No, Costco does not install car batteries.
While Costco sells high-quality car batteries (usually under the Interstate Batteries brand), they do not offer battery installation services, either for free or for a fee.

What Costco Does Offer

✅ Battery Sales

• Sells automotive batteries for many vehicle makes and models
• Often priced competitively with strong warranties

✅ Core Charge & Recycling

• Charges a refundable core fee (usually $10–15)
• Refunds the core charge when you bring back your old battery

What Costco Does Not Offer

• No battery installation
• No testing or diagnostics
• No removal of your old battery from the vehicle

You’ll need to install the battery yourself or take it to a local shop or mechanic for professional installation.

Final Thoughts

No, Costco doesn’t install car batteries—even if you buy one from them.
They offer great prices and warranties, but you’ll need to handle installation separately. If you’re not comfortable doing it yourself, many local auto shops, parts stores (like AutoZone or Advance Auto), or service centers like Valvoline or Pep Boys offer battery installation.