The gasoline-powered 2017 Mitsubishi Outlander uses a conventional 12-volt lead-acid battery for starting and electrical systems. The plug-in hybrid Outlander PHEV adds a high-voltage lithium-ion traction battery for its electric drive (about 12 kWh), while still relying on a 12-volt auxiliary battery for normal vehicle operations.
These differences matter because the two powertrain configurations share some components but rely on different battery technologies and roles within the vehicle. This article explains the battery setup for the 2017 model year and how to identify which version you have.
Two powertrain configurations in the 2017 Outlander
To clarify the question, it helps to separate the gasoline-only version from the plug-in hybrid version. The gasoline model uses a traditional 12V battery, while the Outlander PHEV combines that 12V system with a larger high-voltage battery used for electric driving.
Below is a concise outline of the battery systems used across the 2017 Outlander lineup.
- Gasoline-only Outlander: 12-volt lead-acid starting battery for engine cranking and vehicle electronics.
- Outlander PHEV: High-voltage lithium-ion traction battery (approximately a 12 kWh pack) powers the electric motors, with a separate 12-volt auxiliary battery for standard systems.
In summary, the 2017 Outlander lineup uses a traditional 12V battery for the gasoline model, while the plug-in hybrid version incorporates a larger lithium-ion battery for its electric drive in addition to the 12V system.
Maintenance and replacement considerations
For the 12V battery in both variants, routine checks (terminals for corrosion, electrolyte state where applicable, and overall charge) and timely replacement (typically every 3–5 years depending on climate and usage) help prevent issues.
Gasoline Outlander specifics
The gasoline-only model relies on a standard 12V lead-acid battery. When it starts to show signs of weakness—slow cranking, dim lights, or electrical glitches—it’s usually the 12V battery that needs attention and replacement.
Outlander PHEV specifics
The Outlander PHEV’s high-voltage traction battery is lithium-ion and is not serviced by the average owner. Its health is typically monitored by the vehicle’s onboard systems, and any significant degradation or failure is addressed by a dealership under warranty or service programs. The 12V auxiliary battery remains serviceable in the same way as the gasoline model, supporting electronics and base systems.
What to know when buying or maintaining
When evaluating a 2017 Outlander, confirm which powertrain you have to understand the battery setup and maintenance needs. A dealer or the owner’s manual can verify whether the vehicle is the gasoline or PHEV variant, which in turn determines whether you’re dealing with a 12V lead-acid battery alone or in combination with a high-voltage lithium-ion pack.
Summary
In short, the 2017 Mitsubishi Outlander comes in two battery configurations: the gasoline model uses a standard 12-volt lead-acid battery, and the Outlander PHEV uses a high-voltage lithium-ion traction battery (around 12 kWh) for its electric drive, plus the conventional 12-volt system for everyday vehicle functions. Understanding which variant you own will clarify which batteries are involved and how they should be maintained.