Like so many other accessory makers, Incase is trying its hand at portable battery packs for iPhones, iPads, and iPods. Coming in two versions -- Portable Power 2500 ($60) and Portable Power 5400 ($80) -- multiple colors are available, and a USB recharging cable is built into each. The plastic boxes have USB ports for 2.1-Amp charging output, and a rubberized pattern of dots underneath. Naturally, the higher capacity version is larger — but not…
