The 12-volt battery in the Infiniti QX80 is typically located in the engine compartment on the passenger side, near the firewall and under a protective cover.
The Infiniti QX80 is a full-size SUV whose battery location can vary slightly by model year and market. This article outlines the most common placements and how to verify the exact spot for your specific vehicle, so you can perform maintenance or a jump-start with confidence.
Common battery locations in the Infiniti QX80
Use this overview to identify where to look first, and what to check if you don’t immediately see the battery in the engine bay.
- Engine bay, passenger-side area: The most common placement in US-market QX80 models. Look for a rectangular battery under a plastic cover near the firewall or strut tower.
- Engine bay, front-right corner: Some executions place the battery slightly forward within the engine compartment but still on the passenger side, making it accessible from the engine bay.
- Rear cargo area under the floor (rare): In certain markets or configurations, the 12V battery may be located in the rear cargo area under the floor panel, connected to the vehicle’s electrical system via wiring harnesses.
If you cannot locate the battery in the engine bay, consult the owner’s manual or contact Infiniti service to confirm the exact year- and market-specific placement for your QX80.
Practical steps to locate and identify the battery
Follow these steps to quickly verify the battery’s location and ensure safe handling when replacing or jump-starting the vehicle.
- Park the vehicle on a level surface and turn off the engine. Open the hood to inspect the engine bay.
- Look on the passenger side of the engine bay near the firewall for a battery under a plastic cover labeled “12V.”
- If not found there, check the front-right corner of the engine bay or consult the owner’s manual for the exact layout for your year and market.
- Should the battery be located in the rear cargo area, you’ll typically access it from beneath the floor panel in the trunk; follow the trunk liner to the battery tray.
Safety note: When handling the battery, always disconnect the negative terminal first, wear eye protection, and follow proper jump-start procedures or have a professional service technician perform the work.
Notes by model year and market
While the engine-bay location on the passenger side remains the standard for most Infiniti QX80 models, there are occasional variations by market or newer revisions. Always verify with the vehicle’s manual or a dealership if you're unsure.
Summary
For most Infiniti QX80s, the 12V battery is located in the engine compartment on the passenger side near the firewall, under a protective cover. In rare configurations or regional variants, it may be in the rear cargo area under the floor. Always check the owner’s manual or your Infiniti dealer to confirm the exact location for your year and trim.