How can I tell the age of a car battery?
I want to know if the battery that's fitted to my 2015 Audi is original to the car, as a replacement is very expensive. It does not have an obvious date stamp on the top or sides, but I've been able to photograph the label on the top and my phone has deciphered the QR code. Would this data enable anyone in the know to determine how old the battery is?
Asked on 2 April 2024 by Andy Lee

We would expect the battery to have a serial number, whether this is stamped elsewhere on the battery or within the data taken from the QR code. Typically the two characters in a battery serial number refer to the year of manufacture from 0 to 9 and is a letter referring to the month of manufacture from A to L corresponding to January through December.
If you car was manufactured in 2015 we would not expect it to be on its original battery, as they typically are past their best by the time they are five years old.
If you car was manufactured in 2015 we would not expect it to be on its original battery, as they typically are past their best by the time they are five years old.
Similar questions

My wife needs to make bi-monthly 500+ mile return journeys and does not like the idea of being dependent on public chargers so cannot be persuaded to use an EV. A PHEV can be used for both long journeys...

I will not be using my Honda CR-V hybrid for a month. In order reduce the chance of theft I would like to store the 12v battery in my secure garage (on a CTEK charger). Will I be able to centrally lock...

We want to fit a tracker to our WW2 Willys Jeep in case it gets stolen. It is particularly exposed so we think a battery powered independent unit would be a good option - one that is not wired to the vehicle...