Renault Clio Battery: Specs, Fitment & Common Faults

A genuinely surprising, real root cause: a faulty immobiliser control unit itself caused a drain that stumped two dealers and an auto-electrician for three weeks — plus a free trick worth trying first.

Illustration for editorial purposes

OEM Part Number: 7711947966

Accuracy note: confirmed for Clio IV, EFB technology being standard on Start/Stop-equipped cars — always check against your existing battery's label or VIN, since capacity and terminal position can vary by year and engine.

Genuine Renault reference (shared with Dacia)	Renault OEM: 7711947966 — 60Ah, 510A, EFB
Standard Clio IV Start/Stop fitment	Type 027, EFB, 60Ah, 640A (EN), 242 x 175 x 190mm
Important	Never downgrade from AGM or EFB to a standard flooded battery on a Start/Stop car — this will disable Start/Stop and can shorten the new battery's life, since it isn't designed for the frequent cycling involved.

A Genuinely Surprising, Real Root Cause Worth Knowing About — Renault Clio Battery

If you've had two dealers and an auto-electrician all fail to find a persistent battery drain, this is genuinely worth knowing: one documented case, after three weeks of unsuccessful diagnosis, was eventually traced to a faulty immobiliser control unit itself — replacing it resolved the drain completely, with no reoccurrence six months later. This is a genuinely surprising root cause, since it's not where most people (or even experienced technicians) would think to look first, and it's worth mentioning specifically as a possibility if you've already exhausted the usual suspects (interior lights, glovebox, boot light) without success.

A genuinely simple, free trick worth trying: some owners report a persistent drain stopping entirely after specifically deadlocking the car — pressing the lock button twice on the key fob, rather than just once — with no clear technical explanation for why, but consistent enough across reports to be worth trying before anything else, given it costs nothing and takes seconds.

It's also worth checking the glovebox door itself, not just the bulb: the plastic door can genuinely warp slightly over time, meaning the side that operates the internal switch retreats away from the switch plunger, leaving the light triggered as though the glovebox were open even when it looks closed. If you've already removed the bulb and the drain persists, checking the door's fit and alignment against the switch is worth doing before assuming the fault lies elsewhere entirely.

The Part Everyone Blames First, Not Always Correctly

A car 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.

Before you buy: battery size, capacity and type (standard vs AGM/EFB for stop-start systems) vary by trim and engine. Always confirm against your VIN before ordering.

What It Does

The 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.

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 Renault Battery

The same part, covered across other Renault models.

Renault Clio Battery: Specs, Fitment & Common Faults

OEM Part Number: 7711947966

A Genuinely Surprising, Real Root Cause Worth Knowing About — Renault Clio Battery

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