Hummer Key Fob Batteries & How to Replace Them

This page is your one-stop shop for changing Hummer key fob batteries. To find out which device you have, what battery it takes, and how to open it—just scroll down and select your Hummer model from the “Hummer Vehicle Models” list. If you click “H3,” for example, you will be taken to a page with easy-to-follow video tutorials for every Hummer H3 key fob used over the years.

Alternatively, you can stay on this page and scroll down a bit to see video tutorials for all possible Hummer key fobs. Just find the video that shows your device in the thumbnail and click to play. Our video tutorials show you everything you need to know to replace your battery at home, without any special tools or experience.

PICTUREKEYYEARSBUY BATTERY
Classic2008 - 2009Check on Amazon
Simple2008 - 2009Check on Amazon
Oval2006 - 2010Check on Amazon
Rounded2003 - 2007Check on Amazon

Hummer Vehicle Models

How to change the battery in the “Classic” Hummer key fob

Hummer H2 Key Fob Battery Replacement (2008 - 2009)

This is the battery you need for the Hummer “Classic” key fob:

Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

Check Price on Amazon

How to change the battery in the “Simple” Hummer key fob

Hummer H2 Key Fob Battery Replacement (2008 - 2009)

This is the battery you need for the Hummer “Simple” key fob:

Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

Check Price on Amazon

How to change the battery in the “Rounded” Hummer key fob

Hummer H2 Key Fob Battery Replacement (2003 - 2007)

This is the battery you need for the Hummer “Rounded” key fob:

Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

Check Price on Amazon

How to change the battery in the “Oval” Hummer key fob

Hummer H3 Key Fob Battery Replacement (2006 - 2010)

This is the battery you need for the Hummer “Oval” key fob:

Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

Check Price on Amazon

Frequently Asked Questions

What battery goes in my Hummer key? Hummer keeps it simple. All Hummer key fobs use the same CR2032 batteries. These 3v coin batteries last a long time and are inexpensive. You only need one battery to power your device. Click here to check the price of CR2032 batteries on Amazon.

Where can I buy Hummer key fob batteries? You can find CR2032 batteries at hardware stores, electronics stores, and hobby stores. However, the most convenient way to get your hands on these batteries is to get them online. This way, you get a great price without having to shop around. If you would like to get your Hummer key fob batteries online, click here to check the price on Amazon.

How much does it cost to replace a Hummer car key? Fixing your key fob at a dealership will cost you significantly more than doing it yourself. If the only problem is a dead battery, you can order a new battery on Amazon and follow one of our tutorials to change it yourself. The battery only costs a couple of bucks and the entire process takes about five minutes. However, if your key fob is broken or defective, you may need to replace the whole thing, which will be more expensive.

How do you change the battery in a 2008 Hummer key fob? It depends on which key fob type you have. Some model years have multiple key fobs in use simultaneously—there is no one correct answer here. To see how to change the battery in your Hummer key fob, scroll up and find the video that has your device in the thumbnail. That video will show you the step-by-step process.

How do you change the battery in a Hummer H3 key fob? Most car models have multiple possible key fobs depending on the year and trim. To see how to change the battery in your specific H3 key fob, scroll up to the top of the page and click on “H3” from the “Hummer Vehicle Models” list.