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I left my car un-driven for 3 months when I had my vocation in China. After being back,

I left my car un-driven for 3 months when I had my vocation in China. After being back, I cannot ignite it even after running over 30 minutes by jumper-starting. Next day, after driven for 2 hours, it's OK. But when a Walmart tech used a digital multi-meter-like instrument to test my battery, the instrument displayed my battery is bad, need replacement. Since I doubt the instrument, I went to a GoodYear shop and got the exactly same result. Then I replaced my battery. My old battery is only 4 years service. Before I left for China, there is anything wrong w/ my old battery. Do you think I need to replace it or not? Thanks.
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Replies, comments and Discussions:

  • 枫下家园 / 爱车一族 / 好多朋友着不了车就怀疑是电瓶的问题,现提供检修方法如下:
    打开车上的大灯、防雾灯,然后按喇叭,如果喇叭声音清脆那可已肯定问题不是出在电瓶上,如果喇叭声明显很微弱,那就是电瓶亏电。如果灯也不亮,喇叭干脆不叫唤,最好先检查一下线路,大多数是因为电线松动或电瓶桩头锈蚀导致的。
    如果电瓶缺电,在并线启动后运行30分钟电瓶仍不能起车(如果你的车停了1年,而电瓶又是个破东西,30小时才行,哈哈!)那就可能是发电机不正常工作。
    • I left my car un-driven for 3 months when I had my vocation in China. After being back,
      I left my car un-driven for 3 months when I had my vocation in China. After being back, I cannot ignite it even after running over 30 minutes by jumper-starting. Next day, after driven for 2 hours, it's OK. But when a Walmart tech used a digital multi-meter-like instrument to test my battery, the instrument displayed my battery is bad, need replacement. Since I doubt the instrument, I went to a GoodYear shop and got the exactly same result. Then I replaced my battery. My old battery is only 4 years service. Before I left for China, there is anything wrong w/ my old battery. Do you think I need to replace it or not? Thanks.