Groupon offers the Mota 2600mAh Smartphone Backup Battery Stick in four colors for $19.99 with free shipping. That's tied with our May mention and the lowest total price we could find in any color by $7. It includes an iPhone/iPod 30-pin connector, mini USB, micro USB, 2.5mm adapter, and 3.0mm adapter.

It's also available with an Accessory Bundle for $24.99 with free shipping. That's $65 off list the lowest total price we could find for this bundle. It includes five connectors, a case, wall adapter, and charging cable. Deals end July 20.