would get a 12vDC USB ports, and use inverter that require 120vAC.
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2018 Passport Grand Touring 3350BH
2015 GMC Sierra 2500HD Duramax Diesel
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