How Many Batteries Go in an Arlo Camera A Quick Guide

Most Arlo cameras require 2 to 4 rechargeable lithium-ion batteries, depending on the model. For example, the Arlo Pro series typically uses two 3.7V batteries, while newer models like the Arlo Ultra 2 need four for extended performance. Always check your camera’s manual to ensure compatibility and optimal runtime.

Key Takeaways

• Most Arlo cameras use 4 CR123A batteries: Check your model’s manual to confirm exact requirements.
• Some newer models are rechargeable: Opt for Li-ion batteries to reduce long-term costs.
• Low-power modes extend battery life: Enable eco settings to maximize usage between changes.
• Extreme cold drains batteries faster: Replace or recharge more often in winter conditions.
• Use high-quality branded batteries: Avoid leaks with trusted brands like Duracell or Panasonic.
• Monitor battery levels via Arlo app: Get alerts before power runs out unexpectedly.

How Many Batteries Go in an Arlo Camera? Let’s Clear the Confusion

Imagine this: You’ve just set up your shiny new Arlo camera, excited to keep an eye on your front porch or backyard. You follow the instructions, download the app, and everything’s going smoothly—until you reach the battery step. You open the battery compartment, and suddenly, you’re staring at empty slots, wondering, “Wait… how many batteries does this thing even take?”

You’re not alone. Whether you’re a first-time smart home user or a seasoned tech enthusiast, the number of batteries required for Arlo cameras can be confusing. Arlo offers several camera models, and each one has its own battery configuration. Some use two, others four, and a few even rely on rechargeable packs or solar power. It’s easy to mix them up, especially when shopping online or replacing old batteries. But don’t worry—by the end of this guide, you’ll know exactly how many batteries go in an Arlo camera, which models need what, and how to make the most of your setup. Let’s dive in and clear up the mystery once and for all.

Understanding Arlo Camera Models and Their Battery Needs

Why Battery Requirements Vary by Model

Arlo isn’t just one camera—it’s a whole family of devices, each designed for different needs. Some are built for indoor monitoring, others for extreme outdoor weather, and some are optimized for 24/7 recording. Naturally, their power needs differ. The number of batteries an Arlo camera requires depends on its size, features, and intended use.

For example, smaller, lightweight models like the Arlo Essential Spotlight Camera are designed to be energy-efficient. They use fewer batteries to keep costs down and extend battery life. On the other hand, larger, more feature-rich cameras like the Arlo Pro 3 or Ultra 2 need more power to support things like 2K/4K video, color night vision, and built-in sirens. More features = more power = more batteries.

Common Arlo Camera Lines and Their Battery Configurations

Let’s break it down by model. Here’s a quick look at the most popular Arlo cameras and how many batteries they use:

• Arlo Essential Spotlight Camera: 2 x CR123A batteries
• Arlo Essential Wire-Free Camera: 2 x CR123A batteries
• Arlo Pro 3 (and earlier Pro models): 2 x CR123A batteries
• Arlo Pro 4: 2 x CR123A batteries
• Arlo Ultra 2: 4 x CR123A batteries
• Arlo Go 2 (LTE camera): Rechargeable lithium-ion battery (sold separately)
• Arlo Floodlight Camera: 4 x CR123A batteries (some versions use a rechargeable pack)

Notice the pattern? Most Arlo cameras use 2 CR123A batteries, but high-end models like the Ultra 2 and Floodlight use four to support their advanced lighting and video features. The Arlo Go 2 is unique because it’s LTE-powered and uses a rechargeable internal battery instead of replaceable ones.

Why CR123A Batteries?

You might be wondering, “Why CR123A? Why not AA or AAA like most gadgets?” Great question. CR123A batteries are lithium-based, which means they last longer, perform better in cold temperatures, and have a higher energy density than alkaline batteries. This is crucial for outdoor cameras that need to work in rain, snow, or extreme heat. Plus, they’re compact—perfect for slim camera designs.

One thing to note: CR123A batteries aren’t as common as AA or AAA, so you might need to order them online or visit a specialty store. But once you have them, you’ll appreciate their reliability. I once used cheap knockoff batteries from a discount store, and my Arlo Pro 3 died after just two weeks. Lesson learned: invest in quality.

How Many Batteries Go in an Arlo Camera? A Model-by-Model Breakdown

Arlo Essential Series (Spotlight & Wire-Free)

The Arlo Essential cameras are budget-friendly and perfect for basic home security. They’re compact, easy to install, and surprisingly effective. Both the Essential Spotlight and Essential Wire-Free models use 2 CR123A batteries.

What I love about these models is their battery life. With moderate use (a few motion events per day), the batteries can last 3 to 6 months. That’s impressive for a wireless camera. The spotlight version adds a bright LED light, which drains the battery slightly faster, but not enough to be a dealbreaker.

Pro tip: If you’re using the spotlight feature often, consider switching to rechargeable CR123A batteries (like those from Fenix or Nitecore). They’re pricier upfront but save money in the long run. Just make sure your camera supports them—some older models don’t.

