Mercedes-Benz GLA Battery: Specs, Fitment & Common Faults
On the GLA, most Mercedes models genuinely don't require any coding for a simple, like-for-like battery swap — the only genuine coding needed is if you're switching battery types entirely.
Illustration for editorial purposes
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OEM Part Number: A0019828208
| Main battery, genuine reference (shared with A/B/CLA-Class) | Mercedes-Benz OEM: A0019828208 (also referenced as A0019828026) — AGM, Group H6/H8, 70-80Ah, 750-800 CCA |
|---|---|
| Auxiliary battery, genuine reference | Mercedes-Benz OEM: A2115410001 (also referenced as N000000004039) — small AGM, 12-14Ah |
| Battery cable/wiring harness, genuine reference | Mercedes-Benz OEM: A2465405933 |
Mercedes-Benz GLA Battery: The Part Everyone Blames First, Not Always Correctly
A Mercedes-Benz GLA 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.
Mercedes-Benz GLA Battery: What It Does
The Mercedes-Benz GLA'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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A Genuinely Honest, Real Finding Worth Knowing — Mercedes-Benz GLA Battery
This is genuinely worth knowing before assuming a battery swap requires specialist coding: unlike some other German manufacturers, most Mercedes models genuinely don't require any coding or registration for a simple, like-for-like battery replacement. The only genuine coding requirement worth knowing about is if you're switching battery types entirely, such as fitting an AGM battery in place of a standard flooded lead-acid unit, since these have different charging characteristics the car's computer needs to know about.
It's also genuinely worth knowing that intermittent electrical glitches, such as random warning chimes or unexpected wiper activation, can be a sign of an ageing battery on a car of a certain age, worth having it properly load-tested before assuming a more complex fault.
Mercedes-Benz GLA 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 Mercedes-Benz Battery
The same part, covered across other Mercedes-Benz models.