The Odyssey uses a standard 12-volt automotive battery, typically Group Size 35 in North America.
In 2011, Honda equipped the minivan with a conventional lead-acid, maintenance-free battery designed to power the starter and electrical systems. The exact replacement size can vary by market and trim, but Group 35 is the most commonly used OEM specification for North American models. Always verify the correct size by checking the under-hood label or your owner's manual.
Battery type and specifications
Key details to identify the right battery for a 2011 Odyssey when shopping or replacing.
- Voltage: 12 volts
- Battery type: Flooded, maintenance-free lead-acid (sealed)
- Common group size (North America): Group 35
- Alternate group size (some markets): Group 24F
- Terminal configuration: Top-post terminals on most Odyssey models
Knowing these specs helps ensure correct fit and performance when replacing the battery.
Replacement and verification tips
Tips to ensure you buy the right battery and avoid common pitfalls.
- Consult the owner’s manual or the existing battery label for the precise group size and CCA rating
- Choose a 12V maintenance-free battery with the appropriate CCA for your climate (higher CCA recommended for cold winters)
- Buy from reputable brands or OEM-equivalent groups to guarantee fit and warranty coverage
- Verify that the battery dimensions and terminal layout match your engine bay configuration
Dispose of the old battery properly and keep your receipt for warranty claims.
Summary
The 2011 Honda Odyssey runs on a standard 12-volt lead-acid, maintenance-free battery. The most common replacement size in North America is Group 35, with some markets using Group 24F. Always verify the exact group size and ratings (CCA, reserve capacity) on the label or in the owner’s manual to ensure proper fit and reliable performance.