But if size is not a chief concern for you, a slightly larger charger with multiple ports is often a better value than a smaller one that can charge only a single device.
Multiple USB ports: This feature is nice to have, but it’s not as necessary as it used to be now that particularly small, affordable, and properly performing options are more readily available. 
Accepting a little more volume is fine if that means more power or more ports, but all other things being equal, smaller is better. Size: Although absolute size is not the top determining factor, we naturally prefer smaller chargers to larger ones.We use this as a comparative figure, ruling out models that are unnecessarily expensive.
Power-to-dollar value: Simply put, we consider how good of a value each charger is for the total power it can put out across its ports. Considering the generally low prices of these chargers, you won’t find significant savings by choosing a charger slower than 12 watts. #Lifecraft phone charger cords android#
USB-A ports with 12-watt or QuickCharge 3.0 output: USB-A charging maxes out at 12 watts (5 volts, 2.4 amps) for Apple devices and many Android phones, though some of the latter can charge faster via Qualcomm’s QuickCharge 3.0 standard. Those more-powerful and more-expensive chargers are better options if you need to charge a tablet or a laptop. 
Although having higher output doesn’t hurt since your device draws only as much power as it’s rated for, paying more for power you won’t use doesn’t make much sense, so there’s no reason to buy anything over 45 watts specifically for your phone.
USB-C ports with 18- to 45-watt output: USB-C ports allow many phones to charge faster-with the right cables-drawing power at 15, 18, or 20 watts (the higher two levels are designated as USB-C Power Delivery, or USB-C PD).
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