Start the vehicle, undo one of the battery cables. if the vehicle dies it is most likely the altenator, if the vehicle keeps running then the battery is most likely the culprit
Testimonial: "There's no way to contact you directly! I did that and was told it may not be right for these new systems and could you confirm if that is the best?"
it is not going to hurt the system do it quick and all will be fine. Make sure the terminal you pull off does not touch the car in anyway. it is the same story as jump starting a car, I jump start new cars everyday and have never had a problem.
you can also use a volt meter. Check the battery voltage with the engine off, it should read 12-13 volts, if the altenator is working it should increase the voltage with the motor running to the upper area of 13 volts. maybe 14 as long as it is greater than when it is not running. If the voltage drops or there is no increase, the altenator is not working correct.
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