(Reuters) - Safety standards for lithium-ion batteries need to be modernized following a massive recall of Samsung Electronics Co Ltd phones after faulty batteries caused fires, a U.S. government agency said on Tuesday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=qHAIi2vVhzM:NBYdFmatCWk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=qHAIi2vVhzM:NBYdFmatCWk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=qHAIi2vVhzM:NBYdFmatCWk:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=qHAIi2vVhzM:NBYdFmatCWk:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=qHAIi2vVhzM:NBYdFmatCWk:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/qHAIi2vVhzM" height="1" width="1" alt="" />