Japan has launched an investigation into a possible battery defect in first-generation iPod nano models following a report of one of the devices shooting out sparks while recharging. Citing an official at the trade and economy ministry, the Associated Press reports that a defect is suspected in the first-generation iPod nano, model number MA099J/A, which was sold from September 2005 to Sept. 2006. The report states that the problem surfaced in…
