There are a number of interesting elements to i-Blason's PowerGlider External Battery Case, available for iPhone 5 ($70) and iPod touch 5G ($80). It's the first battery case we've seen for the most recent iPod touch. Both models are almost identical, with the same overall design, shape, and openings; the biggest difference is the iPod touch model is just a bit thinner. Inside PowerGlider is a 2200mAh battery, with a 500mA output capability. The top…
