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Just Charge It

机译：只需充电

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摘要

The scenario is to arrive at the airport to find your trusty four-year-old battery flat. Worse yet would be to find a relatively new battery dead from sitting for the past two months. What's the next thing to do? Find a friend and jump-start that puppy (or get a jump from the FBO). If you do, kiss-off both the old battery as well as the newer battery to a significantly reduced useful life before it flunks the FAA capacity test or has anywhere near the reserve capacity you would need should your alternator fail while IFR or night or even in busy controlled airspace. An alternator-based charge into a dead or badly discharged battery hammers the battery internals with far more heat via high current than is good for battery life. The reason high alternator current does not damage a reasonably charged battery is because the internal resistance of a discharged battery is significantly lower (proportionally lower, since the resistance of a battery is under one Ohm).
机译：方案是到达机场，找到可信赖的已有四年历史的电池组。更糟糕的是，在过去的两个月中，发现一个相对较新的电池没电了。接下来要做什么？找到一个朋友，然后开始做那只小狗（或从FBO那里跳下来）。如果这样做的话，请先将旧电池和新电池接吻，以显着缩短使用寿命，然后再使FAA容量测试不合格或在备用容量接近备用容量时（如果IFR或夜间或什至晚上发电机失效）在繁忙的管制空域。基于交流发电机对死掉或放电不良的电池进行充电会通过大电流对电池内部产生更多的热量，而不是延长电池寿命。高交流发电机电流不会损坏合理充电的电池的原因是，放电后的电池的内阻明显较低（成比例地较低，因为电池的电阻低于1欧姆）。

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