Arlo Pro Series (Pro 3, Pro 4)

The Arlo Pro 3 and Pro 4 are the workhorses of the Arlo lineup. They offer 2K video, color night vision, and a built-in siren. Like the Essential models, they use 2 CR123A batteries.

But here’s the catch: because these cameras have more advanced features, they consume more power. In my experience, the Pro 4 lasts about 2 to 4 months on a single battery set, depending on usage. If you have frequent motion alerts or use the siren often, expect to change batteries more frequently.

One thing I’ve noticed: the Pro 4 is slightly more efficient than the Pro 3. Arlo improved the power management in the newer model, so if you’re choosing between the two, go with the Pro 4 for better battery life.

Arlo Ultra 2

The Arlo Ultra 2 is the top-tier model in the Arlo family. It shoots in 4K, has HDR, and includes a powerful spotlight and siren. Because of its high-end features, it needs 4 CR123A batteries—double the amount of most other models.

At first, I was skeptical. Four batteries? That seems excessive. But it makes sense when you consider what the camera does. The 4K sensor, dual spotlights, and audio siren all require significant power. In testing, the Ultra 2 lasts about 2 to 3 months with average use. That’s shorter than the Pro series, but the trade-off is worth it if you want the best video quality.

Real-world example: My neighbor has the Ultra 2 on his front porch. He gets about 15 motion alerts per day (mostly from passing cars). After three months, the battery indicator dropped to 20%. We replaced all four batteries, and it’s been running smoothly since.

Arlo Floodlight Camera

The Arlo Floodlight Camera is designed for outdoor areas with low light. It has a massive 2,000-lumen floodlight, which is fantastic for visibility—but it’s also a power hog. Most versions use 4 CR123A batteries.

However, Arlo also offers a rechargeable battery pack (sold separately) that you can charge via USB. This is a game-changer if you hate swapping batteries. The pack lasts about 3 to 4 months, depending on how often the floodlight activates. It’s more expensive upfront, but it’s worth it if you plan to use the light frequently.

Arlo Go 2 (LTE Camera)

The Arlo Go 2 is different from the others because it’s LTE-powered and doesn’t rely on Wi-Fi. It uses a rechargeable lithium-ion battery (included) that you can charge via USB-C or a solar panel.

Since it’s not using replaceable batteries, the question of “how many batteries go in an Arlo camera” doesn’t apply here. But it’s worth mentioning because it’s a great option for remote locations (like a cabin or construction site) where Wi-Fi isn’t available.

Battery Life: How Long Do Arlo Camera Batteries Last?

Factors That Affect Battery Life

Battery life isn’t just about the number of batteries—it’s about how you use the camera. Here are the biggest factors:

• Motion detection frequency: More motion = more video recording = faster battery drain.
• Spotlight/siren use: Activating the light or siren uses a lot of power.
• Weather conditions: Cold temperatures reduce battery efficiency.
• Video quality settings: Higher resolution (2K/4K) uses more power than 1080p.
• Wi-Fi signal strength: A weak signal forces the camera to work harder to stay connected.

In my experience, a camera in a quiet backyard with minimal motion can last up to 6 months. But a camera on a busy street with frequent motion might need new batteries every 2 months.

Tips to Extend Battery Life

Want to make your batteries last longer? Try these simple tricks:

• Adjust motion sensitivity: Lower the sensitivity in the Arlo app to reduce false alerts (e.g., from swaying trees).
• Use activity zones: Only record video in specific areas (like your front door, not the street).
• Turn off the spotlight at night: If you don’t need it, disable it in the app.
• Use rechargeable batteries: As mentioned earlier, they’re more cost-effective in the long run.
• Clean the lens regularly: A dirty lens can trigger more motion alerts due to false triggers.

I once had a camera that kept draining batteries every month. After checking the app, I realized the motion sensitivity was set to “high.” I lowered it to “medium,” and the battery life doubled. Small changes make a big difference.

When to Replace Batteries

The Arlo app will send you a notification when the battery is low (usually at 20%). But don’t wait until the last minute. If you’re using the camera for security, replace the batteries when they hit 30–40% to avoid a surprise outage.

Also, keep spare batteries on hand. I keep a pack of CR123A batteries in my tool drawer. That way, I’m never caught off guard.

Choosing the Right Batteries for Your Arlo Camera

CR123A vs. Rechargeable Options

Most Arlo cameras use CR123A batteries, but you have two choices: disposable or rechargeable.

Disposable CR123A batteries are convenient and widely available. Brands like Panasonic, Duracell, and Energizer are reliable. Just avoid cheap knockoffs—they often leak or die quickly.

Rechargeable CR123A batteries (like 16340 or RCR123A) are more expensive upfront but save money over time. They’re also better for the environment. However, not all Arlo cameras support them. Check your model’s specs before buying.

For example, the Arlo Pro 3 and Ultra 2 work with rechargeables, but the Essential series doesn’t. Always verify compatibility.

