난이도 & 준비물
증상
2004 프리우스의 12V 배터리가 계속 방전됨. 2년 전 중고로 구입했고 배터리를 2번 교체했음. 최근 교체한 배터리는 몇 주 전 설치했는데 일주일 정도 주차만 해도 약해지고 3번이나 방전됨.
처리 내용
배터리가 주차 중에 방전되거나 주행 중에 충전이 제대로 되지 않을 수 있음. 먼저 충전 상태를 확인하세요: 멀티미터를 20V로 설정하고 엔진을 켠 상태에서 배터리 양 극 사이의 전압을 측정합니다. 13.5~14.5V가 나와야 하며, 엔진을 2,000~3,000RPM으로 회전시켜 최대 충전 전압을 확인하세요. 다음으로 기생 방전(parasitic drain)을 확인하세요: 멀티미터를 암페어 측정으로 설정하고 배터리의 양극 단자와 양극 케이블 사이에 연결합니다. 50mA 이상이 나오면 문제가 있을 가능성이 높습니다.
출처
이 사례는 Stack Exchange (미국)에서 수집한 데이터입니다.
신뢰도 4.1점(높음) — 출처 소스의 전문성/검증구조를 기준으로 산정된 점수이며, 정확성을 보장하지 않습니다.
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