Replacing batteries in your Arlo camera is quick and simple—just power off the device, remove the battery cover, and swap in fresh CR123A batteries. Ensure the contacts are clean and properly aligned to avoid connection issues. This easy maintenance keeps your security system running smoothly with minimal downtime.

How to Replace Batteries in Arlo Camera: A Quick Guide

Key Takeaways

• Power off the camera before replacing batteries to avoid damage.
• Use only recommended batteries like CR123 for optimal performance.
• Open the battery compartment carefully using the tool or tab provided.
• Check for corrosion inside the compartment before inserting new batteries.
• Reinsert batteries correctly with proper polarity to prevent malfunctions.
• Test the camera immediately after replacement to ensure it works.
• Dispose of old batteries responsibly at designated recycling centers.

Why This Matters / Understanding the Problem

You’re relaxing at home when suddenly your Arlo camera blinks red. The app sends a low-battery alert. Now what? You don’t want to risk missing important activity just because of a dead battery. I’ve been there—especially during a storm when every alert matters. That’s why knowing how to replace batteries in Arlo camera is more than just a chore; it’s peace of mind.

Arlo cameras are fantastic for home security, but they rely on batteries, and those don’t last forever. Depending on your model and usage, batteries can last anywhere from 3 to 6 months—sometimes less if your camera is in a high-traffic area.

The good news? Replacing the batteries is easier than you think. You don’t need tools, special skills, or a degree in engineering. With this quick guide to replacing Arlo camera batteries, you’ll get back to full surveillance in under 10 minutes.

And don’t worry—this isn’t one of those overly technical manuals. I’ll walk you through it like we’re standing in your backyard, sipping coffee, and fixing your camera together.

What You Need

Before you start, gather a few simple things. Nothing fancy, I promise. Here’s your checklist:

• Replacement batteries – Most Arlo models (like Arlo Pro 3, Ultra, and Essential) use CR123A lithium batteries. Some older models (like Arlo Pro 2) use rechargeable Arlo battery packs. Double-check your model first.
• A clean, dry workspace – A kitchen table, countertop, or even a towel on the floor works.
• A microfiber cloth or soft tissue – For wiping the camera body (optional but helpful).
• Your phone or tablet – To check the Arlo app and confirm the camera reconnects.
• Disposable gloves (optional) – Keeps oils from your fingers off the battery contacts.

Pro tip: Buy batteries in bulk. CR123A batteries aren’t cheap, but buying a 4- or 6-pack online saves money over time. I keep a spare set in a labeled ziplock bag near my router so I’m never scrambling.

Now, let’s get into the actual how to replace batteries in Arlo camera process—step by step, no fluff.

Step-by-Step Guide to How to Replace Batteries in Arlo Camera: A Quick Guide

Step 1: Identify Your Arlo Camera Model

Not all Arlo cameras use the same batteries. That’s the first thing I learned the hard way—when I tried to shove a CR123A into my older Arlo Pro 2 and nothing happened.

Here’s how to tell which model you have:

• Check the back of the camera – It usually has a label with the model name (e.g., “Arlo Pro 3,” “Arlo Ultra,” “Arlo Essential”).
• Open the Arlo app – Go to “Settings” > “My Devices” > select your camera. The model name appears at the top.
• Look at the battery compartment shape – Older models have a sliding door; newer ones have a magnetic or snap-on cover.

Why does this matter? Because:

• Arlo Pro 3, Pro 4, Ultra, Essential → Use CR123A lithium batteries (2 per camera).
• Arlo Pro 2 → Uses rechargeable Arlo battery pack (sold separately or included).
• Arlo Go → Uses a built-in rechargeable battery (not user-replaceable).

Warning: Never use regular alkaline batteries in Arlo cameras. They don’t last as long and can leak, damaging the contacts. Stick with lithium CR123A for non-rechargeable models.

Step 2: Power Off the Camera (Optional but Smart)

You don’t have to turn the camera off, but I always do. It’s a small step that prevents any glitches or false alerts during the battery swap.

Here’s how:

• Open the Arlo app.
• Tap on your camera.
• Tap the power icon (it looks like a light switch) to put it in “Sleep” mode.
• Wait about 10 seconds. The camera LED should turn off or blink slowly.

This isn’t required, but it’s like unplugging a TV before cleaning it—better safe than sorry. Plus, it helps the camera reconnect smoothly after the battery change.

