With 24W of power, this first car charger can juice up two iPads at full speed. That's not unique in the car charger space, but what sets this Aukey model apart is its ultra-slim profile; it's small enough to look like it could be built into the car. [Aukey 4.8A / 24W Dual USB Car Charger, $8 with code MXLQQO9Y]

If you need more ports, and are willing to sacrifice a little space, here's another great option. [Aukey 48W/9.6A Four Port USB Car Charger, $12 with code LWJUZUWN]

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