But if you wanted to play Real Racing HD on your iPad for a month straight or drive your Tesla from Seattle to Miami on a single charge, you'd need a battery the size of a freight train.

FORBES

Longtime Chelsea target Willian leveled in the ninth minute but fellow Brazilian midfielder Oscar gave the home team the halftime advantage with a superb long-range volley after Pyatov - racing out of his area -- headed a clearance straight into his path.

CNN: Barca's unbeaten run ended by Celtic

Ezequiel Lavezzi wasted the most clear-cut opportunity, racing onto Zlatan Ibrahimovic's through ball only to fire straight at the onrushing Victor Valdes.

CNN: Messi emerges to rescue Barcelona