A4C offers the refurbished Mophie Juice Pack Air 1,700mAh Charging Case for iPhone 5 / 5s in Red or Black for $34.95 with free shipping. That's $40 below the lowest total price we could find for a new unit, although we saw a refurb for $3 less in May. This 1,700mAh battery pack provides up to 10 hours of talk time or up to 8 hours on the Internet. Deal expires September 19.

A 90-day A4C waranty applies.