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Ticwatch Pro 3 SP492929SI Replacement Battery 3.85V 570mAh

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From $36.99 USD $45.99
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Fits Ticwatch Pro 3 smartwatch, replaces OEM battery SP492929SI.
3.85V, 570mAh lithium-polymer cell restores multi-day runtime on this wearable platform.
Magnetic pogo connectors align vertically; no locking tab — seat flush against contact plate.
Bench testing confirmed BMS handshake on first insertion; no fault codes or cutoff.
After installation, place watch on charger immediately and charge to 100% — the fuel gauge IC cannot calibrate without a full cycle from near-zero after a cell swap.
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.

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.

Voltage

3.85V

Amp

570mAh

Ticwatch Pro 3 — 3.85V Li-Polymer Replacement Battery (SP492929SI)

This is a 3.85V, 570mAh lithium-polymer cell for the Ticwatch Pro 3 smartwatch. It replaces the original SP492929SI battery when the watch can no longer hold charge through a full day. Fits the Pro 3 only — confirm your model before ordering.

  • Pro 3 platform fit: The Pro 3 runs a dual-display stack — an OLED layer plus an FSTN always-on layer — both drawing from the same 3.85V rail. This cell matches the original connector, PCM pinout, and physical footprint (28.90 × 25.90 × 5.00mm) that the chassis accepts.
  • Bench tested on actual hardware: We ran the SP492929SI replacement through charge and discharge cycles on the Pro 3 platform. The onboard BMS accepted the cell without fault codes, and the fuel gauge IC tracked state-of-charge correctly after a full conditioning cycle.
  • Post-swap charging on the Pro 3: After fitting this cell, place the watch immediately on its magnetic charger and run it to 100% before first use. The fuel gauge IC on the Pro 3 loses its charge reference during a cell swap and cannot recalibrate without a full charge cycle from near-zero — skipping this causes the percentage to read incorrectly for days.

Why the Pro 3 dual-display draws harder than single-screen watches

The Pro 3 uses Mobvoi's dual-processor architecture — a Snapdragon Wear 4100 for the full OLED mode and an embedded low-power co-processor for the FSTN essential mode. When both layers are active during workouts or navigation, current draw jumps sharply compared to FSTN-only standby. A new cell at full 570mAh capacity handles those peaks cleanly. A degraded original cell at 60–70% usable capacity cannot sustain the voltage under that combined load, which triggers an early low-battery shutdown well before 0% is displayed.

Watch not pairing with phone after battery replacement

Removing the battery cuts power to the BLE radio completely, which closes any active Bluetooth session without a clean disconnect. The phone retains the old pairing entry, but the watch boots fresh with no matching session ID. The two devices fail to reconnect automatically because the bond keys no longer align. Fix this by removing the Ticwatch from your phone's Bluetooth device list entirely, then re-pairing through the Mobvoi app from scratch.

Compatible Models

Pro 3

Replaces Part Numbers

SP492929SI

Technical Specifications

Voltage3.85V
Amp Hours570mAh
Capacity570mAh
Rate2.19Wh
Net Weight9g /0.32 oz
Gross Weight34g /1.20 oz
Approximate Weight34g /1.20 oz
Dimension 28.90 x 25.90 x 5.00mm

Product Highlights

  • Brand: Ticwatch
  • 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 Ticwatch Pro 3 shows 0% and won't turn on after I swapped the battery — did I get a dead cell?

The cell is almost certainly fine. The Pro 3's fuel gauge IC loses its charge reference the moment the old battery is disconnected, so it boots with no valid state-of-charge data and displays 0% — or refuses to power on as a low-battery protection response. Place the watch on its magnetic charger immediately after reassembly and leave it until the display confirms 100%. The gauge recalibrates during that first full charge from near-zero and normal operation resumes.

New battery fitted, but the Pro 3 is draining from 100% to dead in one day — what's pulling that much current?

The two most common culprits on the Pro 3 are continuous heart rate monitoring and the always-on OLED display running simultaneously. Together they can draw enough current to exhaust 570mAh well inside 24 hours if both are enabled at full polling rate. Open the Mobvoi app, switch heart rate monitoring from continuous to on-demand, and set the display to FSTN essential mode for daily wear — OLED only on wrist raise. If drain stays severe after those changes, check that no background app is holding a GPS lock.

The heart rate sensor and GPS seem to be killing the new battery faster than they ever did on the old one — is something wrong with the replacement cell?

This is normal for the first five to seven days after a cell swap. A new lithium-polymer cell starts at a slightly different internal impedance than a worn original, and the power management IC briefly adjusts its current delivery profile to compensate — sensor modules see marginally higher voltage headroom and draw accordingly. Capacity stabilises as the cell completes a few full charge-discharge cycles. If drain is still heavier than expected after a week of normal use, check that GPS is set to "phone GPS" rather than standalone in the Mobvoi app settings.

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