Technaxx TX-75 Replacement Battery 3.7V 10050mAh Li-ion
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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Technaxx TX-75 Replacement Battery 3.7V 10050mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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.
Disclaimer
Disclaimer
⚠️ 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.
Technaxx TX-75 Replacement Battery 3.7V 10050mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
10050mAh
Technaxx TX-75 / Sender TX-75 — 3.7V Li-ion Replacement Battery (4652)
This is a 3.7V 10050mAh Li-ion replacement battery for the Technaxx TX-75 and Sender TX-75 wireless home security cameras, also covering the 4648 unit. It matches the OEM part number 4652 and slots into the same physical bay as the original cell. Use it to restore a camera that no longer holds charge or powers on.
- TX-75 / 4648 platform fit: These models share the same 3.7V single-cell architecture, connector pinout, and BMS handshake protocol — which is why one battery covers all three variants listed above.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge passes while monitoring BMS cutoff thresholds. The protection circuit tripped correctly at low-voltage limits and accepted charge without skipping the CC/CV transition.
- First-install power cycle: After fitting this battery, run a manual power cycle through the Technaxx app. The camera firmware must re-register an active cell before motion-event recordings log correctly to cloud storage — skipping this step can cause missed clips even when the camera appears online.
TX-75 going offline in the app after a battery swap
When the TX-75 loses power completely during a battery change, the firmware drops its active session token with the cloud server. The camera comes back on but the app shows it as offline or unresponsive. This is not a battery fault — it is a session registration issue triggered by the power interruption. Open the Technaxx app, remove the device from your account, and re-add it to force a fresh token handshake.
App reporting 0% or wrong battery percentage after install
The TX-75 uses a voltage-threshold indicator, not a fuel-gauge IC, so the percentage reading is derived from resting cell voltage rather than tracked capacity. A freshly installed battery may read 0% or jump erratically until the camera samples a stable resting voltage. Run one full charge cycle through the included charger or solar input until the charge indicator confirms full. After that single cycle the voltage thresholds recalibrate and the percentage display tracks correctly — expect the reading to settle above 3.6V at rest before it shows an accurate figure.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Technaxx
- Manufacturer: CS
- Series: Standard
- Color: Blue
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My TX-75 stops recording mid-clip — is the new battery cutting out?
Yes, but it is usually a BMS trip rather than a defective cell. When the camera reconnects to WiFi mid-recording on a weak signal, the reconnect current spike can push the draw above the protection circuit threshold and the BMS shuts the output. Move the camera closer to your router or access point, or check that your 2.4GHz band is not congested. If the drop-outs stop after improving signal strength, the battery is fine — the BMS was protecting the cell from an unstable load.
The TX-75 night vision cuts out after a few hours of darkness — what is happening?
Sustained IR LED draw overnight is higher than the camera's daytime standby load, and on a degraded original battery this tips the cell voltage below the BMS re-entry threshold. With this replacement cell at full charge the IR array should run through the night without hitting that floor. If night vision still cuts out, check that the camera is fully charged before dusk — the resting voltage should read above 3.7V before nightfall for the BMS to stay live through the sustained IR load.
Motion alerts have stopped triggering since I fitted the new battery — camera looks online though.
This is the firmware registration issue, not a battery or sensor fault. The motion-trigger logging pipeline requires the camera to complete a fresh session handshake after a power interruption. Without it the camera streams and appears online but does not send alert events. In the Technaxx app, go to device settings and run a restart or re-register the unit under your account. Motion alerts should resume within one to two minutes of the camera reconnecting under a valid session token.
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