The U.S. Postal Service, effective May 16, has prohibited primary lithium metal or rechargeable lithium-ion cells and batteries, as well as devices containing the power packs, from being mailed internationally. The move is temporary. USPS, which reported $3.2 billion in losses during the fiscal year third quarter, said it expects to lift the ban Jan. 1 on specific quantities of lithium batteries when they are properly installed in personal electronic devices. By 2013, the Int...