mwave offers the iSolar 10-watt Portable Solar Battery Kit for iPad and Tablets, model no. MIC-10W, for $69.99 with free shipping. That's $10 below our December mention and the lowest total price we could find by $8. It can provide up to eight hours of iPad use and features a 20-watt lithium rechargeable battery, built-in MPPT controller, and more.