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  Will my Jeep Cherokee's alarm sound if I disconnect the battery and reconnect it later? 30 Jul 2010 (Ask HJ)
  I have a 2002 4.0L Grand Cherokee. I work offshore and each time I come home my battery is flat. Until now there has been some life in the battery but...
• Vauxhall Astra J - Battery Retaining Clamp 10 Nov 2016 (Forum)
  Hello. Trying to fit a Halfords battery to my mk6 Astra. Because the new battery is a couple of millimetres taller than the standard battery, the battery retaining clamp will not locate on the retaining nut. Hence cannot clamp battery down
• Mains Battery charging 11 Sep 2006 (Forum)
  I have a heavy duty 12v tractor battery that has been allowed to run flat. When I put it on a mains battery charger the casing of the battery becomes very warm to hot even on a trickle charge. Is this normal or is the battery beyond recovery? Is their any simple way to know if the battery
• A expensive battery replacement 11 Apr 2001 (Forum)
  My friend is looking for a replacement battery for his Renault Megane Scenic diesel 1900 turbo 1998. The battery on this vehicle is under the drivers seat and must be according to Renault a Gel filled battery for safety reasons. These are very expensive but only carry a 12 month warranty. The make
• 2000 Mazda B2500 - New alternator but battery still not charging 9 Apr 2023 (Forum)
  Can anyone help me with this problem on my 2000 Mazda B2500 please. Got in it the other morning battery was too flat to turn the engine to start it. Charged the battery up and got it running but the battery light was on all the time. Put a meter on the battery with engine runnning and it stayed
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  How do I reactivate my car key after changing the battery? 30 Jul 2018 (Ask HJ)
  I changed the battery in my car key fob. How do I reactivate it now?
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  Can I use a trickle charger without disconnecting the battery 18 Oct 2012 (Ask HJ)
  My Porsche 944 S2 Driver's Manual states: "Prior to charging the battery with a 'Quick Charger', disconnect the battery to prevent destruction of the alternator"....
• Recommend a battery charger? 26 Jul 2021 (Forum)
  Hello, I'm wiondering if anyone could recommend a good but reasonably-priced battery charger? I have an old charger which is fine for my old car with a lead acid battery, but I believe they aren't suitable for AGM and EFB batteries.  I need one that will do for both as my
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  What battery charger should I buy? 29 Apr 2020 (Ask HJ)
  What is the correct type of battery charger to use for a Ford B-Max petrol engine with stop-start system?
• Various/all - Replcing stop Start car batteries 24 Oct 2017 (Forum)
  I have been reading an article about the quote" problems technicians face" when changing a stop start car  battery (either the AGM or EFB type) eg the battery has to be paired or electronically matched to the vehicles battery management system
• battery wont charge 25 Feb 2007 (Forum)
  i had a battery discharge due to a faulty alternator(it read 6 volts with a multi metre) its a 12 volt battery, ive had it on trickle charge(.6 amp) for 3 days and the traffic light indicator on the charger is still on yellow,the green ball in the battery condition indicator is still absent
• Calcium car batteries 17 Apr 2006 (Forum)
  I have a newish Focus 1.6 which is fitted with a Motorcraft Calcium battery. I was wondering if it is possible to charge this with a regular battery charger, as I've heard that this may damage Ca batteries, is this true ?
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  Do I need to charge my stop-start car's battery in AGM mode? 2 May 2020 (Ask HJ)
  I have a stop-start car and a CTEK trickle charger. The charger seems, when it is switched on, to auto select battery mode. But, being stop-start, does...
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  Garaging a car for winter - should I disconnect the battery? 8 Oct 2014 (Ask HJ)
  I own a 1995 Honda Civic, which doesn’t get used all that much. To keep the battery charged, I it out every other week, but I am now thinking of disconnecting...
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  Does charging an iPhone or playing music on it drain a car battery? 29 Jul 2019 (Ask HJ)
  Does charging an iPhone or playing music on it drain a car battery?
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  What battery should I use in my Triumph Spitfire? 21 Apr 2017 (Ask HJ)
  I have a classic but every (fairish) day use Triumph Spitfire. The battery deteriorates in reliability if left unused for a while. Should I get a standard...
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  Battery charging advice 12 Apr 2012 (Ask HJ)
  Please can you advise me if it will be okay to charge my engine battery on my Ford Transit 2.2 autoroller 200 motorhome using a 12 volt trickle battery...
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  What is the battery degradation in PHEVs? 11 Aug 2023 (Ask HJ)
  I am considering purchasing a new Lexus NX 450+ which I expect to keep for several years. If I maximise the use of the PHEV battery, it occurs to me...
• Battery replacment 23 Oct 2002 (Forum)
  My sealed for life battery has a charge indicator,it is showing black even after being charged with a battery charger [suitable for the battery].Does anyone have any thoughts on when it should be replaced thanks tonyh
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  What is the long term battery life on a BMW i3? 31 Oct 2018 (Ask HJ)
  Is there any information available yet regarding the degradation or actual battery life of the BMW i3? I drive the 94Ah range extender on a (66) plate....