Best Battery Brands for Arlo Cameras

Here are the brands I recommend:

• Panasonic: Long shelf life, reliable performance.
• Duracell: Trusted brand, good cold-weather performance.
• Energizer: Slightly pricier but very consistent.
• Fenix (rechargeable): High capacity, durable.
• Nitecore (rechargeable): Great for frequent use.

I’ve tried several brands, and Panasonic and Fenix are my go-tos. They last longer and don’t leak.

Storing and Handling Batteries

Store batteries in a cool, dry place. Avoid extreme temperatures—heat can reduce capacity, and cold can cause temporary failure.

When inserting batteries, make sure the camera is powered off. This prevents short circuits. Also, always replace all batteries at once, even if one still has charge. Mixing old and new batteries can reduce performance.

Alternative Power Options: Solar Panels and Rechargeable Packs

Arlo Solar Panel

If you hate changing batteries, consider the Arlo Solar Panel. It connects to compatible cameras (like the Pro 3, Pro 4, and Essential models) and provides continuous charging.

It’s not a full replacement for batteries—you still need them installed—but it keeps them charged. In sunny areas, it can extend battery life indefinitely. I use one on my backyard camera, and I haven’t changed the batteries in over a year.

Tip: Position the panel where it gets 6+ hours of direct sunlight daily. Even partial shade can reduce efficiency.

Rechargeable Battery Packs

As mentioned earlier, the Arlo Floodlight Camera has an optional rechargeable pack. It’s also available for the Pro 4 and Ultra 2.

The pack lasts about 3–4 months per charge and charges via USB. It’s more expensive than batteries, but it’s worth it if you use the camera heavily.

Personal experience: My dad has the rechargeable pack on his Ultra 2. He charges it every 3 months during his monthly maintenance routine. It’s convenient and saves him from buying batteries every few months.

Final Thoughts: Making the Most of Your Arlo Camera’s Batteries

So, how many batteries go in an Arlo camera? The answer depends on the model:

• Most models (Essential, Pro 3, Pro 4): 2 CR123A batteries
• High-end models (Ultra 2, Floodlight): 4 CR123A batteries
• LTE models (Go 2): Rechargeable lithium-ion battery

But the real takeaway isn’t just the number—it’s about smart battery management. By choosing the right batteries, adjusting your camera settings, and using solar or rechargeable options, you can keep your Arlo camera running smoothly for months (or even years) without hassle.

I’ve learned this the hard way—through dead batteries at 2 a.m., false alerts from over-sensitive motion zones, and the frustration of hunting down CR123A batteries at midnight. But now, my Arlo setup runs like clockwork. And with the tips in this guide, yours can too.

Remember: your Arlo camera is only as good as its power source. Take the time to understand its needs, and you’ll get the most out of your investment. Whether you’re monitoring your home, keeping an eye on pets, or securing a remote property, a well-powered Arlo camera gives you peace of mind—no guesswork, no surprises.

Battery Configuration Summary Table

Arlo Camera Model	Number of Batteries	Battery Type	Average Battery Life	Rechargeable Option?
Arlo Essential Spotlight	2	CR123A	3–6 months	No
Arlo Essential Wire-Free	2	CR123A	3–6 months	No
Arlo Pro 3	2	CR123A	2–4 months	Yes (with solar panel)
Arlo Pro 4	2	CR123A	2–4 months	Yes (rechargeable pack/solar)
Arlo Ultra 2	4	CR123A	2–3 months	Yes (rechargeable pack/solar)
Arlo Floodlight	4	CR123A	2–3 months	Yes (rechargeable pack)
Arlo Go 2	1 (internal)	Lithium-ion	3–6 months	Yes (USB/solar)

Now that you know exactly how many batteries go in an Arlo camera, you’re ready to set up, maintain, and optimize your system like a pro. Happy monitoring!

Frequently Asked Questions

How many batteries go in an Arlo camera?

Most Arlo cameras, including the Arlo Pro and Arlo Ultra models, use **two CR123A lithium batteries** per camera. This ensures long-lasting performance and reliable operation in various weather conditions.

Do all Arlo cameras use the same number of batteries?

No, battery requirements vary by model. While the Arlo Pro and Arlo Ultra use two CR123A batteries, older models like the Arlo Q often rely on built-in rechargeable batteries instead.

How often do I need to replace the batteries in my Arlo camera?

Battery life depends on usage and settings, but typically, two CR123A batteries last 3-6 months. High activity or extreme temperatures may shorten this timeframe.

Can I use rechargeable batteries in my Arlo camera?

Arlo recommends using **non-rechargeable CR123A lithium batteries** for optimal performance. Rechargeable batteries may not provide consistent power and could damage the camera over time.

What happens if I put the wrong number of batteries in my Arlo camera?

Using fewer than the required batteries (e.g., one instead of two) may prevent the camera from powering on. Always follow the manufacturer’s guidelines to avoid malfunctions.

How do I check battery levels for my Arlo camera?

Open the Arlo app and navigate to your camera’s settings. The app displays real-time battery levels and sends low-battery alerts, so you know when to replace them.