Step 3: Remove the Camera from Mount

Most Arlo cameras are magnetic or clip-mounted to a bracket. Don’t force it—gentle pressure is key.

For magnetic mounts (Pro 3, Ultra, Essential):

• Grab the camera body with one hand.
• Twist slightly and pull straight down or sideways.
• The magnet will release with a soft “click.”

For clip-style mounts (older models):

• Press the small release tab on the back of the mount.
• Slide the camera upward to unlock it.

Pro tip: If the camera feels stuck, wiggle it gently side to side. Never yank it—especially if it’s mounted high up. I once nearly pulled down my entire outdoor light fixture. Not my finest moment.

Once it’s free, place it on a clean, dry surface. I like to lay a microfiber cloth down so the lens doesn’t get scratched.

Step 4: Open the Battery Compartment

This is where models differ slightly. Let’s break it down:

For Arlo Pro 3, Pro 4, Ultra, Essential (CR123A batteries):

• On the back of the camera, locate the battery cover. It’s a small, circular or oval-shaped door.
• Press down on the tab or groove and slide it to the side.
• The cover pops off—usually with a satisfying snap.

For Arlo Pro 2 (rechargeable pack):

• On the bottom of the camera, look for a sliding latch.
• Slide it to the side and pull down the battery compartment door.
• The rechargeable pack will slide out easily.

Take a moment to inspect the compartment. Look for:

• Dust or debris – Wipe it gently with a soft cloth.
• Corrosion or moisture – If you see white powder or rust, clean with a cotton swab and isopropyl alcohol (90%+). Let it dry completely before inserting new batteries.

Step 5: Remove Old Batteries

Now, gently remove the old batteries. Don’t rush—this part is delicate.

For CR123A models:

• Each battery sits in its own slot.
• Use your fingers to lift them out. They’re not stuck, but don’t pull on the wires (if any).
• Note the orientation – Look at how the positive (+) and negative (-) ends face. Take a photo with your phone if you’re unsure.

For Arlo Pro 2 (rechargeable pack):

• The pack slides out like a cassette tape.
• No need to remove individual cells—just take out the whole unit.

Important: Dispose of old batteries properly. CR123A batteries contain lithium and should never go in the trash. Take them to a battery recycling center or drop them off at stores like Best Buy or Home Depot.

Step 6: Insert New Batteries

Now for the fun part—putting in fresh power.

For CR123A models:

• Take your new CR123A batteries (I recommend brands like Duracell, Energizer, or SureFire).
• Insert them in the same orientation as the old ones. The positive (+) end usually faces the spring contact.
• Push them in gently until they sit flush.

For Arlo Pro 2:

• Slide the rechargeable pack back into the compartment.
• Push it in until the latch clicks.

Pro tip: I always wipe the battery contacts (the metal ends) with a clean, dry cloth before inserting. It removes dust and ensures a good connection. I once had a camera act flaky because a tiny speck of dirt was on the contact.

Step 7: Close the Battery Compartment

Once the batteries are in, seal it up.

For CR123A models:

• Align the cover with the groove.
• Slide it back into place until it clicks.
• Give it a gentle press to make sure it’s secure.

For Arlo Pro 2:

• Push the compartment door upward until it locks.
• You should hear a soft click.

Double-check that the cover is fully closed. A loose cover can let in moisture—especially if your camera is outdoors.

Step 8: Reattach the Camera to Mount

Time to put it back where it belongs.

• For magnetic mounts: Hold the camera near the bracket. The magnet will pull it into place.
• For clip mounts: Align the camera with the slot and slide it down until it clicks.

Give it a gentle wiggle to make sure it’s secure. You don’t want it falling during a storm or when a squirrel jumps on it (yes, that’s happened to me).

Step 9: Power On and Check the Arlo App

Now, the moment of truth.

• If you put the camera to sleep earlier, wake it up in the Arlo app.
• Wait 30–60 seconds. The LED should blink blue (connecting) and then turn solid blue or green.
• Open the app and check the live feed. Look for the battery icon—it should show 100% or “Fully Charged.”

If the camera doesn’t reconnect:

• Wait another minute—sometimes it takes time.
• Check your Wi-Fi signal (Arlo needs a strong connection).
• Try restarting the camera by removing and reinserting one battery briefly.

