How Long Should A Battery Last On A Modern Car?
Monday, 23. September 2019
Many new cars, without most drivers knowing it have a battery recharging system fitted that operates in a similar way to KERS on an F1 motor racing car. This happens because with so much draw on the battery in a modern car with climate control, audio systems, sat navs and other big users of the electrical system, including firing up the car, more power generation is required than a traditional car generator.
With so much charging and draining going on the batteries must be much more sturdy than the batteries fitted to my early cars so it’s important that you have fitted the correct quality of battery when changing it. A situation understood by an Audi TT driver who bought a used car for use mainly at the weekend.
So he bought a replacement battery from the RAC and got them to fit it. All was fine but after about 18 months and well within the warranty period the battery failed. He called out the RAC, costing him £30 as he wasn’t a member but they said if the battery was faulty they would replace the battery and refund the call-out fee.
However, when the engineer inspected the battery using their test equipment it said the battery was faulty but the diagnostic machine told the engineer not to replace it. RAC Customer Care responded to the driver’s complaint, as explained by Whatcar, in a letter that said the most probable cause of the failure was lack of use which breached their warranty as being poorly maintained.
The driver, knowing that lack of use could still drain the battery and over 18 months he had only driven 2,030 miles he put the battery on trickle charge when the battery was not in use. This was explained to Whatcar who stepped up and contacted the RAC.
In the end the driver was reimbursed the callout and the cost of a new battery but as we expect people to use their cars less and use public transport more surely the manufacturers should look at this situation and make batteries that hold their charge better and ensure that unnecessary systems shut down when the car is parked.
In the meantime, whether it’s a warranty, insurance policy or finance agreement it’s important to read them and understand all the terms and conditions. This is something that I’m campaigning for, better pre-contract information. The driver should have been made aware of this key piece of information before taking the battery.
By Graham Hill
