Mophie tends to be the first to market but it looks like iBattz might squeak one in first. With two 2200mAh batteries, both the Mojo Refuel and rugged Moro Armor can recharge your iPhone 5 up to three times, says the company.
The Refuel is expected to be available next month for $89.90, while the Armor will be available in March for $99.90.
A third case, the AquaSeal Hi5 is waterproof and comes with a detachable 2500mAh battery. No word on pricing or date. More here.