How to Change the Battery in Blink Doorbell

Changing the battery in your Blink doorbell is simple and takes just a few minutes. This guide walks you through every step, from identifying low battery signs to reattaching the doorbell securely. No tools? No problem—most models use a simple twist-off design.

Key Takeaways

Low battery alerts appear in the Blink app: When your doorbell’s battery is running low, the app will notify you with a warning message and a battery icon.
Use only recommended AA lithium batteries: Blink recommends Energizer Ultimate Lithium or equivalent for best performance and longer life, especially in cold weather.
No tools needed for most models: The Blink Video Doorbell (2020 and later) uses a tool-free twist-off faceplate, making battery changes quick and easy.
Turn off motion detection before replacing: To avoid false alerts during the process, disable motion detection in the app temporarily.
Reattach the doorbell securely: After replacing the battery, make sure the faceplate clicks into place to maintain weather resistance.
Test the doorbell after replacement: Use the live view feature in the app to confirm the doorbell is working and recording properly.
Recycle old batteries responsibly: Dispose of used batteries at a local recycling center or retail drop-off to protect the environment.

How to Change the Battery in Blink Doorbell: A Complete Step-by-Step Guide

If you’ve noticed your Blink doorbell acting sluggishly, missing motion alerts, or showing a low battery warning in the app, it’s probably time for a battery change. Don’t worry—this isn’t a complicated repair job. In fact, changing the battery in your Blink doorbell is one of the easiest maintenance tasks you can do to keep your smart home security running smoothly.

Whether you’re using the original Blink Video Doorbell or the newer 2020 model, this guide will walk you through the entire process with clear, simple instructions. You’ll learn how to identify when the battery is low, which batteries to use, how to safely remove and replace them, and how to test your doorbell afterward. We’ll also cover common mistakes to avoid and troubleshooting tips if something doesn’t go as planned.

By the end of this guide, you’ll feel confident performing this routine maintenance yourself—no electrician or tech expert required. Let’s get started!

Why You Might Need to Change the Battery

Visual guide about How to Change the Battery in Blink Doorbell

Image source: doorbellnest.com

Blink doorbells are designed to be wire-free, which means they run entirely on battery power. This gives you flexibility in installation—no need to drill into walls or connect to existing doorbell wiring. But it also means the batteries will eventually run out.

Most Blink doorbells use two AA lithium batteries, which typically last between 12 to 24 months, depending on usage, climate, and settings. If you live in a colder region, the battery may drain faster because lithium batteries perform better in cold weather than alkaline ones—but extreme cold can still reduce efficiency.

Here are the most common signs that your Blink doorbell battery needs replacing:

Low battery notification in the Blink app: This is the clearest sign. The app will send a push notification and display a battery icon with a red or yellow warning.
Delayed or missed motion alerts: If your doorbell isn’t sending notifications when someone approaches, a weak battery could be the culprit.
Short video clips or no recordings: The doorbell may struggle to power the camera and Wi-Fi connection if the battery is low.
Doorbell not responding to button presses: If pressing the button doesn’t trigger a live view or recording, the battery may be too weak to power the system.
Frequent disconnections from Wi-Fi: A dying battery can cause the doorbell to lose connection to your home network.

If you notice any of these issues, it’s time to check the battery. Don’t wait too long—once the battery is completely dead, the doorbell won’t function at all.

What You’ll Need Before You Start

The great thing about changing the battery in a Blink doorbell is that you don’t need much. Here’s a quick checklist of what to gather:

Two AA lithium batteries: Blink officially recommends Energizer Ultimate Lithium or equivalent. These batteries last longer and perform better in extreme temperatures.
A clean, dry workspace: Find a flat surface where you can lay out the doorbell and batteries without losing small parts.
Optional: A microfiber cloth: Useful for cleaning the doorbell lens or faceplate while it’s off.
Your smartphone with the Blink app: You’ll need this to disable motion detection and test the doorbell afterward.

Avoid using alkaline batteries, even if they’re fully charged. They drain faster and may not provide consistent power, especially in cold weather. Rechargeable NiMH batteries are also not recommended—they have lower voltage and shorter lifespans in this type of device.

