Combo Premium Protector Huawei Impulse
I've looked at them all (USB travel chargers) and owned many of them. I travel frequently with an iPhone, an iPad, a USB-charged iPhone battery, a portable DAC, portable headphone amp, and other USB gear, and I could not decide on which portable charger to keep in my airplane iPad bag. I ended up getting both this Skiva and the PowerGen 4-port 15W/3.15A.
Though the PowerGen looks and feels better (so sleek!), this Skiva is far more functional. Charging two iDevices, the Skiva charges both quicker. It seems the 3.5-amp/4-watt PowerGen charges, really, really ...S-L-O-W--L---Y ....when more than one device is charging--even when splitting the 3.5 amps between just TWO devices. Bear in mind that the amperage is split between any devices charged. As of the date of this review, at 4 amps and 20 watts, the Skiva has more total amperage than any other portable USB charger on Amazon and seems to charge the fastest.
The PowerGen is sleeker (it has a rubberized texture and the form factor is smooth so that it just slips into your bag compartment or pocket with no resistance. The shape of the Skiva, on the other hand, is lumpy and irregular. However, in actuality the size of the Skiva is about the same, and it may actually be a bit lighter.
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