My battery light flashes up intermittently - any idea why?

I have a 2007 Honda Civic 2.2 diesel. My battery lights flash up intermittently until I accelerate, then it goes off. The battery light isn't illuminated as long as I keep the main lights on. Any ideas what the issue is?

Asked on 19 October 2019 by Confused.

Answered by Honest John
Your battery is a bit low. The light goes out once the alternator gives it a bit of a charge. Putting the lights on tells the alternator to supply more charge to the electrical system generally.
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