Contents

20 Best Changing The Battery In A Honda Odyssey Key Fob of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best Changing The Battery In A Honda Odyssey Key Fob of 2023. Check our ranking below.

2,821 Reviews Scanned

Rank No. #1

(2 Pack) CR2032 2032 Remote Key FOB Battery OEM Replacement Compatible with Honda 2013-2021+ Accord Civic Odyssey CR-V HR-V Fit Pilot Prox Smart Key Fob fits with FCC ID KR5V2X - (W. Instructions)

Bundle of Two (2) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (3, 4, 5, 6, or 7 button) Smart Key remote fobs.
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #2

CR2032 2032 REMOTE KEY FOB BATTERY OEM Replacement Compatible with Honda 2013-2021+ Accord Civic Odyssey CR-V HR-V Fit Pilot Prox Smart Key Fob fits with FCC ID KR5V2X - (W. INSTRUCTIONS)

Bundle of One (1) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (3, 4, 5, 6, or 7 button) Smart Key remote fobs.
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #3

Panasonic CR1616 3.0 Volt Long Lasting Lithium Coin Cell Batteries in Child Resistant, Standards Based Packaging, 2-Battery Pack

LONG LASTING PERFORMANCE: Panasonic CR1616 3.V batteries are engineered to provide reliable, long-lasting power
CHILD RESISTANT SAFETY STANDARDS BASED PACKAGING: These Panasonic CR1616 batteries and packaging meet or exceed IEC 60086-4, ANSI c18-3m part 2, and UL 1642 compliance standards
LONG STORAGE LIFE: Our CR1616 batteries maintain power up to 8 years when unused and properly stored
DEPENDABLE POWER IN EXTREME TEMPERATURES: These CR1616 batteries are reliable in a wide range of operating temperatures (14°F to 140°F)
POWERFUL CR1616 BATTERIES: 3. 0 V nominal voltage

Rank No. #4

(2 PACK) CR2025 2025 Compatible with Honda and Acura Remote Key Fob Battery Replacement Original OEM (Bundle with Remote Opening Tool) fits 1997-2013 Accord Civic CR-V Odyssey CL RL Integra MDX TL Etc

BUNDLE OF 2 PACK BATTERY - with remote opening pry tool to assist in opening remote without causing damage or scratches and to help remove battery from battery compartment – (bundle of 2 items, total 3pcs)
ORIGINAL OEM Battery as provided by Honda and Acura for 1997-2013 3 and 4 button keyless remote key fobs. Avoid a service appointment for a battery replacement. Battery replacement is simple and remote reprogramming is not required
REMOTE OPENING TOOL INCLUDED – Dual purpose opening tool included to open the battery cover (without scratching or damaging your remote) and to remove the battery
NOTE: NOT COMPATIBLE WITH HONDA OR ACURA INTEGRATED REMOTE HEAD KEYS– Original battery provided for 3 or 4 button remote fobs without integrated keys. Use Amazon Part Finder to verify that this is the correct battery for your specific remote
INSTALLATION VIDEO PROVIDED WITH PURCHASE – We offer an easy-to-follow detailed instructional video demonstrating the battery replacement procedure

Rank No. #5

CR1616 1616 Remote Key FOB Battery OEM for 2003-2015 Replacement for Accord Civic CR-V Fit Insight Acura TL TSX ZDX (W. FCC ID’ OUCG8D-380H-A, MLBHLIK-1T, KR55WK49308, N5F-S0084A CWTWB1U545)

[Buncle of CR1616 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 2pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as those provided by OEM original manufacturer in all (3 or 4 ROUND button) remote head key fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #6

Key Battery Replacement for Honda Odyssey (2014-2022 Odyssey Remote Battery CR2032 Pack of 2) Powered by BatteryGuru

Compatible with 2014-2022 Honda Odyssey.
Includes two (2) original BatteryGuru CR2032 3V car key batteries.
Avoid a service appointment for a replacement battery. This is an easy replacement and install.
The smart key fob remote itself is not included. Please refer to your owners manual to determine which battery your key fob uses and how to replace it.

