Repairs
04
Feb
By Ishmael, IS Auto Repairs
Alternator vs battery: how to tell which is bad
Both cause no-starts, but the fix is different.
Simple test
With the engine running, a healthy charging system shows about 13.8–14.6 volts at the battery.
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Battery signs
Slow crank but runs fine once started.
Alternator signs
Battery light on, dimming lights, car dies while driving.
Need help with this in Kingston?
Our Alternator service covers it. Request a Service, WhatsApp or call +1 (876) 292-1212 for a clear quote.
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