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Could the alternator test bench at an auto parts store be wrong?

Mar 26, 2008 by Jesse R | Posted in Maintenance & Repairs

The new alternator tests good at the store, but when it's in my car, it doesn't function properly. The battery light is on and its draining the battery. Could the test be inaccurate?
Is that a safe way of testing it? could that damage something?

not likely.you don't mention make,model, voltage regulator, grounding problem etc,,, is the amperage of the battery enough for your car! however i would say discharge problem,ie.alternator/regulater! i bet it's the latter!

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