Roku Remote Batteries: AA or AAA? How to Check

To find out whether your Roku remote takes AA or AAA batteries, open the battery compartment and look at the size printed on the battery holder, or check the model number printed inside the compartment against Roku’s official list. Most current Roku remotes use two AA batteries, but some older or mini models use two AAA batteries, so the physical check is the only way to be 100% sure.

Why the Battery Size Varies by Model

Roku has produced many remote models over the years, and they have not all used the same battery size. The most common remotes—the standard IR remote, the voice remote, and the voice remote Pro—all use two AA batteries. However, the Roku Voice Remote (the “mini” version that ships with some Roku Streambar and Roku TV models) uses two AAA batteries. The Roku Remote for Roku TV (the simple IR remote that comes with many Roku TVs) also uses two AAA batteries in some versions. Because Roku does not print the battery size on the outside of the remote, you must open the compartment to check.

How to Check Your Remote’s Battery Size

Turn the remote over so the back is facing you.
Look for the battery compartment latch—usually a small sliding switch or a notch at the top or bottom edge.
Slide the latch or press the notch to open the compartment door. On some models, the door slides off entirely; on others, it hinges open.
Look inside the compartment. You will see either a printed label that says “AA” or “AAA” next to the battery slots, or a molded plastic indicator showing the size. If you see the battery size printed on the battery holder itself, that is your answer.
If there is no label, look for a model number (usually starts with “RC” or “R”) printed inside the compartment, then search that model number online to confirm the battery size.

Common Remote Models and Their Batteries

Here is a quick reference for the most common Roku remotes as of 2024. Note that Roku occasionally updates hardware, so this list is a general guide, not a guarantee for every unit.

Roku Voice Remote (RC280, RC282, RC283): Two AA batteries.
Roku Voice Remote Pro (RC283, RC284): Two AA batteries (rechargeable, but AA size).
Roku Remote for Roku TV (RC280, RC282, RC283): Two AA batteries.
Roku Voice Remote (mini, RC282): Two AAA batteries.
Roku Remote for Roku TV (older, RC57, RC66): Two AAA batteries.
Roku Simple Remote (RC57, RC66): Two AAA batteries.

If your remote is a third-party replacement, the battery size may differ from the original. Always check the compartment rather than assuming.

What to Do If the Batteries Are Not Labeled

If your remote’s compartment has no label and no visible model number, you can still determine the battery size by measuring the battery slots. A AA battery is about 50 mm long and 14 mm in diameter; a AAA battery is about 44 mm long and 10 mm in diameter. If the slot is long and thin, it is likely AAA. If it is wider and longer, it is likely AA. You can also try inserting a battery you have on hand—if it fits snugly and the remote powers on, you have the right size. If it is loose or does not fit, try the other size.

How to Replace the Batteries Correctly

Remove the old batteries by pushing them out of the compartment, noting the + and − orientation printed inside.
Insert the new batteries, matching the polarity indicators. Most Roku remotes use a simple series connection, so the positive end of one battery touches the negative end of the other.
Close the compartment door until it clicks.
Press any button on the remote. If the remote does not respond, check that the batteries are fully seated and the polarity is correct.

If you are replacing with rechargeable batteries, note that some Roku remotes (like the Voice Remote Pro) are designed to be charged via a micro-USB or USB-C port, and the batteries inside are not meant to be user-replaced. In that case, you do not need to open the compartment at all—just plug in the remote to charge.

Common Problems and Misconceptions

One common misconception is that all Roku remotes use the same battery size, which leads people to buy the wrong batteries. Another is that the remote will show a low-battery warning on the TV screen—it does, but only on certain models and only when the battery is very low. If your remote is unresponsive, it may not be a battery issue at all. Try these steps before assuming the batteries are dead:

Check if the remote’s IR light blinks when you press a button (use your phone’s camera to see it, since the IR light is invisible to the naked eye). If it blinks, the remote is sending a signal, and the problem may be with the TV or the Roku device.
If the remote uses Bluetooth (voice remotes), try re-pairing it by holding the pairing button (usually inside the battery compartment) for a few seconds.
If the remote is an IR model, make sure there is a clear line of sight to the Roku device.

Cost and Lifespan of Batteries

AA and AAA batteries are both inexpensive, but AA batteries typically last longer because they have a higher capacity. A standard alkaline AA battery has about 2,500–3,000 mAh, while a AAA has about 1,000–1,200 mAh. In a Roku remote, AA batteries can last anywhere from 6 months to a year with normal use, while AAA batteries might last 3–6 months. If you use rechargeable batteries, the lifespan depends on the cycle count, but they are more cost-effective in the long run. For the Voice Remote Pro, the built-in rechargeable battery lasts about 2 months per charge, according to Roku’s official documentation.

Alternatives to Standard Batteries

If you are tired of replacing batteries, consider these alternatives:

Rechargeable AA or AAA batteries: Use NiMH rechargeable batteries, which can be recharged hundreds of times. They have a slightly lower voltage (1.2V vs 1.5V) but work fine in Roku remotes.
Roku Voice Remote Pro: This remote has a built-in rechargeable battery and can be charged via USB, eliminating the need for disposable batteries.
Roku mobile app: The Roku app on your smartphone can control your Roku device over Wi-Fi, so you can use it as a backup remote without any batteries.

If you choose rechargeable batteries, be aware that some Roku remotes may not show a low-battery warning as early with rechargeables because of the lower voltage curve. But they will still work fine until they are nearly drained.

Frequently Asked Questions

How do I know if my Roku remote uses AA or AAA without opening it?

You cannot know for sure without opening the compartment, because Roku does not print the battery size on the outside. You can look up your remote’s model number (printed on the back or inside the compartment) on Roku’s support site, but the physical check is the only reliable method.

Can I use AAA batteries in a remote that takes AA?

No. AAA batteries are smaller in diameter and length, so they will not make proper contact with the terminals. Forcing them in could damage the battery contacts or the remote’s internal wiring. Always use the size indicated.

Why does my Roku remote have a pairing button inside the battery compartment?

That button is for Bluetooth pairing. If your remote is a voice remote, it uses Bluetooth to communicate with the Roku device. Pressing and holding that button for a few seconds puts the remote into pairing mode, which can fix connection issues.

How long do Roku remote batteries last?

With standard alkaline AA batteries, you can expect 6–12 months of typical use. AAA batteries will last about half that. Heavy use, such as frequent voice commands or gaming, will shorten battery life. The Voice Remote Pro’s built-in battery lasts about 2 months per charge.

My remote stopped working, but the batteries are new. What should I do?

First, check the battery polarity and make sure the batteries are seated correctly. Then try re-pairing the remote (if it is a voice remote) by holding the pairing button for a few seconds. If it is an IR remote, check for obstructions between the remote and the Roku device. If none of that works, try restarting your Roku device by unplugging it for 10 seconds and plugging it back in.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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