Pro tip: Buy a pack of lithium batteries in advance so you’re always prepared. They have a long shelf life (up to 20 years), so you can store them without worry.

Step 1: Prepare Your Blink Doorbell for Battery Replacement

Before you physically remove the doorbell, it’s a good idea to prepare the system to avoid false alerts or disruptions.

Disable Motion Detection in the App

Open the Blink app on your smartphone and follow these steps:

Tap the “Cameras” tab at the bottom of the screen.
Select your doorbell from the list.
Tap the gear icon (settings) in the top-right corner.
Scroll down and toggle off “Motion Detection.”

Turning off motion detection prevents the doorbell from sending alerts while you’re handling it. This is especially helpful if you’re working during the day when people might walk by.

Check the Battery Level

While you’re in the app, check the current battery level:

Go back to the camera view.
Look for the battery icon in the top-left corner of the live feed.
The icon will show a percentage or a visual bar indicating remaining charge.

If the battery is below 20%, it’s definitely time for a replacement. Even if it’s higher, but you’re experiencing performance issues, a fresh battery might still help.

Choose the Right Time

Pick a time when you won’t be disturbed—early morning or late evening works well. Also, avoid changing the battery during rain or snow, as moisture can damage the internal components if the doorbell isn’t resealed properly.

Step 2: Remove the Blink Doorbell from the Mount

Now it’s time to physically remove the doorbell from the wall mount. The process varies slightly depending on your model, but most modern Blink doorbells use a tool-free design.

For Blink Video Doorbell (2020 and Later Models)

These models feature a twist-off faceplate that makes battery replacement quick and tool-free.

Locate the small notch at the bottom of the doorbell. It’s usually a small indentation or groove.
Gently press and twist the faceplate counterclockwise. You’ll feel it loosen after about a quarter turn.
Lift the faceplate away from the backplate. The battery compartment is now exposed.

Be careful not to force it. If it doesn’t twist easily, double-check that you’re pressing in the right spot. Some users mistakenly try to pry it open with a screwdriver—this can damage the plastic clips.

For Older Blink Doorbell Models (Pre-2020)

Older models may require a screwdriver to remove the mounting plate.

Use a Phillips-head screwdriver to remove the screw at the bottom of the doorbell.
Gently pull the doorbell away from the wall mount. It should slide out smoothly.
Flip the doorbell over to access the battery compartment.

Keep the screw in a safe place—like a small bowl or magnetic tray—so you don’t lose it.

Safety Tip: Handle with Care

The doorbell contains sensitive electronics. Avoid touching the camera lens or internal components. Hold it by the edges to prevent fingerprints or static discharge.

Step 3: Replace the Old Batteries

With the doorbell removed and the battery compartment exposed, you’re ready to swap out the old batteries.

Remove the Old Batteries

Open the battery compartment door. It’s usually held in place by a small latch or clip.
Slide out the old batteries. Note the orientation—most compartments have + and – symbols to guide you.
Dispose of the old batteries responsibly. Take them to a local recycling center, hardware store, or battery drop-off location. Never throw lithium batteries in the trash.

Pro tip: Take a photo of the battery orientation with your phone before removing them. This ensures you insert the new ones correctly.

Insert the New Batteries

Take two fresh AA lithium batteries. Make sure they’re the same brand and charge level.
Insert them into the compartment, matching the + and – symbols. The flat end (negative) usually goes against the spring.
Close the battery compartment door securely. Make sure it clicks into place to maintain weather resistance.

Double-check that the batteries are seated properly. Loose batteries can cause intermittent power issues.

Optional: Clean the Doorbell

While the doorbell is open, take a moment to clean it:

Use a dry microfiber cloth to wipe the camera lens.
Gently remove dust or debris from the motion sensor (usually a small dome near the lens).
Check the mounting plate for dirt or cobwebs.

Avoid using water or cleaning sprays directly on the doorbell. If needed, lightly dampen the cloth—but never let moisture seep into the electronics.

Step 4: Reattach the Doorbell to the Mount

Now that the new batteries are in, it’s time to put the doorbell back on the wall.

For Tool-Free Models (2020+)

Align the faceplate with the backplate. The notch at the bottom should match the groove on the mount.
Press the faceplate firmly against the backplate.
Twist it clockwise until it locks into place. You should hear a soft click.