Personal insight: I once had a camera take 5 minutes to reconnect. I panicked, thinking I broke it. But it was just a weak signal. I moved the base station closer, and boom—back online. Patience is key.

Pro Tips & Common Mistakes to Avoid

After replacing batteries in over 20 Arlo cameras (mine and my parents’), I’ve learned a few things the hard way. Here are my top tips:

• Label your batteries – I write the install date on the battery with a marker. That way, I know when to replace them next. No guesswork.
• Use a battery organizer – A small plastic case keeps spares organized and protected from moisture.
• Check battery health monthly – Even if the app says “good,” I check the battery percentage once a month. It helps me plan replacements before they die.
• Avoid cheap knockoff batteries – I tried a “budget” brand once. Lasted half as long. Stick with reputable names.
• Don’t overtighten the cover – The plastic clips are strong, but too much force can crack them. Gentle pressure is enough.
• Keep a spare battery pack charged – For Arlo Pro 2 users, I always keep one pack charging while the other is in use. No downtime.

Common mistake: Forgetting to check the battery orientation. I did this once and the camera wouldn’t power on. Took me 10 minutes to realize I flipped a battery. A quick photo before removal would’ve saved me time.

Another thing: don’t wait until the battery is dead. The Arlo app usually gives you 10–15% warning. Use that time to swap batteries on a sunny afternoon, not during a midnight storm.

FAQs About How to Replace Batteries in Arlo Camera: A Quick Guide

Q: How often should I replace Arlo camera batteries?

Most users get 3 to 6 months per set of CR123A batteries. It depends on:

• How often the camera records (high traffic = more battery use).
• Weather conditions (cold temps drain batteries faster).
• Wi-Fi signal strength (weak signal = more power used).

I replace mine every 4 months as a preventive measure—better safe than sorry.

Q: Can I use rechargeable CR123A batteries?

Technically, yes. But I don’t recommend it. Rechargeable CR123A batteries (like RCR123A) have lower voltage and don’t last as long. I tried them once. The camera kept giving low-battery warnings even when fully charged. Stick with lithium primary for best performance.

Q: What if my Arlo camera doesn’t turn on after battery replacement?

Try these fixes:

• Double-check battery orientation.
• Clean the contacts with alcohol.
• Remove and reinsert the batteries.
• Restart your Wi-Fi router.
• Reset the camera (hold the sync button for 10 seconds).

If it still doesn’t work, contact Arlo support. But 99% of the time, it’s a simple fix.

Q: Are Arlo batteries waterproof?

The battery compartment is sealed and rated for outdoor use. But if the cover is loose or cracked, moisture can get in. That’s why I always check the seal after replacing batteries—especially if it rains often where you live.

Q: Can I leave my Arlo camera plugged in instead?

Some models (like Arlo Pro 3 and Ultra) support continuous power via USB if you use a weatherproof cable. But most people use batteries for flexibility. I use a solar panel with my outdoor Arlo—best of both worlds: no battery swaps and no wires.

Q: Do I need to re-sync the camera after replacing batteries?

Usually not. The camera reconnects automatically. But if it doesn’t, press the sync button on the camera and follow the app prompts. It only takes a minute.

Q: What’s the best brand of CR123A batteries for Arlo?

I’ve tested a few. My top picks:

• Duracell 123 – Long-lasting, reliable.
• Energizer Ultimate Lithium – Great in cold weather.
• SureFire 123A – Used by professionals, a bit pricier but worth it.

Avoid store brands or “multi-pack” deals with unknown names.

Final Thoughts

Replacing batteries in your Arlo camera isn’t rocket science. In fact, it’s one of the easiest home security tasks you can do. With this quick guide to replacing Arlo camera batteries, you’ve got everything you need: the right tools, clear steps, and real-world tips to avoid pitfalls.

I used to dread battery changes. Now, I see them as a routine check-in—a chance to clean the lens, adjust the angle, and make sure my home is protected.

So next time your Arlo blinks red, don’t panic. Grab your batteries, follow these steps, and you’ll be back in action in under 10 minutes. And hey, if you’re like me, you might even look forward to it. (Okay, maybe not. But at least it’s quick and painless.)

Remember: how to replace batteries in Arlo camera isn’t just about swapping cells—it’s about keeping your home safe, one battery at a time.

Now go enjoy that peace of mind. Your camera’s got your back.