All Things Mk5 > How to Guides / Troubleshooting

Battery is shot - Hows this?

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rich83:
^^^ IIRC it was the highest spec battery at the time I bought it. Might still be. Either the varta or the Bosch s5 007 ( i think) are decent

xjay1337:

--- Quote from: USBulldog on July 13, 2015, 02:14:53 pm ---Also just starting a car doesn't charge a battery, you have to drive it over a certain speed and for a certain period of time to get the alternator to put out a charge over the current status quo.

--- End quote ---

Not quite true.
My battery voltage is 13.7 at idle, doesn't really change much when driving/reving - the alternator is supply battery voltage at this point. Although you will need to run the car for 5-10 minutes to gather up the amount of charge lost by starting the car if that makes sense.

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