How to Change a Eufy Battery

This guide walks you through how to change a Eufy battery in popular models like doorbells and cameras. You’ll learn the tools needed, safety tips, and troubleshooting advice to keep your device running smoothly.

Key Takeaways

• Check your model first: Not all Eufy devices use removable batteries—some are hardwired or use rechargeable packs. Always confirm your device type before starting.
• Use the right tools: A small Phillips screwdriver and a plastic prying tool are usually all you need. Avoid metal tools to prevent damage.
• Power off before replacing: Always turn off the device or disconnect it from power to avoid short circuits or damage.
• Handle the battery carefully: Eufy batteries are lithium-ion—avoid puncturing, bending, or exposing them to heat.
• Recharge before reinstalling: For best performance, fully charge the new or replacement battery before placing it back in the device.
• Test after installation: Once reassembled, test the device to ensure it powers on and connects to the app correctly.
• Dispose of old batteries safely: Take used lithium-ion batteries to a certified recycling center—never throw them in the trash.

How to Change a Eufy Battery: A Complete Step-by-Step Guide

If you own a Eufy security device—like a doorbell, camera, or floodlight—you may eventually need to change its battery. Whether your device is losing power faster than usual, won’t turn on, or you’re simply doing routine maintenance, knowing how to change a Eufy battery can save you time and money. This guide will walk you through the entire process, from identifying your model to safely installing a new battery and troubleshooting common issues.

We’ll cover the most popular Eufy devices with removable batteries, including the Eufy Video Doorbell (battery version), Eufy SoloCam, and Eufy Floodlight Cam. While some Eufy models are hardwired or use built-in non-removable batteries, many are designed for easy battery replacement. This guide focuses on those user-serviceable models.

By the end of this article, you’ll feel confident replacing your Eufy battery without needing professional help. We’ll include practical tips, safety warnings, and troubleshooting advice to ensure a smooth experience. Let’s get started!

Why You Might Need to Change a Eufy Battery

Before diving into the steps, it’s helpful to understand why battery replacement might be necessary. Eufy devices are known for their long battery life—some can last up to six months on a single charge, depending on usage. However, over time, lithium-ion batteries degrade. You might notice:

– The device powers off unexpectedly, even after a full charge.
– The battery drains much faster than before.
– The Eufy app shows a low battery warning frequently.
– The device fails to turn on at all.

These signs usually mean it’s time to replace the battery. In some cases, the battery may simply need recharging, but if performance continues to decline, a replacement is the best solution.

It’s also worth noting that extreme temperatures—both hot and cold—can affect battery life. If your Eufy device is installed in a very sunny or freezing location, the battery may wear out faster. Replacing it with a fresh one can restore full functionality.

Tools and Materials You’ll Need

You don’t need a full toolbox to change a Eufy battery. Most replacements require just a few basic items. Here’s what to gather before you begin:

• Small Phillips-head screwdriver: Used to remove screws on the back or bottom of the device.
• Plastic prying tool or guitar pick: Helps gently separate the device casing without scratching or damaging it.
• Replacement battery: Make sure it’s compatible with your specific Eufy model. Check the model number on the device or in the app.
• Clean, dry cloth: For wiping down the device and battery compartment.
• Optional: Tweezers: Useful for handling small screws or connectors.

Avoid using metal spudgers or screwdrivers that could scratch the device or cause short circuits. Plastic tools are safer and just as effective.

You can purchase replacement batteries directly from Eufy’s official website or authorized retailers like Amazon. Be cautious of third-party batteries—while cheaper, they may not meet safety standards or last as long.

Step 1: Identify Your Eufy Model

Not all Eufy devices use the same battery type or replacement method. Before you begin, confirm which model you have. This ensures you buy the correct battery and follow the right steps.

Common Eufy devices with replaceable batteries include:

– Eufy Video Doorbell (2K, Battery Version)
– Eufy SoloCam S40, S220, S330
– Eufy Floodlight Cam (Battery Version)
– Eufy Security Indoor Cam (some models)

To find your model:

1. Open the EufySecurity app on your phone.
2. Tap on the device you want to service.
3. Go to “Device Settings” > “Device Information.”
4. Look for the model number (e.g., T8200, T8400).

