Automotive lead-acid battery capacity often appears lower self-discharge, excessive consumption of electrolyte and other failures. For these failures, observation can be used to diagnose.
First check the battery externally. Shell should be no large cracks, no leakage; electrolyte liquid spills can cause too low, can lead to reduced battery capacity. Surface should be clean, pole corroded, the positive lead (FireWire) should be insulated well, or will cause self-discharge phenomenon. There should be no loose joints, ground should be solid, or increase the output impedance will reduce the output power. Then open the headlights check. Such as the bright white lights, then the battery is normal; if dark red, then the lack of electricity.
Then turn the starter. If the starter speed normal, though slightly dim lighting, but there is still enough light, then a good battery, charging more foot; If the starter seems weak, and the light becomes very dark, then the battery from over discharge, charging immediately; If connected to the starter, the light dark light, and turn off the engine immediately, then over the limit or the battery discharge plate has seriously sulfide.
If the battery fully charged using a good first day, over night and then use the power shortage will be felt, then the short circuit or the battery or serious self-discharge phenomenon.
After the initial examination, the electrolyte fluid level should be observed. If necessary, add distilled water. If confirmed the loss of electrolyte, the corresponding density of the electrolyte should be added.
For battery failure, once discovered, should be excluded. Battery case for cracks, leaks, it should remove the patch, otherwise it will lead to early battery scrap, but also severe corrosion of other automotive components; save battery power shortage, it is timely charge; exist within the self-discharge or serious curing plate Batteries should be removed for inspection. If the problem is serious and should be renewed examination.
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