With all these different rated usb as wondering what to look out for , charging a battery booster pack and tyre inflator and dont want to keep on to rely on my phone charger.
So thought i would ask for suggestions cheers
Get one with 3.1amp . the wattage rating of the charger is spread across all its outputs so getting a 40w plug with 4 ports isnt necessarily better than a 20w with 2 ports.
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