한국소비자원 2020-06-16T01:36:19Z 2020-06-16T01:36:19Z 2012-12-28 2012-12-28 1001322827 https://www.kca.go.kr/eng/sub.do?menukey=6007&mode=view&no=1001322827 https://www.kca.go.kr/repo/handle/2015.oak/6517 한국소비자원 http://creativecommons.org/licenses/by-nc-nd/2.0/kr/ Battery's performance has improved more than 1.85 times, but its price has risen more than 9 times. news