File this one under "just makes sense:" a completely compact (roughly 2.3" by 2.88" by 0.75") combination of an iPod/iPhone wall charger with an integrated 1400mAh battery and replaceable charging tips for use with mini- and micro-USB devices. That's NuPower Charge & Sync+ ($40), which lowers the charger-plus-battery travel footprint to the smallest size we've yet seen -- a fascinating exercise in miniaturization. Battery life should be capable…