You can also check the label on the back or bottom of the device. Once you know your model, search for the correct replacement battery. Using the wrong battery can damage your device or void the warranty.

Step 2: Power Down the Device

Safety first! Before handling any internal components, make sure the device is powered off.

For battery-powered Eufy devices:

– Remove the battery if it’s already accessible.
– If the battery is sealed inside, turn off the device via the app or by disconnecting it from power (if applicable).

For doorbells or cameras connected to a chime or base station:

– Unplug the base station from the wall.
– Turn off the device in the app under “Device Settings.”

This prevents accidental short circuits or damage to the circuit board. It also ensures the device doesn’t try to reconnect during the process, which could cause errors.

Step 3: Remove the Old Battery

Now it’s time to access the battery compartment. The method varies slightly by model, but the general process is similar.

For Eufy Video Doorbell (Battery Version):

1. Locate the two screws on the bottom of the doorbell. Use your Phillips screwdriver to remove them.
2. Gently pry open the front cover using a plastic tool. Start from the bottom and work your way around.
3. Once the cover is off, you’ll see the battery pack connected to the main board with a small connector.
4. Carefully disconnect the battery by pulling the connector straight out (don’t yank it).
5. Lift the battery out of the compartment.

For Eufy SoloCam (S40, S220, etc.):

1. Remove the mounting bracket by unscrewing the two screws on the back.
2. Detach the camera from the bracket.
3. On the bottom of the camera, you’ll find a small latch or screw securing the battery door.
4. Open the door and disconnect the battery connector.
5. Slide the battery out.

For Eufy Floodlight Cam (Battery Version):

1. Turn off the floodlight and disconnect from power.
2. Remove the two screws on the back of the unit.
3. Gently separate the front and back housings.
4. Locate the battery pack and disconnect the connector.
5. Remove the battery.

Always handle the battery by its edges. Avoid touching the metal contacts or bending the battery. If the battery looks swollen, leaking, or damaged, do not touch it with bare hands. Place it in a non-flammable container and take it to a recycling center immediately.

Step 4: Install the New Battery

With the old battery removed, it’s time to install the new one. Follow these steps carefully:

1. Check that the new battery is fully charged. Most Eufy replacement batteries come partially charged, but a full charge ensures optimal performance.
2. Align the battery connector with the port on the device’s circuit board.
3. Gently press the connector in until it clicks into place. Do not force it—if it doesn’t fit easily, double-check the orientation.
4. Place the battery securely in the compartment, ensuring it sits flat and doesn’t interfere with the casing.
5. Reattach the battery door or front cover, making sure all clips or screws are tightened properly.

For doorbells and cameras, make sure the cover is fully sealed to prevent water or dust from entering. This is especially important for outdoor devices.

Step 5: Reassemble and Test the Device

Once the new battery is installed, it’s time to put everything back together.

1. Reattach any covers, brackets, or housings you removed.
2. Secure all screws—don’t overtighten, as this can strip the threads.
3. Reconnect the device to its base station or mounting bracket.
4. Plug in the base station (if applicable) and turn the device back on.

Now, test the device:

– Open the EufySecurity app.
– Check that the device appears online.
– Verify the battery level shows as high or full.
– Test key functions like live view, motion detection, and notifications.

If everything works, you’re all set! If not, move on to the troubleshooting section below.

Tips for Extending Battery Life

Replacing the battery is only part of the solution. To get the most out of your new battery, follow these tips:

• Adjust motion sensitivity: High sensitivity causes more recordings and drains the battery. Lower it in areas with frequent false triggers (like busy streets).
• Use activity zones: Limit recording to specific areas to reduce unnecessary alerts.
• Enable smart detection: Use person or package detection to filter out irrelevant motion.
• Keep firmware updated: Eufy regularly releases updates that improve battery efficiency.
• Avoid extreme temperatures: Install devices in shaded or sheltered areas when possible.
• Charge regularly: Don’t wait until the battery is completely dead. Recharge when it drops below 20%.

