2026 Infiniti QX80 Battery Size

What does a 2026 Infiniti QX80 battery cost?

Expect roughly $125-320 for an AGM battery in Group 27F, which is what this car takes. Over a typical 4-to-7-year service life that works out to about $18-80 a year. A cheaper flooded battery is not a valid substitute here, whatever the shelf price tempts you into: the charging system is calibrated for AGM and will cycle a flooded battery in a way it is not built to survive.

Infiniti is genuinely mixed on this: 36% of the 2015-and-newer Infiniti vehicles we hold specs for take AGM and the rest do not, so it varies by model year and even by trim. This is exactly the kind of car worth looking up rather than assuming.

See the full breakdown of what car batteries cost - by type, by make, and what the extras actually add.

This car needs the battery registered

This car came with an AGM battery, which usually means a smart charging system. Registration is most strictly required on European makes, but plenty of stop-start vehicles from other brands still want a battery reset or relearn after a replacement. Worth two minutes checking before you fit one.

How battery registration works - what it does, and how to have it done.

What Group 27F means

A BCI group number describes the battery's physical size and terminal layout, not its power. It is what guarantees the battery drops into the tray and the cables reach the right posts. A Group 27F case measures roughly 318 × 173 × 227 mm. Standard-terminal layout.

Group 27F is one of the less common sizes, at 0.5% of the vehicles we hold specs for. It is still a catalogued BCI size rather than anything exotic, but a smaller store may need to order it, so it is worth calling ahead.

Group 49 also fit this vehicle. Alternate groups share the terminal layout and fit the tray, but check the hold-down clamp still engages before you drive off - a battery that shifts is a battery that fails early.

Every vehicle that takes a Group 27F

How many cold cranking amps?

Aim for 600 CCA at minimum. Cold cranking amps measure how much current the battery can deliver at 0°F, which is the one moment a battery is really tested. The 600-750 range reflects the different batteries fitted across this vehicle's trims and options. Going above the OEM rating is safe and does no harm - the starter draws what it needs and no more, so a higher-CCA battery is not "too strong" for the car. It is worth paying for if you park outside in a cold climate, and largely wasted money if you do not. Going below 600 is the one thing to avoid, because that is where hard winter starts come from.

Can you use a higher-CCA battery?

How long it should last

An AGM battery typically lasts 4 to 7 years. Heat is what kills batteries, not cold - cold just exposes one that was already failing, which is why so many die on the first freezing morning after a hot summer. Short trips that never fully recharge it shorten its life too. Once this battery passes its third year, get it tested annually rather than waiting to be stranded.

The warning signs are worth knowing because they are easy to miss: cranking that sounds slower than it used to, headlights that dim at idle and brighten when you rev, or a car that starts fine every day until the first cold morning and then does not. A battery rarely warns you twice.

More verified specs for your 2026 Infiniti QX80

Other vehicles that use a Group 27F battery

Group 27F is a common size, so the same battery fits many other vehicles - including:

Infiniti QX80 battery by year