Rank No. #7

(2 PACK) CR1616 1616 REMOTE KEY FOB BATTERY OEM for 2003-2015 Replacement for Accord Civic CR-V Fit Insight Acura TL TSX ZDX Case Shell OUCG8D-380H-A MLBHLIK-1T KR55WK49308 N5F-S0084A CWTWB1U545

Bundle of Two (2) CR1616 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as those provided by OEM original manufacturer in all (3 or 4 ROUND button) remote head key fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #8

Rome Tech Car Key Fob CR2032 Batteries Replacement Compatible with Honda Civic 2013-2021,CR-V 2013, 2015-2022,Odyssey 2013-2022, Pilot 2013-2022 - CR 2032 Battery for Key Fob-CR2032-1-Pack

Rome Tech CR2032 battery for car remote key compatible with Honda Civic 2013-2021, CR-V 2013-2022, Odyssey 2013-2022, Pilot 2013-2022. Please, check your car model and the year before purchasing! Match your key fob with image 2 to confirm that the RTB CR2032 3V lithium battery suits your crucial fob.
RTB CR2032 batteries are designed to last long. Enjoy long CR2032 lithium 3V coin battery life without worry. Use this time with pleasure. Package Includes 1 (One) OEM CR2032 battery
CR2032 lithium 3V coin battery is reliable and provides consistent power to your key fob. This means you can trust CR 2032 battery for key fob to work when you need it most, ensuring you always have access to your car.
CR2032 lithium battery is designed to withstand extreme temperatures, whether hot or cold. Battery CR2032 3V lithium cell robust construction makes it resistant to vibration and impact, ensuring it can withstand the rigours of daily use.
Rome Tech multifunctional CR 2032 3V battery for key fob can be used for various electronic devices such as watches, fitness trackers, calculators, digital cameras, remote controls, and many more.

Rank No. #9

Panasonic CR1616 3.0 Volt Long Lasting Lithium Coin Cell Batteries in Child Resistant, Standards Based Packaging, 1-Battery Pack

Panasonic CR1616 batteries are engineered to provide reliable long-lasting power
Reliable in a wide range of operating temperatures (14°F to 140°F)
These Panasonic CR1616 batteries and packaging meet or exceed IEC 60086-4 2019 ANSI c18-3m part 2-2019 and UL 1642 compliance standards
Long shelf life of up to 8 years
3.0 V nominal voltage

Rank No. #10

(2 PACK) CR2032 2032 Remote Key Fob OEM Battery for Smart Key Keyless Fob fits 2013-2021 for Honda Accord Civic Odyssey CR-V HR-V Fit Pilot Clarity with FCC ID: KR5V2X, CWTWB1G0090, etc Proximity Prox

[Bundle of Two (2) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same battery as provided by OEM original manufacturer in all (3-7 button) SMART KEY remote fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist With Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #11

LiCB 5 Pack CR1632 Battery, Long-Lasting & High Capacity CR 1632 Lithium Batteries for Car Remote & Key Fob,3V Coin & Button Cell

SAFE AND RELIABLE: LiCB Since 2006,Specialize in Battery 12 Years. CR1632 Button Coin Cell Tested under Strict Quality Control Standards. CE and ROHS Certified. Grade A cells CR 1632 Car Remote Batteries Ensure Longer Battery Life and Long Lasting Power.
Long-Lasting AND COST-SAVING:Get the 5 PCS Exact Fresh CR1632 Battery, Have Full 3 Volts Charge, 3 Years Shelf Life
Safety AND LEAK FREE -- Zero Mercury LiCB CR1632 Batteries Offer Premium Performance in a Variety of Devices. LiCB Batteries are Designed not to Leak in Devices During Their Usage and for up to 3 Years after They are Left in a Device.
MULTIPLE COMPATIBILITY : Equivalent to other Brand Models, Like CR1632 , BR1632 , DL1632 , ECR1632 ,1632 , KCR1632 , LM1632 , DL 1632 and Works Perfect for Remote Control, Watch, Calculator,Electronic Notebook,Thermometer, Mobile game.
What You Get: 5 PCS CR1632 Batteries in Exact Blister Pack.18-month Warranty and Friendly Customer Service.

Rank No. #12

(2 Pack) CR1620 1620 Remote Key FOB OEM Replacement (2013-2020) for Honda Accord Civic Crosstour Fit Remote Fob Case Shell Cover with Tool (FCC ID: MLBHLIK6-1TA 1T and P/N’s: 35118-T2A-A60, TY4-A00)

Bundle of Two (2) CR1620 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as those provided by OEM original manufacturer in all (3 or 4 button) remote head key fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #13

(2 Pack) CR1616 1616 Lexus Remote Key Fob Replacement Original OEM (Bundle with Remote Pry Tool) fits ES300 GS300 GS400 GS430 GX470 etc. for Keyless Entry Smart Key Remote Fobs

