Germany · Battery knowledge hub
Volkswagen uses the same broad energy-management approach as Audi: AGM or EFB batteries with a monitoring system that should be adapted to the new battery after replacement.
Select a model for generation-level battery notes
Start-stop availability depends on battery state; a weak battery often disables it first.
Electrolyte is held in glass-fibre mats between the plates. AGM batteries tolerate frequent deep cycling and high electrical loads, which is why they are fitted to many premium and start-stop vehicles with brake-energy recovery.
Replacement rule: A vehicle designed for AGM should be fitted with AGM. A flooded or EFB battery in its place is likely to wear out quickly and may trigger charging-system faults.
Read the AGM guide →A strengthened version of the conventional flooded battery with improved cycling durability. EFB is commonly specified for entry-level start-stop systems that do not need the full capability of AGM.
Replacement rule: EFB can often replace a conventional battery, and AGM can often replace EFB — but EFB should not replace AGM. The vehicle may also need to be told which type is fitted.
Read the EFB guide →Generation-level information from our vehicle database. Where a field says “confirm”, it varies by engine or trim and is checked against your vehicle.
Adapting the new battery keeps energy management accurate.
Many models with energy management should have the new battery adapted. If a different type or capacity is fitted, coding is required.
Tell us the model and year, and send a photo of the current battery if you can. We confirm the right battery before anyone sets off.
Daily, including late evenings. Out-of-hours requests are answered as technician availability allows.