These small changes can significantly extend battery life between charges.

Troubleshooting Common Issues

Even with careful installation, you might run into problems. Here’s how to fix the most common issues:

Device Won’t Turn On After Battery Replacement

– Double-check that the battery connector is fully seated.
– Ensure the battery is charged. Try charging it for at least 2 hours.
– Reset the device by holding the power button for 10 seconds.
– Reinstall the battery and try again.

Battery Drains Too Fast

– Check for firmware updates in the app.
– Reduce motion sensitivity or recording duration.
– Ensure the device isn’t in a high-traffic area causing constant alerts.
– Test with a different battery to rule out a defective unit.

Device Shows “Low Battery” Immediately

– The battery may not be fully charged. Charge it completely before use.
– The battery could be defective. Contact Eufy support for a replacement.
– The device might have a software glitch. Try resetting it.

Water or Moisture Inside the Device

– If you opened the device outdoors or in humid conditions, moisture may have entered.
– Dry the interior with a clean cloth and let it air dry for 24 hours before reassembling.
– Ensure all seals and gaskets are intact to prevent future issues.

App Doesn’t Recognize the Device

– Restart the app and your phone.
– Reconnect the device to Wi-Fi through the app.
– Perform a factory reset if necessary (check the user manual for instructions).

If problems persist, contact Eufy customer support. They offer excellent service and may provide a replacement under warranty.

Safety Precautions When Handling Batteries

Lithium-ion batteries are safe when handled properly, but they can be dangerous if mishandled. Follow these safety tips:

• Never puncture or crush the battery: This can cause a fire or explosion.
• Don’t expose to heat or water: Keep batteries away from direct sunlight, heaters, or rain.
• Don’t short the terminals: Avoid touching both ends with metal objects.
• Store in a cool, dry place: Ideal storage temperature is between 32°F and 77°F (0°C to 25°C).
• Dispose of properly: Take old batteries to a certified e-waste or battery recycling center.

If a battery leaks or swells, do not touch it. Place it in a metal container with sand or salt and contact your local waste authority for disposal instructions.

When to Replace vs. Recharge

Not every power issue requires a new battery. Sometimes, a simple recharge is all you need. Here’s how to tell the difference:

– Recharge if: The battery holds a charge for a few days or weeks, then drains normally. The device works fine after charging.
– Replace if: The battery drains in hours, won’t hold a charge, or the device shuts down at 30% or higher.

Most lithium-ion batteries last 300–500 charge cycles. If your device is over two years old and performance has declined, replacement is likely the best option.

Where to Buy Replacement Batteries

Always buy genuine Eufy batteries for the best performance and safety. You can purchase them from:

– Eufy Official Website: Guaranteed compatibility and warranty support.
– Amazon (sold by Eufy or authorized sellers): Fast shipping and customer reviews.
– Best Buy or other electronics retailers: In-store pickup available.

Avoid cheap third-party batteries. They may not meet safety standards, could damage your device, and often have shorter lifespans.

Check the model number before buying. For example:
– Eufy Doorbell (T8200): Uses battery model B1
– SoloCam S40: Uses battery model B2

Using the correct battery ensures a perfect fit and reliable performance.

Final Thoughts

Changing a Eufy battery is a simple task that anyone can do with the right tools and a little patience. By following this guide, you’ve learned how to safely remove the old battery, install a new one, and troubleshoot common issues. Regular maintenance—like checking battery health and adjusting settings—can keep your Eufy devices running smoothly for years.

Remember to always prioritize safety, use genuine parts, and recycle old batteries responsibly. With a fresh battery, your Eufy doorbell or camera will be back to full strength, keeping your home secure and giving you peace of mind.

If you found this guide helpful, share it with others who might need it. And don’t forget to check your Eufy devices periodically—preventative care is the best way to avoid unexpected failures.