Facing a hybrid battery issue can be stressful, but understanding exactly what you are paying for helps take the mystery out of the repair bill. As of 2026, you can generally expect to pay between $2,300 and $3,500 for a genuine OEM replacement battery assembly, depending on your specific model and local labor rates.
What is the IMA Battery?
The heart of your vehicle’s hybrid system is the IMA, or Integrated Motor Assist. Unlike a standard car battery, the IMA battery is a high-voltage pack located behind the rear seats. Its primary job is to provide extra power during acceleration and to capture energy through regenerative braking. It is designed to work in tandem with your gasoline engine, not replace it entirely.
12V Battery vs. IMA Battery
It is vital to distinguish between your standard 12-volt (12V) battery and the high-voltage IMA battery.
The 12V battery under your hood powers the “normal” parts of your car, such as your radio, lights, and power windows. If your car won’t start or you notice odd electrical glitches, it is often just a failing 12V battery, which is significantly cheaper to replace (usually under $200). Always have your 12V battery tested first before assuming your expensive IMA battery has failed.
Understanding the “Core Charge”
When you see a price quote, you might notice an extra fee called a core charge (or core deposit). This is a refundable deposit—often ranging from $100 to $300—added to the price of the part.
Manufacturers include this fee to encourage you to return your old, depleted battery. Once you return your old unit to the dealer or shop, they send it back to be professionally recycled or remanufactured. Once the retailer receives your “core” (the old battery), they refund that deposit back to you.
Warranty and Long-Term Coverage
In the United States, Honda covers the high-voltage hybrid battery for 8 years or 100,000 miles, whichever comes first, against manufacturing defects and excessive degradation.
If your vehicle is nearing the end of this period, check with your local dealership to have the battery health tested. If the dealer determines the capacity has dropped below factory specifications while under warranty, the replacement should be covered at no cost to you.