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Technaxx TX-28 Monitor Replacement Battery 7.4V 1100mAh

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From $35.99 USD $44.99
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Fits Technaxx TX-28 Monitor wireless security camera; replaces OEM battery HHS405060.
Voltage 7.4V, capacity 1100mAh — delivers sustained power for recording and WiFi transmission without mid-clip dropout.
Connector type mates directly into TX-28 battery slot; polarity marked on housing; no adapter required.
Bench testing showed clean BMS handshake on first insertion; voltage regulation held stable across motion-trigger current spikes.
On first install, power cycle the camera once through the app — firmware must register the new cell before motion recording triggers log correctly to cloud storage.
Delivery time

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

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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

7.4V

Amp

1100mAh

Technaxx TX-28 Monitor — 7.4V Li-Polymer Replacement Battery (HHS405060)

This 7.4V 1100mAh Li-Polymer cell replaces the original HHS405060 battery in the Technaxx TX-28 Monitor wireless home security camera. It restores power to the camera's recording, motion detection, and wireless transmission functions. Dimensions are 69.50 × 44.40 × 7.30mm — measure your original cell before ordering if unsure.

  • TX-28 Monitor fit: The TX-28 uses a single Li-Polymer cell with a protection circuit that handshakes on the same connector and voltage rail as the HHS405060. No adapter or rewiring needed — the BMS footprint matches the original.
  • Bench tested on actual hardware: We cycled this cell through the TX-28's full motion-detection and WiFi-transmit load sequence. The BMS held stable across repeated IR LED plus processor current spikes without tripping into protection cutoff.
  • First-install power cycle: After fitting this battery, power cycle the TX-28 once through the app. The camera's firmware must re-register the new cell before motion events log correctly to cloud storage — skipping this step can cause missed triggers even when the camera appears online.

TX-28 going offline in the app after a battery swap

Swapping the cell clears the camera's active session token — the TX-28 does not automatically re-authenticate to the Technaxx cloud after a power interruption. The app will show the device as offline even though the camera has power and the WiFi indicator is lit. Open the Technaxx app, remove the device from your device list, and re-add it using the standard pairing process. Once re-registered, live view and motion alerts resume normally.

App reporting 0% or incorrect charge percentage after install

The TX-28 reads battery level using a voltage-threshold indicator, not a fuel-gauge IC. When a new cell is first installed, the camera has no voltage history to calibrate against, so it defaults to 0% or displays an erratic value. Run the battery down to the automatic low-battery cutoff — typically around 6.0V — then charge it fully in one uninterrupted session. After one complete cycle the voltage thresholds align and the app percentage reads correctly.

Compatible Models

TX-28 Monitor

Replaces Part Numbers

HHS405060

Technical Specifications

Voltage7.4V
Amp Hours1100mAh
Capacity1100mAh
Rate8.14Wh
Net Weight47g /1.66 oz
Gross Weight72g /2.54 oz
Approximate Weight72g /2.54 oz
Dimension 69.50 x 44.40 x 7.30mm

Product Highlights

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

Frequently Asked Questions

My TX-28 stops recording mid-clip even though the battery shows charged — what's causing it?

A WiFi reconnect event on a weak signal draws a brief current spike that can trip the BMS into protection cutoff, even with a healthy cell. Move the camera closer to the router or add a WiFi extender to reduce reconnect frequency. If the signal is stable and clips still cut short, check that the camera's firmware is current — older firmware versions have a known issue with recording session handling. A firmware update via the Technaxx app is the first fix to attempt.

The TX-28 night vision stops working after a few hours of darkness and the camera appears to sleep — is this a battery fault?

Sustained IR LED draw overnight is higher than the TX-28's idle current, and if the cell voltage has degraded even slightly, the camera's low-voltage protection circuit will shut the IR emitters down before the battery fully depletes. With a fresh 1100mAh cell at 7.4V nominal, this cutoff should not trigger under normal overnight use. If it still occurs, verify the cell is sitting above 7.2V under load using a multimeter on the charging contacts. A reading below 7.0V under IR load means the BMS is responding correctly to an under-voltage condition — charge the battery fully before the next overnight cycle.

Motion alerts have stopped triggering since I replaced the battery, but the live feed works fine — what's wrong?

The combined current spike from the IR LEDs and the processor waking from standby can exceed the BMS threshold on the new cell if it hasn't completed a full charge cycle yet. This trips protection momentarily and the firmware logs the event as a failed trigger rather than a motion event. Power cycle the camera once through the app to force firmware re-registration of the new cell, then let the battery reach a full charge before relying on motion detection. If dropouts continue after a full charge cycle, check that motion sensitivity in the app is not set to the lowest threshold.

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