Don’t you hate it when your iPhone battery goes dead and you have no way of recharging it? Here is a perfect solution to extend the mount of usage time on your iPhone anywhere with this compact portable battery. The PureGear Rechargeable (White) Portable External Battery Pack Charger for Apple iPhone 4S, 4, 3GS, 3G (Mfi Certified) adds up to one hour of additional usage time. It originally sells for $29.99 but you pay $9.98 (free super saver shipping). You save $20.01 – that’s a savings of 67%. It is receiving good reviews on Amazon.