Volkswagen Golf Battery: Specs, Fitment & Common Faults
A genuine, well-documented VW Group requirement: the Golf's replacement battery needs to be "coded" to the car's Gateway module — plus which of the two batteries eTSI models actually need.
Illustration for editorial purposes
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OEM Part Number: AFB096
| Case size / type | H6 / Type 096 (also referenced as AFB096) — the most common size for Start/Stop Golf Mk8 models |
|---|---|
| Confirmed fitment, 2.0 TDI GTD | 70Ah, 760A (EN), EFB technology |
| Smaller petrol variants | Often H5 / Type 027, typically 59-60Ah, EFB — confirm before ordering as this differs from the H6/096 fitted to larger-engined cars |
| Higher-spec Start/Stop cars | AGM technology (rather than EFB) is used on some trims — check your existing battery's label for "AGM" or "EFB" before buying a direct replacement |
Confirmed: Most Golfs Genuinely Need the Battery "Coded" After Replacement — Volkswagen Golf Battery
This is worth understanding before assuming a simple swap is the end of the job: VW Group vehicles with a Battery Management System (essentially any Golf with stop-start, which is the large majority) need the new battery's details — capacity, chemistry, and serial number — registered to the car's Gateway module, a process usually called battery coding or registration. Skip this, and the car's charging strategy keeps assuming the old, worn battery is still fitted, which can lead to overcharging or undercharging the new one and shortening its life prematurely. This can genuinely be done with widely available aftermarket tools like VCDS or OBDeleven, not exclusively at a VW dealer with their ODIS system — worth knowing if you're comparing quotes or considering doing it yourself.
Watch: Replacing and Registering the Battery
This covers the physical swap and the battery adaptation step referenced above. The exact menu steps in your coding tool may differ slightly by software version, but the underlying process is the same.
Volkswagen Golf Battery: The Part Everyone Blames First, Not Always Correctly
A Volkswagen Golf that won't start gets blamed on the battery more often than any other component, and it's right often enough to make that assumption a reasonable first check. But it's not always the actual cause, which is worth knowing before spending money on a replacement that doesn't fix anything.
Two Batteries on eTSI Models — Know Which One You Need
| 12V AGM battery (all versions) | Standard 12V type — confirm size/rating against your existing battery or VIN |
|---|---|
| 48V mild hybrid battery (eTSI only) | Not a standard retail part — typically £850–£1,300 fitted at a VW dealer, including the belt-driven starter-generator if that also needs replacing |
On eTSI models specifically, a weak 12V AGM battery can cause cascading errors throughout the 48V mild hybrid system, triggering warning lights that look like a bigger problem than they are. It's worth having the 12V battery tested first — above 12.4V with the engine off is considered healthy — before assuming a fault lies with the more expensive 48V system.
Volkswagen Golf Battery: What It Does
The Volkswagen Golf's 12V battery provides the power needed to start the engine and runs electrical systems when the engine isn't turning. On cars with stop-start technology, the battery works much harder than on older designs, since the engine switches off and restarts far more frequently — which is exactly why these cars need a specific AGM or EFB battery type rather than a standard unit.
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Volkswagen Golf Battery: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Battery Guide for warning signs to watch for, confirming fitment against your VIN, and matching the right technology (standard, EFB, AGM) when buying aftermarket.
More Volkswagen Battery
The same part, covered across other Volkswagen models.