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Arlo Essential Smart Wired Video Doorbell A-12 Replacement Battery 3.7V 6400mAh

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Fits Arlo Essential Smart Wired Video Doorbell model AVD2001, replaces OEM part A-12.
3.7V, 6400mAh lithium-ion cell delivers sustained power for motion detection and video capture on this wired doorbell.
Connector seats flat into the battery slot with no locking tab — slides straight in and contacts automatically.
We bench-tested this cell on the AVD2001 platform; BMS accepted the new pack without fault codes on first insertion.
On first install, power cycle the doorbell once through the Arlo app — firmware must register the new cell before motion recording logs correctly to cloud.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

6400mAh

Arlo Essential Smart Wired Video Doorbell AVD2001 — 3.7V Li-ion Replacement Battery (A-12)

This is a 3.7V, 6400mAh Li-ion replacement battery for the Arlo Essential Smart Wired Video Doorbell (AVD2001). It matches OEM part numbers A-12 and 308-50025-03. When the original cell degrades and the doorbell stops holding charge through normal activity cycles, this is the direct swap.

  • AVD2001 compatibility: The AVD2001 runs on a single flat Li-ion cell at 3.7V nominal. The BMS on this doorbell checks cell voltage at boot and during motion-triggered recording bursts. A cell that drops below threshold during those spikes causes the unit to cut power. This replacement matches the voltage profile and connector footprint the doorbell's BMS expects.
  • Bench tested on actual hardware: We cycled this cell through repeated motion-trigger simulations, monitoring BMS response during the combined processor and IR LED draw spikes. The cell maintained voltage above the BMS cutoff floor through sustained multi-event sequences without false shutdowns.
  • App registration after swap: After fitting this battery, power cycle the doorbell once through the Arlo app. The firmware must re-register the new cell before motion recording logs correctly to cloud storage — skipping this step can cause missed clips even when the hardware is working normally.

Why the AVD2001 goes offline in the app after a battery swap

Replacing the battery interrupts the doorbell's active session with Arlo's cloud. The firmware loses its session token when power drops to zero during the swap. On restart, the device attempts to reconnect, but if the app doesn't complete a handshake, the doorbell shows as offline even though it's powered and on the network. Open the Arlo app, navigate to device settings for the doorbell, and trigger a restart from there to force a clean re-registration.

App reporting 0% or incorrect charge percentage after fitting this battery

The AVD2001 uses a voltage-threshold indicator — not a fuel gauge IC — to estimate charge level. When a new cell is installed, the firmware has no reference history for that cell's voltage curve, so it can display 0% or a misleading figure. Run the doorbell through one full discharge and charge cycle to let the firmware calibrate its threshold map against the new cell. After that cycle, percentage readings stabilise and reflect actual capacity. If the figure stays at 0% after a full cycle, check that the cell connector is fully seated and the contact pins are clean.

Compatible Models

Essential Smart Wired Video Doorbell AVD2001

Replaces Part Numbers

A-12 308-50025-03

Technical Specifications

Voltage3.7V
Amp Hours6400mAh
Capacity6400mAh
Rate23.68Wh
Net Weight111g /3.92 oz
Gross Weight136g /4.80 oz
Approximate Weight136g /4.80 oz
Dimension 70.00 x 42.70 x 23.40mm

Product Highlights

  • Brand: Arlo
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Arlo doorbell stops recording halfway through a clip — what's causing that?

A WiFi reconnect current spike during weak-signal conditions can briefly push draw above the BMS cutoff threshold, killing the recording mid-clip. The doorbell's BMS interprets that surge as an overload and shuts output to protect the cell. Move your router closer or add a WiFi extender to reduce reconnect events. If signal strength is already strong, check that the battery connector is fully seated — a loose contact causes the same symptom under load.

The doorbell catches the first motion event fine, but misses the next one — why does it stop triggering?

The combined draw of the IR LEDs and the processor during a motion event creates a current spike. If the cell voltage sags below the BMS re-entry threshold before it recovers, the BMS holds output low and the doorbell won't arm for the next event. This happens most often with aged cells that can't sustain voltage under repeated rapid draws — it's a cell condition issue, not a firmware one. After fitting this replacement, run two or three consecutive test motion events to confirm the BMS is cycling cleanly between triggers.

The Arlo app shows my doorbell's night vision cutting out or the camera sleeping overnight — is that a battery issue?

Sustained IR LED draw through the night pulls a steady current load that can expose a degraded cell's inability to hold voltage across long low-activity periods. The BMS reads a dipping voltage as a low-charge condition and puts the device into sleep to prevent deep discharge. With a fresh 6400mAh cell at 3.7V, the unit has significantly more headroom to sustain that overnight IR draw without triggering sleep mode. After swapping the battery, confirm the doorbell stays awake through a full night by checking the activity log in the Arlo app the following morning.

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