A4C offers the refurbished SaFPWR Milano Rechargeable Smart Battery Case for iPhone 4 and 4S in four colors (Shiraz Red Crocodile pictured) for $7.95 with free shipping. That's $2 under our mention of a refurb from last year and the best price we've seen for this case. (It's also a price low for a refurb by $5.) This case purports to double the battery life for an iPhone 4 or 4S. Deal ends June 13.

A 90-day A4C warranty applies.