12V Auxiliary Battery Specifications
This is the small 12V battery that powers the car’s electronics — not the high-voltage traction battery. Always confirm the exact part for your build with a dealer.
| Parameter | Specification |
|---|---|
| Battery role | 12V auxiliary (electronics) |
| Type designation | Type 079 (e.g. Exide 079P) |
| Type | Standard lead-acid |
| Capacity | ~53 Ah |
| Cold Cranking Amps | ~540 CCA |
| Location | Front engine compartment |
| Note | Main drive battery is sealed; confirm the 12V part with a Renault dealer |
Recommended Batteries for Renault Megane
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Frequently Asked Questions
Does the Renault Megane E-Tech have a 12V battery?
Yes, the Renault Megane E-Tech has a 12V auxiliary battery that powers electronics, lights, and the onboard computer independently of the main traction battery.
How long does a Renault Megane auxiliary battery last?
A Renault Megane 12V auxiliary battery typically lasts 3-5 years depending on usage, climate, and driving habits.
Can I replace the Renault Megane auxiliary battery myself?
While technically possible, it is recommended to have the auxiliary battery replaced by a qualified technician due to the high-voltage components in the engine bay.
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →