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  Is it possible that the battery in the boot of my Audi A6 is causing my son to suffer headaches? 5 Sep 2010 (Ask HJ)
  I have a 2007 Audi A6 1.9TDi saloon. My son sits in the back seat behind the driver and has complained of headaches after having been in the car for prolonged...
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  Does the top speed of an electric car drop when the battery is low? 23 May 2023 (Ask HJ)
  The top speed of my electric bike drops slightly when the battery charge is low. Does the same thing happen with electric cars?
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  How do you start a car with a dead battery? 19 Mar 2018 (Ask HJ)
  My mate's Rover 75 won't start. It keeps making a clicking sound when he turns the key and his battery has gone completely flat. It wont start and you...
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  Why is the battery always flat in my Peugeot 307? 8 Feb 2015 (Ask HJ)
  Our Peugeot 307 (2007 registration) suffers from a flat battery in the mornings. I've tried buying a new battery, but they have also gone flat. The...
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  Can you jump-start a car from the cigarette lighter? 3 Oct 2012 (Ask HJ)
  I have some questions for you about the use of jump leads. I have seen an advertisement that states you can plug them into the cigarette lighter socket...
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  I've changed the battery in the key fob - why won't the car unlock? 6 Dec 2021 (Ask HJ)
  I changed my battery in the key fob as a warning came up to change the battery. Now the car won't unlock, why is that?
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  Car battery Ah rating 6 Dec 2012 (Ask HJ)
  Having had a battery replaced less than two years ago (due to a roadside breakdown), the new one has also failed. The one that was fitted at the roadside...
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  Is Rover or battery maker Delphi responsible for battery failure after nine years? 23 Aug 2011 (Ask HJ)
  Does this win the prize for the most optimistic claim for product failure? Last week my dealer-maintained Rover 75's original manufacturer-fitted battery...
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  Ford Fiesta battery 3 Jan 2011 (Ask HJ)
  I am having a lot of problems with the battery on my R-reg Ford Fiesta Auto - they keep dying! Four in less than four years each replaced by the AA under...
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  Why is the battery always flat on my Citroen Berlingo? 21 Dec 2022 (Ask HJ)
  In June 2021 we bought a Citroen Berlingo, which had been adapted for wheelchair access, from a specialist dealer. The vehicle is used only for short runs...
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  How far do I need to drive my car to charge its battery? 17 Nov 2020 (Ask HJ)
  My husband has a 2017 Ford Kuga automatic with i-stop but won't be able to drive it for 6 months. How far do I need to drive it to charge its battery?...
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  What's causing my Ford Kuga's flat battery? 13 Dec 2016 (Ask HJ)
  I have a 2012 Ford Kuga diesel. Recently, the battery has started to go flat every 10-14 days if its stood on the driveway or only used a couple of times...
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  My battery has lasted 17 years. Is that common? 5 Nov 2020 (Ask HJ)
  This is not really a question as such but I've seen your advice that car batteries are designed to last 3-5 years. I have owned a 2003 Citroen Xsara Picasso...
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  Battery Jargon 6 Dec 2012 (Ask HJ)
  Can anyone tell me what SAE and EN on a car battery refers to? I need a 570 cca battery with 60 Ah (according to Peugeot) but have just bought a different...
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  Should you put grease on battery terminals to protect from corrosion? 15 Nov 2023 (Ask HJ)
  Should you put grease on battery terminals to protect from corrosion?
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  Stop/start error on Qashqai 1 Feb 2015 (Ask HJ)
  I have also experienced a recurring stop/start error on my 2013 Nissan Qashqai. The dealer says the journeys might not be long enough to provide adequate...
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  How do you replace the battery on a stop-start car? 24 Nov 2014 (Ask HJ)
  How do you replace the battery on a stop-start car? Can I do it myself? And if not, what are the dangers?
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  Should I disconnect my battery for winter storage? 30 Sep 2024 (Ask HJ)
  I am buying an external cover for my Porsche Cayman S for storage outside over the winter months and intend disconnecting the battery over this period. As...
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  Do mild hybrid batteries degrade after a period of storage? 31 Aug 2023 (Ask HJ)
  I am considering buying a pre reg vehicle which is a 48V mild hybrid / petrol type. There are plenty available with delivery mileage some of which are...
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  Best car for short journeys? 27 Sep 2022 (Ask HJ)
  Which is the best car for short journeys? My Ford Puma isn’t apparently driven enough to recharge so twice the battery has drained in the eight months...