Online Only - 10% Off Sitewide [ Use CODE CDP10011 ] - View Details
Your vehicle is equipped with 2 types of batteries: Auxiliary (for start/stop and other systems) and Primary (for starting).
These batteries are designed to run as a backup to the starting battery and provide power to some essential equipment like engine start/stop and other systems that require power while the engine is off to put less strain on the main battery and alternator.
If you can't find or no longer have your car's owner's manual to look up the location of the batteries, you could also get your hands a little dirty and look in the car. Auxiliary batteries are not always as easy to find as your main starting battery. It could certainly be under the hood but it could also be under a seat, behind the glovebox or somewhere in the trunk.
Showing 11 of 11
Showing 11 of 11
We've found other products that fit your selection. Shop Related Products
Fits your vehicle as:
Primary Battery or Auxiliary Battery
Fits your vehicle as:
Primary Battery or Auxiliary Battery
What Our Experts Are Saying
Trust us, this one delivers. Get reliable starting power with the Duracell Ultra Group 78 flooded car battery. With 700CCA, this dependable battery is engineered to perform in all weather from America’s most trusted brand.
Fits your vehicle as:
Primary Battery
What Our Experts Are Saying
You’ll notice the high cold cranking amps the second you start it up. The Duracell Ultra Gold Car Battery Group 34/78 | 800CCA is a high-performance Car Battery built for reliable starts, dual terminal flexibility, and long-lasting power in tough conditions.
High Performance
Fits your vehicle as:
Primary Battery or Auxiliary Battery
What Our Experts Are Saying
Packed with high cold cranking amps, it’s ready for tough conditions. Unleash relentless performance with the X2Power Group 78 premium AGM car battery. Delivering 850 CCA, it powers high-demand vehicles and electronics with unmatched durability—exclusively at Batteries Plus.
Fits your vehicle as:
Primary Battery
High Performance
Fits your vehicle as:
Primary Battery
What Our Experts Are Saying
High cold cranking amps mean dependable starts every time. The X2Power Car Battery Group 34/78 | 850CCA delivers premium AGM power with deep cycling capabilities, vibration resistance, and superior starting performance—only at Batteries Plus.
High Performance
Fits your vehicle as:
Primary Battery
What Our Experts Are Saying
Trust us, the high cold cranking amps make all the difference. The X2Power Car Battery Group 34 | 850CCA is a premium AGM option built for extreme performance, deep cycling, and long-lasting power—available exclusively at Batteries Plus.
Fits your vehicle as:
Primary Battery
Fits your vehicle as:
Primary Battery
High Performance
Fits your vehicle as:
Primary Battery
What Our Experts Are Saying
You’ll notice the high cold cranking amps the second you start it up. Get powerful, reliable starts every time with the Optima Red Top 800CCA AGM car battery, built for group size 34/78 vehicles with dual terminals and rugged SPIRALCELL technology.
High Performance
Fits your vehicle as:
Primary Battery or Auxiliary Battery
What Our Experts Are Saying
With high cold cranking amps, this battery delivers serious starting power. The Optima Red Top Car Battery Group 78 | 800CCA delivers dependable starting power and long-lasting performance for cars, trucks, and SUVs with standard electrical demands.