2021 Infiniti QX80 Battery Size

What does a 2021 Infiniti QX80 battery cost?

Expect roughly $80-200 for a standard flooded battery in Group 27, which is what this car takes. Over a typical 3-to-5-year service life that works out to about $16-67 a year. You can fit an AGM in the same Group 27 size if you want the longer service life, and it will cost roughly $125-320 instead. It is an upgrade, not a requirement.

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.

Do you need to register the battery?

This car came with a flooded battery and no smart charging system to satisfy, so there is nothing to register. Disconnect, swap, reconnect. You may need to reset the clock and radio presets, and that is the extent of it.

What Group 27 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 27 case measures roughly 306 × 173 × 225 mm. Standard-terminal layout.

Group 27 is one of the less common sizes, at 0.7% 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 27F 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 27

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

A standard flooded battery typically lasts 3 to 5 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 2021 Infiniti QX80

Other vehicles that use a Group 27 battery

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

Infiniti QX80 battery by year