Costco Car Battery Replacement Cost

Costco Battery Price

Costco sells Interstate batteries only, at roughly $90 to $180. You need a membership. Confirm the price for your car on costco.com.

Costco Warranty and Core Charge

• Warranty: 36-month prorated warranty (since mid-2023).
• Core charge: typically about $15, refunded when you return the old battery.
• Installation: not offered. Our calculator treats a Costco purchase as battery only.

Based on prices checked October 2026 from Costco Guides (third-party). Confirm the current price with the store. All sources.

Getting a Costco Battery Fitted

Fit it yourself with our DIY guide, or pay an independent shop. Independent labour is typically $40 to $75, and Walmart charges $15 to install a battery bought elsewhere, subject to its policy. Compare in the retailer price comparison and see the Walmart page. Get a full total on the car battery replacement cost calculator.

Why Costco Is Often the Cheapest Battery and Not Always the Cheapest Total

A low sticker price is only half the story. Costco does not install batteries, so you must fit it yourself or pay someone. If you pay an independent shop about $40 to $75 for labour, the cost moves up by that amount, and the calculator above adds that labour automatically unless you tick DIY. For people who can fit a battery safely, Costco's price and warranty make it one of the best values. For everyone else, free fitting at Walmart or a parts chain can come out cheaper.

How Buying a Costco Battery Works

1. Find the right battery for your car using Costco's lookup or the label on your old battery.
2. Buy it in the warehouse; you need a membership.
3. Pay the core charge, which is refunded when you bring the old battery back.
4. Fit the battery yourself, or take it to a shop. Our DIY guide covers the steps.
5. Return the old battery for your core refund and keep your receipt for the warranty.

The Warranty

According to a third-party guide, Costco moved to a 36-month prorated warranty in mid-2023. A prorated warranty gives a credit that shrinks over time instead of a free replacement, so work out what it is actually worth with our warranty calculator. For example, a $150 battery at 24 months into a 36-month prorated period is worth about $50 in credit. We could not verify the terms on costco.com, which blocks automated checks, so confirm in store.

Interstate Batteries at Costco

Costco sells Interstate-branded batteries, so you are buying a name brand at warehouse pricing. Check the group size and type listed for your vehicle, and ask the staff whether your car needs AGM or EFB.

Costco vs Walmart

The two have overlapping price ranges: $90 to $180 at Costco and $80 to $190 at Walmart on our third-party figures. The big difference is fitting. Our blog post on Costco vs Walmart car batteries compares them side by side, and the Walmart page details its fitting policy.

Tips for Getting a Costco Battery Fitted

• Ask a friend or family member who has done it before.
• Call an independent shop first and ask what they charge to fit a battery you supply.
• Check whether Walmart or a parts chain will fit a battery bought elsewhere; Walmart's fee is $15 per our source, but policies vary by store.
• Do not buy if your car needs registration and you cannot get it done.

Independent Guide

This is an independent guide and is not affiliated with Costco. Prices are third-party ranges checked in October 2026; confirm on costco.com.