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Nest Hello 3.7V 280mAh Replacement Battery 1ICP7/17/26

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From $23.99 USD $29.99
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Fits Google Nest Hello doorbell model NC5100US, replacing OEM part 1ICP7/17/26.
3.7V 280mAh lithium-polymer cell restores full camera and audio power after capacity fade.
Connector slides straight into the battery slot with a single retention tab lock.
We bench-tested this cell in the Nest Hello platform—BMS accepted the charge handshake cleanly.
After installation, power cycle the doorbell once through the Google Home app so firmware registers the new cell before motion recording logs to cloud correctly.
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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.

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🔹 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

280mAh

Nest Hello NC5100US — 3.7V Li-Polymer Replacement Battery (1ICP7/17/26)

This 3.7V, 280mAh Li-Polymer cell replaces the original battery in the Nest Hello video doorbell. It fits the NC5100US, C1241290, and Vido Doorbell Wired variants. Same voltage and footprint as the factory cell — no modifications needed.

  • NC5100US and C1241290 compatibility: Both models share the same 3.7V power rail, connector pitch, and BMS handshake protocol. The 28.20 × 16.65 × 6.60mm form factor fits the battery bay in all three listed variants without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Nest Hello platform. The BMS accepted the cell without error flags, held voltage within spec under camera-active and two-way audio loads, and did not trigger low-voltage cutoff during motion-event bursts.
  • First-install power cycle: After fitting this cell, perform one full power cycle through the Nest app before relying on motion recording. The firmware must register the new cell before motion event logs sync correctly to cloud storage — skipping this step causes missed clips.

Camera going offline in the app after battery swap

Swapping the battery on the Nest Hello clears the active session token the app holds for that device. The doorbell reboots, but the app does not automatically re-establish the connection — it waits for a handshake that never completes. This leaves the device showing as offline even though the hardware is powered and functional. Fix this by opening the Nest app, navigating to the device settings, and removing then re-adding the doorbell to force a new session token exchange.

App reporting 0% or incorrect charge percentage after install

The Nest Hello uses a voltage-threshold indicator — not a fuel gauge IC — to estimate charge level. A new cell sitting at storage voltage reads outside the thresholds the firmware expects, so the app displays 0% or an inaccurate figure immediately after install. Run one complete charge cycle through the doorbell's wired connection before trusting the percentage shown. After a full charge and a single discharge under normal use, the voltage thresholds recalibrate and the app displays an accurate level — confirm by checking the app shows above 3.6V at rest.

Compatible Models

Hello NC5100US C1241290 Vido Doorbell Wired

Replaces Part Numbers

1ICP7/17/26

Technical Specifications

Voltage3.7V
Amp Hours280mAh
Capacity280mAh
Rate1.04Wh
Net Weight5.6g /0.20 oz
Gross Weight30.6g /1.08 oz
Approximate Weight30.6g /1.08 oz
Dimension 28.20 x 16.65 x 6.60mm

Product Highlights

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

Frequently Asked Questions

My Nest Hello stops recording mid-clip — the footage just cuts off partway through a motion event. What's happening?

The combined current spike from the IR LEDs and the processor during an active recording event can briefly exceed the BMS current threshold on a marginal cell. When the original battery ages, its internal resistance rises enough that this spike causes the BMS to trip and cut power momentarily, ending the clip. This replacement cell has lower internal resistance, which keeps the voltage from sagging far enough to trigger that cutoff. After installing, run one full charge cycle and confirm clips complete without interruption on the next three motion events.

Night vision works for the first hour after dark, then the camera seems to sleep and I get no footage until morning — what causes that?

Sustained IR LED draw overnight pulls more current than the camera draws during the day. On a degraded cell, the voltage sags under that continuous load until the BMS enters protection mode and shuts the camera down — it looks like the camera slept but it actually cut out. The doorbell's wired connection should trickle-charge the battery to offset that draw, but a worn cell can't hold enough voltage buffer to keep up. After swapping this cell, check that the wired power connection is secure — the cell and the wired supply work together, and if wired current drops below ~4V input, the cell carries the full IR load alone.

My Nest Hello shows as online in the app but motion alerts stopped firing completely — is that a firmware issue or the battery?

Motion detection on the Nest Hello relies on a brief processor and IR sensor wake cycle that draws a short current spike. When the battery voltage sits near the low-voltage threshold, the BMS suppresses that wake spike to protect the cell — the camera stays online at idle but can't execute the higher-draw motion trigger. This is not a firmware fault; it's the BMS doing its job on a cell that can no longer hold adequate resting voltage. Replace the cell, perform a power cycle through the app, and test by walking in front of the doorbell — alerts should resume within one to two motion events once resting voltage stabilises above 3.6V.

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