Newegg offers the RAVPower Element 10,400mAh External Battery Pack in Black, model no. RP-PB07, bundled with a Scosche Dual USB Car Charger for $26.99 with free shipping. (The car charger is added to your cart automatically.) That's the lowest total price we could find for the power bank alone by $6. (We saw the power bank for a buck less last week, but it wasn't bundled with a car charger.) It features 1-amp and 2.1-amp USB outputs and is compatible with iPhone, iPad, iPod, and many smartphones.