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V36 Battery & Brake Warning Light ON!!

Hey guys,

So, I was on my way to work this morning, then slowing down, my car kind of jerked/hesitated and then battery light came on. Then drove for a few seconds then saw the Brake light come on as well. I was doing a little bit of research and it says that the alternator might be on its way. Can anyone confirm? Also they've said that it might be grounding issue.

How do I check if I have a bad alternator? Battery is only about a year old.

Thanks in advance guys 

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Typical behaviour of most vehicles. Put a voltmeter/multimeter across your battery terminals while the car is running and check voltage. You should be seeing around 14.4V. If it's under 14V, I'd be concerned. If you find it doesn't output much more when you're revving at around 2500RPM, it's gone for sure.

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