BUNDLE OF 2 PACK BATTERY - with remote opening tool - (total 2 item bundle, 3pcs)
ORIGINAL OEM Battery as provided by Manufacturer in remote head keys. Avoid a service appointment for a battery replacement. Battery replacement is simple and remote reprogramming is not required
AVOID A SERVICE APPOINTMENT for a replacement battery. Battery replacement is simple and remote reprogramming is not required
REMOTE OPENING TOOL INCLUDED – Dual purpose opening tool included to open the battery cover (without scratching or damaging your remote) and to remove the battery from the battery compartment.
NOTE: COMPATIBLE WITH SELECT LEXUS REMOTE HEAD KEYS – There are 2 possible batteries for Lexus remote head keys. Use Amazon Part Finder to verify that this is the correct battery for your specific vehicle

Rank No. #14

(2 PACK) CR2025 2025 Remote Key Fob OEM Battery fits key case shell cover (2011-2013) for Honda Odyssey Remote Key Fob Keyless Entry FOB (with FCC ID: N5F-A04TAA N5F-AO4TAA) FITS 5 or 6 Button Remotes

Bundle of Two (2) CR2025 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (5 or 6 button) remote fobs. (Refer to product images to confirm compatibility). Works with FCC ID: N5F-A04TAA
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #15

(2 Pack) CR2032 2032 Remote Key FOB OEM Battery fits 2014-2021 for Acura ILX MDX RDX RLX TLX Smart Key Remote Keyless Fob (for FCC ID: ACJ932HK1210A, A2C32523200, A2C30399700, KR5V1X)

Bundle of Two (2) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (4 or 5 button) Smart Key remote fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #16

(2 Pack) CR2032 2032 Compatible with Honda OEM Original Battery for Smart Key Remote Keyless Fob fits 2015-2021 Accord CR-V Civic Pilot FCC ID: ACJ932HK1310A Proximity Prox fits 3, 4, 5, 6, 7 Buttons

2 PACK BATTERY with Opening/Pry tool for 3, 4, 5, 6, and 7 Button 2015-2021 Smart Key keyless entry smart key fobs (2 Item bundle – 3pcs).
ORIGINAL OEM Battery as provided by and Compatible with Honda 2015-2021 Smart Key Remotes (that look identical to the remote shown in the listing photo).
OPENING/PRY TOOL INCLUDED – To assist in opening remote or removing remote battery cover and battery from battery compartment.
EASY TO INSTALL and remote reprogramming not required after installation. Batteries comes individually sealed in blister packaging and 5-10 year future expiry. Guaranteed fresh and long-lasting batteries. 3v Coin Battery

Rank No. #17

(2 Pack) CR1616 1616 OEM Replacement Battery Compatible with Honda 2005-2017 Remote Key Fob (Bundle with Pry Tool) fits Civic Accord CR-Z CR-V Pilot Odyssey, Insight Crosstour Element etc Keyless

[Bundle of Two (2) CR1616 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Honda] – Same battery as provided by OEM original manufacturer in all (3 and 4 button) remote head fobs. (Refer to product images to confirm compatibility)
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist With Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Rank No. #18

(2 Pack) CR2032 2032 Replacement Battery Smart Remote Key Fob OEM fits Key case Shell Prox (2007-2022+) for Nissan 370Z Altima Armada GT-R Kicks Leaf Maxima Murano Pathfinder Rogue Sentra Titan Versa

Bundle of Two (2) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (Smart Key) remote fobs. (Refer to product images to confirm compatibility). Works with FCC ID’s: KR55WK49622, KR55WK48903, CWTWB1U840, KR5S180144014, CWTWB1U787, KR5TXN1, KR5TXN7, KR5S180144106,
[NOTE: Use AmazonConfirmedFit to ensure that this is the correct battery for your remote]
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.

Rank No. #19

X AUTOHAUX 313.8MHz Replacement Keyless Entry Remote Car Key Fob for Honda Odyssey 2005 2006 2007 2008 2009 2010 OUCG8D-399H-A 72147-SHJ-X61 6 Key Button

Part Numbers: OUCG8D-399H-A, OUCG8D399HA 72147-SHJ-A61, 72147SHJA61, 72147-SHJ-A71, 72147SHJA71
Fitment: for Honda Odyssey Touring 2005 2006 2007 2008 2009 2010
FCC ID: OUCG8D-399H-A; Frequency: 313.8MHz; This car key fob has 6 buttons, lock key, unlock key, left side door opening key, right side door opening key, trunk hold key, panic key. Please confirm the original key has the same button pattern and the vehicle is equipped with the push to start option.
Programming: This remote must be programmed and cut by a qualified locksmith or dealership. Note: please make sure the remote programming can work on your vehicle before asking the locksmith to cut the key. This remote must be programmed and cut by a qualified locksmith or dealership
This is a non-OEM product, accessory only! Package Included:1 x Car Keyless Entry Remote (Battery included)

