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Want to know what a system voltage low means - Cars & Trucks

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ALL modern cars and motorcycles hate low voltage, worst thing you can to to a computer. Your charging system on a car /bike/mower all generally produce 13.5-14.5V from alternator. Good battery will show 12.6-12.8V at rest. Slightly lower will usually still start a vehicle such as atv, motorcycle, but current is the key. If you see your lights dim when you try to start your vehicle it's a sign of a weak battery or corroded connections. Try cleaning connections to your battery, check belt on your alternator to see if it's tight, check acid level in your battery if it's lead acid.

Posted on May 12, 2017


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Posted on Jan 02, 2017


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Replace the Alternator and battery as indicated by standard voltage output tests under load.

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