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does big 3 require a high output alternator?
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<blockquote data-quote="n2audio" data-source="post: 8385350" data-attributes="member: 540940"><p>That is a long way from conclusive.</p><p></p><p>A healthy battery should be around 12.6, yes, but a DEAD battery can measure at the same voltage.</p><p></p><p>A true battery test places a load on the battery and measures its response. A strong battery will produce tons of current and maintain good voltage. A dead battery will drop to ~11 or worse.</p><p></p><p></p><p>Again - a battery at low voltage (like 11.6v) COULD be a reasonably healthy battery that just needs a good charge -- which is likely if it's still producing enough current to start your car.</p><p></p><p>If you're measuring 11.6v with the engine running that's almost certainly an alternator issue.</p><p></p><p>Even if a car has a completely DEAD battery, but a healthy alternator -- the voltage at the battery will still measure ~14v because the alternator is powering the electrical system, all the battery should be doing when the engine's running is getting charged.</p></blockquote><p></p>
[QUOTE="n2audio, post: 8385350, member: 540940"] That is a long way from conclusive. A healthy battery should be around 12.6, yes, but a DEAD battery can measure at the same voltage. A true battery test places a load on the battery and measures its response. A strong battery will produce tons of current and maintain good voltage. A dead battery will drop to ~11 or worse. Again - a battery at low voltage (like 11.6v) COULD be a reasonably healthy battery that just needs a good charge -- which is likely if it's still producing enough current to start your car. If you're measuring 11.6v with the engine running that's almost certainly an alternator issue. Even if a car has a completely DEAD battery, but a healthy alternator -- the voltage at the battery will still measure ~14v because the alternator is powering the electrical system, all the battery should be doing when the engine's running is getting charged. [/QUOTE]
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does big 3 require a high output alternator?
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