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Sony Ericsson Xperia Z LIS1502ERPC Replacement Battery 3.7V 2300mAh

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Replaces Sony Ericsson LIS1502ERPC battery for Xperia Z, C6603, and related models.
3.7V, 2300mAh Li-Polymer cell restores full charge capacity to the Xperia Z after extended use degrades the original.
Connector mates directly to the Xperia Z battery slot with standard latch alignment—no adapter needed.
We ran full discharge cycles on the BMS; fuel gauge IC accepted the new cell voltage profile without cutoff errors.
On first charge after installation, disable fast charging for one complete discharge-charge cycle to let the coulomb counter recalibrate against this cell's discharge curve.
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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

3.7V

Amp

2300mAh

Sony Ericsson Xperia Z / C6603 — 3.7V Li-Polymer Replacement Battery (LIS1502ERPC)

This is a 3.7V, 2300mAh Li-Polymer battery for the Sony Ericsson Xperia Z smartphone. It fits the Xperia Z, C6603, Yuga, and L36i, among other variants in the same family. Capacity matches the original LIS1502ERPC specification at 8.51Wh.

  • Xperia Z family fit: The C6603, L36i, and Yuga all share the same battery bay geometry, connector pinout, and BMS handshake protocol as the standard Xperia Z. One cell covers the entire platform.
  • Bench tested on actual hardware: We ran this battery through charge and discharge cycles on the Xperia Z. The BMS accepted the charge IC handshake without fault codes, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
  • Fuel gauge recalibration tip: After fitting this cell, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging is introduced.

Why the Xperia Z reports wrong battery percentage after a cell swap

The Xperia Z uses a fuel gauge IC that builds a discharge model from the previous cell's history. When you fit a new cell, the IC still references that old curve, so the percentage on screen drifts from actual charge state. This is not a fault with the replacement battery — it is a calibration lag in the fuel gauge. Run one full discharge to near 0% and a full charge to 100% without interruption. After that cycle, the IC recalculates its curve against the new cell and percentage reporting stabilises.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff symptom, not a capacity fault. Under heavy load — active LTE modem, bright screen, GPS — the new cell's internal resistance causes a brief voltage drop below the shutdown threshold before the fuel gauge catches it. The phone cuts power to protect the SoC even though the displayed percentage looks safe. Let the phone cool for two minutes, then power it back on. After one full recalibration cycle the fuel gauge learns the cell's sag profile and adjusts the low-voltage warning trigger to account for it — targeting a resting voltage of around 3.5V before shutdown.

Compatible Models

Xperia Z Xperia C6603 Yuga L36i L36h C6602 SO-02E Fusion C6603 C6616 C6606 Xperia C C2304 C2305 S39c S39h

Replaces Part Numbers

LIS1502ERPC US446370 1264-7064

Technical Specifications

Voltage3.7V
Amp Hours2300mAh
Capacity2300mAh
Rate8.51Wh
Net Weight46g /1.62 oz
Gross Weight71g /2.50 oz
Approximate Weight71g /2.50 oz
Dimension 69.25 x 62.28 x 4.35mm

Product Highlights

  • Brand: Sony Ericsson
  • 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 Xperia Z won't power on at all after sitting in a drawer for months with the new battery installed — is the cell dead?

Almost certainly not dead — the BMS has locked out the cell after voltage dropped below 2.5V during storage. Connect the phone to a wall charger (not a PC USB port) and leave it for 20–30 minutes without pressing the power button. The charge IC needs time to trickle current into the locked-out cell before the BMS releases and allows normal charging to resume. If the charging LED doesn't appear within 45 minutes, check that the battery connector is fully seated flat against the board.

Fast charging stopped working the first time I charged the replacement battery — the phone just charges slowly now.

The Xperia Z's charge IC runs a handshake on the first cycle to verify the new cell's BMS response before enabling higher charge current. On the first charge after fitting, standard rate is normal — this is not a fault. Complete one full charge at that slower rate, unplug, and then reconnect. The charge IC re-runs its handshake on the second cycle and typically restores the higher current rate. If fast charging still doesn't engage after the second cycle, check that the USB port and cable support the required current.

The battery percentage jumps around erratically — it'll show 60%, drop to 41%, then jump back up without me doing anything.

This is the fuel gauge IC recalibrating against the new cell's discharge curve. The coulomb counter was trained on the old cell and its reference points no longer match the new chemistry profile. Run two complete discharge-charge cycles without interruption — discharge to the auto-shutdown point, then charge fully to 100%. After the second cycle the coulomb counter resets its reference baseline and percentage reporting steadies. Don't rely on the percentage display for the first two cycles.

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