What Battery Does the Aqara Doorbell Use Find Out Here

The Aqara Doorbell uses a CR2032 coin cell battery, ensuring long-lasting, reliable performance with easy replacement. This compact power source delivers up to 12 months of use, depending on activity, making it a low-maintenance choice for smart home security. No wiring needed—just pop in the battery and stay connected.

Key Takeaways

• Uses CR2450 battery: Aqara Doorbell requires a CR2450 coin cell battery for operation.
• Long battery life: Lasts up to 12 months with typical usage.
• Easy replacement: Open back cover to swap batteries in seconds.
• Low-battery alerts: App notifies you when battery needs replacing.
• Keep spares handy: Stock up on CR2450s to avoid downtime.
• Eco-friendly option: Consider rechargeable CR2450s for sustainability.

The Aqara Doorbell: A Smart Home Staple

In the rapidly evolving world of smart home technology, few devices have managed to strike the perfect balance between functionality, design, and affordability quite like the Aqara Doorbell. Whether you’re a tech enthusiast or a homeowner looking to enhance your security, the Aqara Doorbell has likely caught your attention. With its sleek design, real-time video monitoring, two-way audio, and seamless integration with platforms like Apple HomeKit, Google Assistant, and Amazon Alexa, it’s no wonder this device is a top contender in the smart doorbell market. But as with any wireless smart device, one of the most critical questions users have is: What battery does the Aqara Doorbell use?

Understanding the power source of your smart doorbell is more than just a technical detail—it’s a key factor in ensuring long-term reliability, minimizing maintenance, and avoiding unexpected downtime. After all, no one wants to be greeted by a silent doorbell when a delivery arrives or a visitor knocks. In this comprehensive guide, we’ll dive deep into the battery specifications, lifespan, charging options, and best practices for the Aqara Doorbell. Whether you’re setting up your first smart doorbell or troubleshooting battery issues, this article will provide you with everything you need to know to keep your Aqara Doorbell powered and performing at its best.

Understanding the Aqara Doorbell Battery Type

Primary Battery Model: CR123A

The Aqara Doorbell, specifically the Aqara Video Doorbell G2H (one of the most popular models), uses a CR123A lithium battery as its primary power source. This is a non-rechargeable, 3-volt lithium battery commonly used in high-drain devices like cameras, flashlights, and security systems. The CR123A is known for its long shelf life, stable voltage output, and ability to perform well in extreme temperatures—qualities that make it ideal for outdoor smart doorbells.

It’s important to note that the CR123A is different from the more common AA or AAA batteries. It’s smaller in diameter but longer, and it delivers higher voltage (3V vs. 1.5V), making it more suitable for power-hungry electronics like the Aqara Doorbell, which features a 1080p camera, Wi-Fi connectivity, and motion detection sensors.

Why CR123A Over Other Battery Types?

The choice of CR123A isn’t arbitrary. Aqara engineers selected this battery type for several compelling reasons:

• Energy Density: The CR123A packs more energy per unit volume than standard alkaline batteries, which translates to longer usage between replacements.
• Low Self-Discharge: Lithium CR123A batteries lose only about 1% of their charge per year when stored, meaning they remain reliable even after months of inactivity.
• Wide Temperature Range: These batteries operate efficiently from -40°C to +60°C (-40°F to 140°F), making them perfect for outdoor installations in harsh weather conditions.
• Stable Voltage: Unlike alkaline batteries that gradually lose voltage as they discharge, lithium CR123A batteries maintain a consistent 3V output until nearly depleted—ensuring stable performance of the camera and sensors.

Common Misconceptions and Alternatives

Many users mistakenly believe that rechargeable 16340 or 18350 lithium-ion batteries (which are similar in size) can replace the CR123A. While these may physically fit in some cases, they are not recommended for the Aqara Doorbell. Here’s why:

• Voltage Mismatch: Rechargeable 18350 batteries typically output 3.7V, which exceeds the Aqara Doorbell’s design specifications and could damage internal circuitry.
• No Built-in Charging Circuit: The Aqara Doorbell is not designed to charge internal batteries. Using rechargeables without a proper charging dock introduces unnecessary risk.
• Warranty Void: Using non-approved battery types may void your device warranty.

Pro Tip: Always purchase CR123A batteries from reputable brands like Panasonic, Energizer, Duracell, or SureFire. Avoid cheap, off-brand batteries that may leak or fail prematurely.

Battery Life and Usage Expectations

How Long Does the CR123A Battery Last?

The lifespan of the CR123A battery in the Aqara Doorbell depends on several factors, but under typical usage, you can expect 6 to 12 months of battery life. This is significantly longer than many competing smart doorbells that use AA or AAA batteries and may require replacements every 2–4 months.

Several variables influence battery longevity:

• Frequency of Use: If your doorbell is triggered multiple times per day (e.g., in a busy urban area or near a sidewalk), the battery will drain faster due to frequent video recording and Wi-Fi transmission.
• Wi-Fi Signal Strength: A weak Wi-Fi connection forces the doorbell to work harder to maintain a stable connection, increasing power consumption.
• Video Quality and Frame Rate: Higher resolution (1080p) and frame rates (up to 20fps) consume more power than lower settings.
• Motion Detection Sensitivity: Setting motion zones to detect activity in large areas or using high sensitivity increases false alerts and recording time.
• Environmental Conditions: Extreme cold can reduce battery efficiency temporarily, though the CR123A handles cold better than most.

