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• Battery voltages 29 Apr 2005 (Forum)
  I have always checked various batteries for state of charge by measuring their voltage (when rested for at least 8 hours) using a good digital voltage multimeter. I have several graphs of voltage v. state of charge and have assumed that a battery in good fettle would have a voltage of approx. 12.6
• Any - Silver Calcium Battery 6 May 2011 (Forum)
  Hi I noticed the other day that i have a silver calcium battery. My questions are: Can i charge it using a normal battery charger? Can i top it up with usual battery water (de-ionised water)?   thanx  
• Calcium battery in a car that doesn't need one? 21 Dec 2009 (Forum)
  I have a '99 Focus that uses a calcium battery. Would there be any issues in putting the old calcium battery from this into another older vehicle that uses a standard lead acid battery, specifically a Toyota Carina?
• Battery and holiday 6 Jul 2003 (Forum)
  HI I will be away for three weeks this summer. I cannot attach a battery charger to keep the battery charged. Do the solar ones work? How much chance is there that the car will start after this time..the battery is a year old but the alarm will be activated thanks for any advice alan
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  Why doesn't my speedometer work after changing the battery? 16 Sep 2017 (Ask HJ)
  The speedometer in my Ford Ka doesn't work after changing the battery.
• Nissan Almera - Battery charge fail light 19 Apr 2015 (Forum)
  The red charge light on my Almera comes on Intermittently. The battery sometimes struggles to start the car. If I charge the battery, the light no longer comes on. I can't make up my mind whether the battery has had it, or whether the generator is intermittently failing to charge. Does the red
• Changing the battery on a modern car 2 Mar 2014 (Forum)
  It seems that with some newer models, the new replacement  battery needs registering to the car. Also, if it not replaced correctly, it can spike the electrical system. Does this mean that you cannot order a battery from your friendly suppliers and fit it yourself? You have
• Ford Mondeo - Ford Mondeo Battery Replacement 17 Jun 2012 (Forum)
  Need to replace the battery on my T reg (1999) Mondeo, looks like it's the original battery in there at the moment, a Motorcraft Superstart. I've searched the internet and RAC say this is compatible
• N/A - Gadgets that eat batteries 28 Sep 2011 (Forum)
  Can anyone explain why so many electronic gadgets which run on two AA or AAA batteries decide to stop working as soon as the battery voltage is down to 1.47 Volts? The nominal battery voltage is 1.5, brand new ones usually read almost 1.6, why do the manufacturers not design
• Mercedes-Benz SL280 W129 1997 - Charging the battery. 27 Jan 2011 (Forum)
  To overcome the problem of a low battery when the car has not been used for several weeks, I plan to fit a charging socket inside the boot so that I can recharge the battery regularly with a mains charger. Is it OK to charge the battery with a mains charger when the battery is still connected
• Fiat Uno (Again) Battery draining 11 Jul 2003 (Forum)
  any ideas???. Car has been lying for a while. Took battery out as a "jump start" didn't work. Fuly charged battery with a charger. Refitted, but still not enough power. Used jump leads and got car started. Took for a run and turned off and on a few times. Went back to car today and nothing. Battery
• Lydl offer - Battery Charger 20 Feb 2019 (Forum)
  I bought  a battery charger from Lydl model ULGD 5.0 A1. Whilst it is smart enough to detect 12 V and 6 Volt batteries it can not wake up a flat battery below 3.8 volts. Useless. Regards Peter
• Lydl offer - Battery Charger 18 Feb 2019 (Forum)
  I bought  a battery charger form Lidl model ULGD 5.0 A1. Whilst it is smart enough to detect 12 V and 6 Volt batteries it can not wake up a flat battery below 3.8 volts. Useless. Regards Peter
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  Do you need to disconnect the battery from the car to charge with a trickle charger? 17 Apr 2020 (Ask HJ)
  I'm concerned about attaching my CTEK CT5 battery charger to my cars with the battery still connected to the car in case the charger fries the ECU. I've...
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  My car's battery has failed while the car is in warranty. Why am I being charged for a replacement? 12 Feb 2021 (Ask HJ)
  The battery in my BMW has failed after 24,000 miles and the car is still in warranty. As an experienced driver, I've made sure the car has had regular...
• Micra K12 2003 - Key Fob Battery Advice Please ! 5 Jul 2012 (Forum)
  Hello,my wifes key fob battery died on her today. On opening the fob the battery fitted was a CR2016. I only had spare CR2032's in my box of bits ! Anyway the battery fitted fine and off she went. Am I right in thinking they are the same power ? And that the 32
• Morris - Calcium batteries with a dynamo equipped Minor? 9 Mar 2009 (Forum)
  I need a new battery for my '58 Minor. The price of a GM battery is very tempting, but I note it's described as 'calcium technology'. I know that calcium/silver batteries are designed for specific modern charging systems. There are no indications of special requirements in the GM parts book
• Same old battery. 15 Jul 2001 (Forum)
  While nearly breaking my back lifting the battery out of my sons car I had this thought: Car batteries have never changed in basic design for well over a 100 years, you would think by now there would be advances in battery technology to give us something smaller for cars, just look how small
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  Can listening to the radio cause a flat battery? 30 Mar 2023 (Ask HJ)
  Does playing the radio with engine switched off cause battery to go flat within 20mins?
• NIO battery swap 22 Jan 2022 (Forum)
  Did anyone watch Fifth Gear Recharge.   I showed a NIO battery station swop the EV battery automatically in 5 minutes.  The station is in Norway which by all accounts is streets ahead of the UK converting to EV by 2025.  China has these stations all over the country