Vauxhall Insignia Battery: Specs, Fitment & Common Faults

A glovebox or boot light left silently on is a genuinely common, well-documented cause of overnight battery drain on Vauxhalls — worth checking first.

Illustration for editorial purposes

Find Vauxhall Insignia Battery Here!

Opens live listings in a new tab.

OEM Part Number: 95515593

Accuracy note: genuine Vauxhall part number confirmed directly from Vauxhall Parts Direct for Mk2 (2018 onwards) — Insignia has used a genuinely wide range of case sizes (242mm to 353mm) across engines, so confirm your exact spec before ordering.

Genuine Vauxhall reference (2018 onwards)	Vauxhall OEM: 95515593
2.0 CDTi 120, standard fitment	353mm case, 95Ah, 800A (EN)
Higher-power diesel, Start/Stop	315-317mm case, AGM, 80Ah, 800A (EN)
1.4/1.6 petrol, standard fitment	242-278mm case, EFB or lead-acid, 65-70Ah

A Genuinely Common Cause Worth Checking Before Assuming Battery Failure — Vauxhall Insignia Battery

Across Vauxhall owner forums, one specific cause comes up repeatedly for a battery that mysteriously drains overnight: a glovebox or boot light that's stuck on, or whose switch has failed, silently draining the battery even with everything else in the car switched off. It's genuinely worth checking both of these directly — feel whether the bulb is warm shortly after closing up the car, which indicates it's still lit even though you can't see it — before assuming a more expensive fault.

A genuine diagnostic benchmark worth knowing: a healthy car at rest should draw well under 0.05A from the battery. If a multimeter test (connected in series between the negative terminal and its clamp) shows anywhere close to 0.3-0.5A or more, that's a genuine parasitic drain worth chasing down circuit by circuit — pulling fuses one at a time while monitoring the draw is the standard way to isolate which circuit is responsible.

If your Vauxhall has stop-start and uses an AGM battery, it's also worth knowing that a short journey genuinely isn't enough to recharge a battery that started from flat — five miles of stop-start city driving puts only a small fraction of charge back in, and starting the car with jumper leads then driving a short distance often means the battery is right back to nearly flat by the next morning. If you've jump-started the car, a proper run of 20-30 minutes at a steady speed, or better yet an overnight charge on a smart charger, is what actually restores it — not another short commute.

Vauxhall Insignia Battery: The Part Everyone Blames First, Not Always Correctly

When a Vauxhall Insignia 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.

Vauxhall Insignia Battery reference plate

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.

Vauxhall Insignia Battery: What It Does

Starting the engine and running electrical systems whenever the engine isn't turning — that's the Vauxhall Insignia'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.

Find Vauxhall Insignia Battery Here!

Opens live listings in a new tab.

Vauxhall Insignia 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 Vauxhall Battery

The same part, covered across other Vauxhall models.