Give it a gentle tug to make sure it’s secure. If it wobbles or feels loose, twist it a bit more.

For Older Models with Screws

Slide the doorbell back onto the wall mount. Make sure it’s seated properly.
Reinsert the screw at the bottom and tighten it with a screwdriver. Don’t overtighten—this can crack the plastic.

Ensure a Weather-Tight Seal

A proper seal prevents moisture from entering the doorbell. If your model has a rubber gasket or seal, make sure it’s clean and properly aligned. Water damage is not covered under warranty, so this step is crucial.

Step 5: Test the Doorbell

With the doorbell back in place, it’s time to make sure everything is working.

Re-enable Motion Detection

Open the Blink app and:

Go to your doorbell’s settings.
Toggle “Motion Detection” back on.
Adjust sensitivity if needed (under “Motion Settings”).

Check the Live View

Tap the “Live View” button in the app.
Wait a few seconds for the camera to connect.
Verify the video is clear and the audio is working.

If the live view loads quickly and the image is sharp, your doorbell is functioning properly.

Test the Doorbell Button

Press the physical button on the doorbell. You should see a notification on your phone and hear the chime (if connected to a Blink Sync Module and chime).

Verify Battery Level

Check the battery icon in the app. It should now show a full or nearly full charge. If it still shows low, double-check that the batteries are inserted correctly and are fully charged.

Troubleshooting Common Issues

Even with careful steps, sometimes things don’t go perfectly. Here’s how to fix common problems:

Doorbell Won’t Turn On After Battery Replacement

Check battery orientation: Make sure the + and – ends are correct.
Ensure batteries are fully charged: New batteries should have full power, but defective ones can happen.
Clean the battery contacts: Use a dry cloth to wipe the metal springs in the compartment.
Reset the doorbell: Hold the reset button (usually on the side) for 10 seconds, then re-sync it in the app.

Faceplate Won’t Lock Into Place

Check for obstructions: Dirt or debris in the twist mechanism can prevent locking.
Align the notch properly: Make sure the bottom groove matches the mount.
Apply even pressure: Twist while pressing firmly—don’t just twist without pushing.

Low Battery Warning Persists

Wait 24 hours: The app may take time to update the battery level.
Re-sync the doorbell: Remove it from the app and re-add it.
Try different batteries: Some brands may not be compatible or could be defective.

Doorbell Disconnects Frequently

Check Wi-Fi signal: Move the Sync Module closer or use a Wi-Fi extender.
Update the app and firmware: Go to Settings > System Info > Check for Updates.
Reduce motion zones: Too many active zones can drain the battery faster.

Tips to Extend Battery Life

To get the most out of your new batteries, follow these best practices:

Use lithium batteries: They last longer and perform better in cold weather.
Adjust motion sensitivity: Lower sensitivity reduces false alerts and battery drain.
Limit live view usage: Frequent live streaming uses more power.
Enable “Smart Alerts”: This feature reduces notifications by filtering out people, packages, or animals.
Keep the doorbell clean: A dirty lens or sensor can cause the doorbell to work harder.
Update firmware regularly: Blink releases updates that improve efficiency and battery management.

When to Consider a Hardwired Solution

If you’re constantly changing batteries, you might want to consider a hardwired doorbell. Blink offers a wiring kit that lets you connect your doorbell to existing doorbell wires, eliminating the need for batteries.

This is ideal if:

You have existing doorbell wiring.
You live in an area with frequent motion alerts.
You prefer a maintenance-free setup.

The wiring kit is easy to install and works with most homes. Just make sure to turn off power at the breaker before starting.

Conclusion

Changing the battery in your Blink doorbell is a quick, straightforward task that anyone can do. With the right batteries and a few simple steps, you can keep your smart doorbell running reliably for years.

Remember to use AA lithium batteries, disable motion detection before starting, and test the doorbell after replacement. If you run into issues, the troubleshooting tips in this guide will help you get back on track.

Regular maintenance like this ensures your home stays secure and your doorbell performs at its best. So the next time you see that low battery warning, don’t stress—just follow this guide and you’ll be done in minutes.

Stay safe, stay connected, and enjoy the peace of mind that comes with a fully functional Blink doorbell.