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What Kind of Battery Do I Need for a Keyless Remote?

by Kimberly Hawthorne

Keyless remotes used for home entry, alarms and unlocking cars come in handy until the battery becomes too weak to function properly or dies.

Replacement Batteries

The best way to know what kind of battery you need for your keyless remote (fob) is to remove the one currently in the fob. Most auto parts stores carry a wide variety of keyless remote batteries. Take your old battery with you and ask for help locating the correct battery. Typically, these batteries are round and flat and the size of a dime or nickel.

Unknown Battery Type

Possibly your fob is missing the battery and you do not have one to take into a hardware store for a replacement. Most vehicle fobs require one or two lithium-ion, 3-volt coin batteries. Websites that sell replacement batteries for fobs allow you to enter the make, model and year of your vehicle and order the exact battery you need for your fob (see Resources).

Other Keyless Remote Batteries

Keyless remotes for home entry use batteries that will eventually need to be replaced. Your owner's manual will note the type of battery you will need. If you do not have your owner's manual, you can do an online search. You can also take your old battery to any hardware store and ask a clerk to assist you. Hardware stores carry a wide variety of batteries, so there is a good chance you will find what you need.

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