Groupon offers the Digipower JS 720mAh ChargeCard External Battery Pack for iPhone 4 / 4S in Red, model no. JSCCIPRD, or White, model no. JSCCIPW, for $8.99 plus $3.99 for shipping. That’s the lowest total price we could find by $5. It provides two hours of extra talk time.
Read the original post by dealmac – Today’s Edition