How to Check if Car Battery is Under Warranty: A Step-by-Step Guide

June 12, 2024

Checking whether an Interstate Battery is covered under warranty involves several steps to verify the purchase date and warranty status. The simplest way to ascertain this information is by checking the purchase receipt, which typically contains the date the battery was bought and the warranty details. Customers are advised to keep the receipt in their glove compartment for easy access.

Cross-Referencing Warranty

Once you have the purchase date, it can be cross-referenced with the information available on the Interstate Batteries warranty page at This step helps determine if the battery is still under warranty.

If the Receipt is Lost

If the purchase receipt is unavailable, the product information label on the battery can provide useful information. By opening the hood and locating the battery, you can find this label on top of the battery. Dealers often indicate the purchase date by punching out or ripping off part of this label.

Date Dot Sticker

Another way to estimate the battery's purchase date is by checking for a small date dot sticker usually located on the top or side of the battery. This sticker displays the date the battery left the warehouse for the dealer, which can help in approximating the purchase date. However, it might not be an exact match.

Removing the Battery

If the date dot is not visible, it may be necessary to remove the battery. Make sure to use the necessary tools, including safety equipment like gloves and eye protection, as well as a wrench or ratchet. Follow these steps to remove the battery:

  1. Remove any retaining pieces such as metal or plastic bars or wedges.
  2. Loosen the nut on the negative terminal, then disconnect and set aside the cable.
  3. Loosen the nut on the positive terminal, then disconnect and set aside the cable.
  4. Remove the battery, keeping in mind that it is heavy.

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Date Dot and Thermal Heat Stamp

Once the battery is removed, locate the date dot to estimate the warranty coverage period. If the date dot is not useful, you can look for the thermal heat stamp, usually found on the back of the battery. This stamp includes a code indicating the date of manufacture. Use the provided chart to decode the first two letters or numbers to determine this date, which helps in ascertaining the warranty status.

Reinstalling the Battery

After checking the necessary details, reinstalling the battery involves reversing the removal steps. Reconnect the positive terminal first, followed by the negative terminal, and tighten the nuts. Finally, secure the battery with any retaining pieces removed earlier.

Seeking Additional Help

If you encounter any difficulties or need help interpreting information, visit your local Interstate Batteries dealer, contact the Consumer Affairs team, or reach out via social media.

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