2006 Chrysler Grand Voyager Car lights and gauges flicker

How many miles? Does the Check Engine light come on? Does the Battery light come on?

After charging the battery at a low rate for half an hour, remove the charger, then measure the voltage across the two posts with a cheap digital voltmeter. A fully charged battery will read around 12.6 volts. If you find closer to 11.0 volts or less, there's a shorted cell in the battery.

If the voltage is around 12.6, measure again with the engine running. It must be between 13.75 and 14.75. If it is low, holler back; we'll need to make some measurements on the two small wires on the back of the alternator while the engine is running.

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