Rank No. #20

(2 Pack) CR2032 2032 Smart Remote Key Fob OEM Battery Replacement fits Key case Shell (2022-2023+) for Honda Civic Accord and for Acura MDX Smart Key Prox Fob with ID: KR5TP-4 and P/N: 72147-T20-A11

Bundle of Two (2) CR2032 Remote Fob Battery and Opening/Pry Tool] - Two item bundle (total 3pcs)
[Original OEM Battery as Provided by Manufacturer] – Same batteries as provided by OEM original manufacturer in all (Smart Key) remote fobs. (Refer to product images to confirm compatibility). Works with FCC ID: : KR5TP-4 and P/N: 72147-T20-A11
[Avoid a Service Appointment for Battery Replacement] - Battery replacement is simple and remote reprogramming is not required
[Pry Tool Included to Assist with Battery Change] - Dual purpose opening tool included to help open the remote (without scratching or damaging your remote case) and to remove the battery.
[Step-By-Step Installation Video Included] - Detailed instructional video included (via link on product packaging) demonstrating the battery replacement procedure

Last update on 2023-08-21 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Changing The Battery In A Honda Odyssey Key Fob?

Do you get stressed out thinking about shopping for a great Changing The Battery In A Honda Odyssey Key Fob? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Changing The Battery In A Honda Odyssey Key Fob, which is why we have assembled a comprehensive list of the greatest Changing The Battery In A Honda Odyssey Key Fob available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Changing The Battery In A Honda Odyssey Key Fob that you consider buying. Your questions might include the following:

Is it worth buying an Changing The Battery In A Honda Odyssey Key Fob?
What benefits are there with buying an Changing The Battery In A Honda Odyssey Key Fob?
What factors deserve consideration when shopping for an effective Changing The Battery In A Honda Odyssey Key Fob?
Why is it crucial to invest in any Changing The Battery In A Honda Odyssey Key Fob, much less the best one?
Which Changing The Battery In A Honda Odyssey Key Fob are good in the current market?
Where can you find information like this about Changing The Battery In A Honda Odyssey Key Fob?

We’re convinced that you likely have far more questions than just these regarding Changing The Battery In A Honda Odyssey Key Fob, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Changing The Battery In A Honda Odyssey Key Fob, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Changing The Battery In A Honda Odyssey Key Fob. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an Changing The Battery In A Honda Odyssey Key Fob buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Changing The Battery In A Honda Odyssey Key Fob currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Changing The Battery In A Honda Odyssey Key Fob has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Changing The Battery In A Honda Odyssey Key Fob?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Changing The Battery In A Honda Odyssey Key Fob.
Customer Ratings: Number ratings grade Changing The Battery In A Honda Odyssey Key Fob objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Changing The Battery In A Honda Odyssey Key Fob.
Product Quality: You don’t always get what you pay for with an Changing The Battery In A Honda Odyssey Key Fob, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Changing The Battery In A Honda Odyssey Key Fob is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining Changing The Battery In A Honda Odyssey Key Fob information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Changing The Battery In A Honda Odyssey Key Fob is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: How to change battery in Honda key fob?

A: 1) Determine Your Battery Type Flip over your keyless entry remote and look for the battery type written on the back. If the battery type is illegible, don’t worry. … 2) Open your Honda Key Fob If your keyless entry remote has a screw, remove it using a jeweler’s screwdriver. … 3) Remove the Dead Battery Note the position of the positive and negative sides of the battery in the remote when you remove it. … 4) Insert the New Battery The new battery should go in the same position as the old. … 5) Reconnect the Two Halves of Your Honda Keyless Entry Remote

Q: How do you change the battery in a key fob?

A: Insert the battery in the proper position. Gently snap the fob shell back together, making sure it snaps together completely. Try all the remote buttons to verify it is working. By noticing the signs that your key fob is giving you, it will be easy to replace the battery and restore its functionality.

Q: Do you have to reprogram a key fob after changing the battery?

A: Sometimes a key fob requires reprogramming after a battery change. Many people have found this out the hard way, performing what seemed to be a routine activity only to find that the fob stops working. Whether or not this will be a problem for you depend largely upon the car you are driving.

Q: How to change the battery in the key fob?

A: Find the notch to open the fob. This is the trickiest part because the notch may not be obvious. … Use the screwdriver to pop it open. Slide the flat-tipped screwdriver into the slot and wedge it open. … Identify the battery type. … Replace the old battery with a new one. … Snap the fob shut. …