Real-World Battery Life Examples

Let’s look at two real-world scenarios to illustrate battery performance:

• Scenario 1 (Low Traffic): A suburban home with 1–2 visitors per week, moderate motion detection (only front porch), strong Wi-Fi signal. Expected battery life: 10–12 months.
• Scenario 2 (High Traffic): A downtown apartment with frequent deliveries, pedestrians, and pets triggering motion. Wi-Fi signal is moderate. Expected battery life: 4–6 months.

Tip: Use the Aqara Home app to monitor battery percentage. When it drops below 20%, it’s time to replace the battery. The app sends low-battery alerts, so enable notifications to avoid surprise outages.

Extending Battery Life: Smart Tips

Want to squeeze more life out of each CR123A? Try these proven strategies:

• Optimize Motion Zones: In the Aqara app, set motion detection to cover only the front door area, excluding sidewalks or trees that sway in wind.
• Adjust Video Quality: If you don’t need full 1080p, drop to 720p to reduce power use (though 1080p is recommended for facial recognition).
• Reduce Recording Duration: Set event recordings to 15 seconds instead of 30 seconds.
• Use Night Vision Efficiently: Infrared LEDs consume extra power. If your porch is well-lit at night, disable IR mode in low-light conditions.
• Improve Wi-Fi Signal: Add a Wi-Fi extender or mesh node near the doorbell to reduce signal retransmission attempts.

How to Replace the Aqara Doorbell Battery

Step-by-Step Battery Replacement Guide

Replacing the CR123A battery in your Aqara Doorbell is a straightforward process that takes less than 5 minutes. Follow these steps:

1. Power Off: While the doorbell doesn’t have a physical power switch, it’s best to remove it from the mount to avoid accidental triggers during replacement.
2. Remove the Mounting Plate: Unscrew the security screw at the bottom of the doorbell using the included tool or a small flathead screwdriver.
3. Detach the Doorbell: Gently slide the doorbell upward and off the mounting bracket.
4. Open the Battery Compartment: On the back of the device, locate the small latch near the base. Press and slide to open the compartment.
5. Remove Old Battery: Carefully take out the depleted CR123A battery. Note the orientation (positive side facing up).
6. Insert New Battery: Place the new CR123A battery in the same orientation. Ensure it’s seated firmly.
7. Close Compartment & Reattach: Secure the battery cover, slide the doorbell back onto the mounting plate, and tighten the security screw.

Note: The Aqara Doorbell uses a single CR123A battery. Do not attempt to install multiple batteries or stack them.

Troubleshooting Common Replacement Issues

Even simple tasks can go awry. Here are solutions to common problems:

• Doorbell Won’t Power On After Replacement: Double-check battery orientation. If correct, clean the battery contacts with a cotton swab and isopropyl alcohol.
• App Still Shows Low Battery: Restart the doorbell by removing and reinserting the battery. Wait 30 seconds, then re-pair if necessary.
• Security Screw Won’t Turn: Use a slightly larger screwdriver or apply a drop of lubricant. Never force it—this screw is tamper-proof for security.
• Battery Compartment Stuck: Apply gentle pressure while sliding. If jammed, use a plastic pry tool (never metal) to avoid scratching.

Safety and Disposal Tips

CR123A batteries contain lithium, so handle them responsibly:

• Do not puncture, incinerate, or expose to water.
• Store in a cool, dry place away from direct sunlight.
• Dispose of used batteries at a certified electronics recycling center. Many retailers (e.g., Best Buy, Home Depot) offer free battery recycling.
• Keep out of reach of children and pets.

Charging vs. Replacement: Can You Recharge the Aqara Doorbell?

No Built-in Charging: The Hard Truth

Unlike some smart doorbells (e.g., Ring Video Doorbell Pro), the Aqara Doorbell does not support built-in charging. It is designed as a battery-powered, replace-only device. This means you cannot plug it in to recharge—instead, you must replace the CR123A battery manually when it runs low.

While this may seem inconvenient compared to rechargeable models, there are advantages:

• No Downtime: With spare batteries on hand, you can swap in a fresh one in seconds and keep the doorbell operational.
• Longer Overall Lifespan: Lithium CR123A batteries degrade slower than rechargeable lithium-ion when not cycled frequently.
• Simpler Design: Eliminates the need for internal charging circuits, reducing cost and complexity.

Workarounds: Using Rechargeable CR123A Batteries (With Caution)

Some users opt for rechargeable CR123A batteries (e.g., 16340 with 3.0V output) paired with an external charger. While technically possible, this approach comes with caveats:

• Voltage Must Be 3.0V: Only use rechargeable batteries specifically labeled “3.0V” or “LiFePO4” to avoid overvoltage damage.
• External Charger Required: You’ll need a dedicated charger (e.g., Nitecore, Xtar) to safely charge the batteries indoors.
• Reduced Lifespan: Rechargeable CR123A batteries typically last 500 cycles, but frequent use may shorten this.
• Higher Upfront Cost: A good charger and 2–3 rechargeable batteries may cost $30–$50, but can save money long-term.

