Citroen C5 Aircross Battery: Specs, Fitment & Common Faults
On the C5 Aircross, if stop-start keeps failing despite a healthy battery, a real owner's blunt verdict on the AGM battery is worth knowing — plus a genuine, distinct drain cause.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: 600-640A
| Standard Start/Stop fitment | EFB technology, 60-65Ah, 600-640A (EN) |
|---|---|
| 1.6 Hybrid PHEV, 12V auxiliary battery | 13Ah, AGM/EFB, genuinely separate from the main starter battery and the high-voltage hybrid pack |
| Important | Any technology change (EFB to AGM or vice versa) may need the charging system reprogrammed to avoid Start/Stop or accessory faults — factor this into cost before switching. |
A Genuine, Real Owner Complaint Worth Knowing About — Citroen C5 Aircross Battery
If your stop-start has stopped working reliably despite a relatively new battery, this is worth knowing directly: one documented owner's blunt assessment, after extensive troubleshooting with their dealer, was that the AGM battery fitted to these cars is "not fit for purpose" — needing a full charge on a proper smart AGM charger roughly every two to three weeks just to keep stop-start functioning during a pattern of shorter, everyday trips, despite the battery otherwise starting the car normally. If you're finding yourself charging the battery repeatedly just to restore stop-start rather than experiencing a genuine one-off fault, you're likely not alone, and it's worth raising this directly with Citroen rather than assuming your specific battery is simply defective.
A genuinely useful benchmark worth knowing: a healthy car at rest should draw well under 50 milliamps from the battery. If a multimeter test shows anywhere close to double or triple that figure, that's a genuine parasitic drain worth chasing down circuit by circuit rather than simply replacing the battery again.
Citroen C5 Aircross Battery: The Part Everyone Blames First, Not Always Correctly
When a Citroen C5 Aircross won't start, the battery is the first suspect more often than anything else, and it's right often enough that checking it first is a reasonable move. It isn't always the actual cause though, which is worth knowing before paying for a replacement that solves nothing.
Citroen C5 Aircross Battery: Watch: Replacing It
Filmed on a C5 Aircross.
Citroen C5 Aircross Battery: What It Does
Starting the engine and running electrical systems whenever the engine isn't turning — that's the Citroen C5 Aircross's 12V battery job. If it has stop-start, it works much harder than older designs, since the engine cuts out and restarts constantly, which is exactly why it needs a specific AGM or EFB battery rather than a standard one.
Opens live listings in a new tab.
Citroen C5 Aircross 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 Citroen Battery
The same part, covered across other Citroen models.