Battery Genie via Buy.com offers the ReVIVE DoubleUP Car and Wall USB Charger, model no. CH-DOUBLE-UP, for $6.99 with free shipping. That’s the lowest total price we could find by $15. This compact charger features fold-out DC (car) and AC (wall) plugs, as well as two USB ports. (You’ll need your own USB charging cable.)
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