BMW 4 Series Battery: Specs, Fitment & Common Faults
On the 4 Series, a new battery genuinely needs to be registered with the car's computer, and coded first if the type or capacity differs.
Illustration for editorial purposes
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OEM Part Number: 61216806755
| 92Ah AGM (shared across the wider 1/2/3/4/5 Series range) | BMW OEM: 61216806755 |
|---|---|
| 80Ah AGM (M3/M4 and similar performance trims) | BMW OEM: 61217555719 |
| Note | Genuine BMW batteries use black casing for AGM and white casing for standard lead-acid — check which type is currently fitted before assuming, and have any replacement registered (coded) to the car's charging system regardless of brand. |
BMW 4 Series Battery: The Part Everyone Blames First, Not Always Correctly
On the BMW 4 Series, no single component gets blamed for a no-start more than the battery, and often that blame is justified, making it a sensible first check. But it isn't the whole story every time, so it's worth confirming before spending on a replacement that might not actually fix anything.
BMW 4 Series Battery: What It Does
Whenever the BMW 4 Series's engine isn't turning, the 12V battery is what keeps electrical systems running and handles the next start. That workload is much higher on stop-start versions, given how often the engine switches off and restarts, which is exactly why they call for an AGM or EFB battery rather than a standard type.
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A Genuinely Important, BMW-Specific Finding Worth Knowing — BMW 4 Series Battery
This is genuinely important to know before replacing this battery: if your car is fitted with an intelligent battery sensor, a new battery genuinely needs to be registered with the car's computer afterward, and coded first if it differs in type or capacity from the original.
It's also genuinely worth knowing that not every car of this model necessarily has this system fitted, worth checking the negative battery terminal directly for a small sensor module clipped to the cable.
BMW 4 Series 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 BMW Battery
The same part, covered across other BMW models.