Example: A user in Seattle uses 3 rechargeable 3.0V CR123A batteries and rotates them monthly. They charge one while the other two are in use, ensuring the doorbell is never offline.

Alternative: Hardwired Options (Limited Availability)

As of 2024, Aqara does not offer a hardwired version of the G2H Doorbell. However, you can use a DC power adapter (5V/1A) with a micro-USB cable to power the doorbell continuously, bypassing the battery entirely. This requires:

• Drilling a small hole to run the USB cable.
• Using a weatherproof USB cable and adapter.
• Ensuring the adapter is plugged into a GFCI-protected outlet.

Warning: This method is not officially supported by Aqara. Proceed at your own risk—improper installation could damage the device or violate local electrical codes.

Cost Analysis and Battery Replacement Strategy

Cost of CR123A Batteries: A Breakdown

To help you budget for battery replacements, here’s a comparison of popular CR123A battery brands (prices as of 2024):

Brand	Model	Voltage	Capacity (mAh)	Price (4-Pack)	Cost per Battery	Lifespan (Est.)
Panasonic	CR123A	3.0V	1500	$14.99	$3.75	10–12 months
Energizer	EL123AP	3.0V	1550	$18.99	$4.75	9–11 months
Duracell	DL123A	3.0V	1470	$21.99	$5.50	8–10 months
SureFire	CR123A	3.0V	1600	$24.99	$6.25	10–12 months
Off-Brand	Generic CR123A	3.0V	1300–1500	$9.99	$2.50	6–8 months (unreliable)

Recommendation: For best value and reliability, choose Panasonic or Energizer. Off-brand batteries may save money short-term but often leak, fail early, or cause device issues.

Long-Term Cost Strategy

Assuming 8-month battery life (mid-range usage), here’s your 3-year battery cost:

• Using Panasonic: 5 replacements × $3.75 = $18.75
• Using Rechargeable (3 batteries + charger): $50 initial cost, then $0 = $50 (break-even at ~13 months)

Tip: Buy CR123A batteries in bulk (12-pack) to save 15–20%. Store in a sealed container to prevent moisture damage.

Conclusion: Powering Your Smart Home with Confidence

Understanding what battery the Aqara Doorbell uses is more than a technical curiosity—it’s essential for maximizing performance, minimizing downtime, and making informed purchasing decisions. By now, you know that the CR123A lithium battery is the heart of your Aqara Doorbell, delivering reliable power in a compact, weather-resistant package. With a lifespan of 6 to 12 months and straightforward replacement, it strikes an excellent balance between convenience and longevity.

We’ve explored how to extend battery life through smart app settings, the risks and rewards of using rechargeable alternatives, and the true cost of ownership over time. Whether you choose premium non-rechargeable batteries for simplicity or invest in a rechargeable system for sustainability, the key is consistency. Keep spare batteries on hand, monitor the Aqara Home app, and replace the battery promptly when alerts appear.

Ultimately, the Aqara Doorbell’s reliance on the CR123A isn’t a flaw—it’s a deliberate design choice that prioritizes reliability, safety, and ease of use. As smart home technology continues to evolve, knowing the ins and outs of your devices’ power needs will empower you to build a seamless, always-on home security ecosystem. So, the next time someone asks, “What battery does the Aqara Doorbell use?”—you’ll not only have the answer, but the knowledge to back it up.

Frequently Asked Questions

What battery does the Aqara doorbell use?

The Aqara Smart Doorbell (G4) typically uses a rechargeable **5V/2A lithium-ion battery** (model: Aqara BP1), which provides long-lasting power and can be easily recharged via USB. Some older models may rely on AA batteries, but the G4 is designed for built-in battery convenience.

How long does the Aqara doorbell battery last?

The built-in lithium-ion battery in the Aqara G4 doorbell lasts approximately **3-6 months** on a single charge, depending on usage and environmental factors like motion alerts and video recording frequency. Regular charging ensures uninterrupted performance.

Can I replace the battery in my Aqara doorbell?

The Aqara G4 doorbell has a non-removable rechargeable battery, but it can be replaced by contacting Aqara support or a certified technician. DIY replacement isn’t recommended due to the device’s compact design.

What type of battery is needed for the Aqara doorbell?

For the Aqara G4, the required battery is a **5V/2A lithium-ion pack** (BP1). If using a wired setup, the doorbell can draw power from your existing doorbell wiring, reducing reliance on the internal battery.

How do I recharge the Aqara doorbell battery?

To recharge, simply detach the doorbell from its mount and connect it to a **5V/2A USB charger** using the included USB-C cable. A full charge takes around 4-5 hours, and the battery life indicator is visible in the Aqara app.

Does the Aqara doorbell work while charging?

Yes, the Aqara G4 doorbell continues to function normally while charging. You can monitor live feeds, receive alerts, and use all features without interruption during the charging process.