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Amazfit GTS 3 Replacement Battery 3.87V 240mAh PL462023

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From $28.99 USD $35.99
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Fits Amazfit GTS 3 and GTS 3 A2035 smartwatches, replacing original part number PL462023.
Voltage 3.87V, capacity 240mAh delivers the energy density required for multi-day fitness tracking and continuous heart rate monitoring on this platform.
Connector is a two-pin pogo contact set; alignment matters — contacts sit flush against the watch PCB with no mechanical locking tab.
We bench-tested this cell in a GTS 3 motherboard simulator; the BMS accepted the full charge cycle without fault codes or early cutoff events.
After fitting the new cell, place the watch on its magnetic charger immediately and charge to 100% before first use — the fuel gauge IC cannot calibrate without a full cycle from near-zero after a cell swap.
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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

3.87V

Amp

240mAh

Amazfit GTS 3 / A2035 — 3.87V Li-Polymer Replacement Battery (PL462023)

This 3.87V, 240mAh Li-Polymer cell is a direct replacement for the Amazfit GTS 3 smartwatch (model A2035). It fits the compact 21.60 × 19.40 × 4.40mm battery bay and uses the same OEM part number PL462023. Swap it in when the original cell no longer holds a meaningful charge across a full day of use.

  • GTS 3 and A2035 compatibility: Both model designations reference the same hardware revision. The battery bay dimensions, connector tab orientation, and BMS handshake are identical across that production run — this cell meets all three.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a GTS 3 unit. The BMS accepted the cell without fault codes, and the fuel gauge IC registered correctly after a full charge cycle from near-zero.
  • Post-swap charge requirement for GTS 3: After fitting this cell, place the watch on its magnetic charger immediately and run it to 100% before wearing it. The fuel gauge IC on the GTS 3 loses its voltage reference during cell removal and cannot recalibrate without one complete charge cycle from near-zero.

Why the GTS 3 shows 0% and refuses to power on after a battery swap

The GTS 3 uses a coulomb-counting fuel gauge IC that stores its reference state in volatile memory. When you disconnect the old cell, that reference is lost. The IC wakes with no baseline and defaults to reporting 0%, which triggers a low-battery lockout in the firmware. This is not a fault with the new cell. Place the watch on charge immediately after reassembly and leave it until the charge indicator shows 100%.

New battery draining in one day when the old one used to last several

A fresh cell exposes how power-hungry the GTS 3's active feature set actually is — the old degraded cell was masking the draw by shutting off early. Continuous heart rate monitoring, always-on display mode, and frequent wrist-raise detection together pull steady current that compresses real-world usage. Check the watch settings and disable always-on display if multi-day use matters more than the persistent clock face. GPS-based workout tracking is a separate, higher-draw event — expect accelerated drain on days with recorded sessions.

Compatible Models

GTS 3 A2035

Replaces Part Numbers

PL462023

Technical Specifications

Voltage3.87V
Amp Hours240mAh
Capacity240mAh
Rate0.93Wh
Net Weight4g /0.14 oz
Gross Weight29g /1.02 oz
Approximate Weight29g /1.02 oz
Dimension 21.60 x 19.40 x 4.40mm

Product Highlights

  • Brand: Amazfit
  • 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 GTS 3 won't pair with my phone after replacing the battery — is the watch broken?

No. Removing the battery cuts power to the BLE stack, which drops the active Bluetooth session and can corrupt the pairing record on the watch side. On your phone, go to Bluetooth settings, forget the Amazfit GTS 3 device, then re-open the Zepp app and pair from scratch. The watch itself does not need to be reset — just re-pair through the app.

The heart rate sensor seems to be draining the new battery much faster than it drained the old one — is the replacement cell faulty?

Not faulty — expected. The original degraded cell had elevated internal resistance, which caused the HR sensor's optical emitters to draw less current before voltage sag tripped a shutdown. A new cell at full capacity presents lower impedance, so the sensor runs at full power and draws more current per session than you were used to seeing. This normalises after the first week as the BMS characterises the new cell's impedance profile. If drain remains extreme after seven days, check whether continuous HR monitoring is enabled and reduce the polling interval in the Zepp app settings.

The magnetic charger doesn't seem to be making contact after I reassembled the GTS 3 — no charging animation appears.

This happens when the internal components shift slightly during reassembly and push the charge contact pads fractionally out of alignment. Remove the watch from the charger, wipe both the charger puck and the watch charge contacts with a dry cloth, then reseat the watch squarely on the magnet. If the animation still does not appear, open the back carefully and confirm the battery connector tab is fully seated — a half-connected tab can prevent the charge circuit from completing even when the charger is aligned correctly.

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