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Huawei P7 HB3543B4EBW Replacement Battery 3.8V 2460mAh

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From $23.99 USD $29.99
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Replaces OEM HB3543B4EBW battery for Huawei P7 and Ascend P7 variants.
3.8V 2460mAh lithium-polymer cell delivers 9.35Wh to sustain processor, modem, and display loads.
Connector aligns with P7 rear casing slot; locking tab seats flush against frame shoulder.
Bench test showed BMS fuel gauge IC accepted charge curve without early termination or error codes.
On first cycle after install, disable fast charging for one complete discharge-charge cycle to recalibrate the coulomb counter against the new cell curve before high-current operation resumes.
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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

3.8V

Amp

2460mAh

Huawei P7 / Ascend P7 Series — 3.8V Li-Polymer Replacement Battery (HB3543B4EBW)

This is a 3.8V, 2460mAh (9.35Wh) lithium-polymer replacement battery for the Huawei P7 smartphone. It fits the P7, Sophia, Ascend P7-L09, and Ascend P7 variants. It replaces OEM part number HB3543B4EBW when the original cell has degraded or failed.

  • P7 and Ascend P7 platform fit: All listed variants — including Sophia and the L09 network variant — share the same physical cell envelope, connector pinout, and BMS handshake. The 113.41 × 41.91 × 3.36mm footprint matches the factory bay without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on P7 hardware. The BMS communicated correctly with the charge IC on first connection, and the device accepted a full charge without flagging an unrecognised cell error.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's actual discharge curve before high-current charging pushes current into an uncalibrated cell.

Why the P7 reports wrong battery percentage after a cell swap

The P7 uses a fuel gauge IC that builds its capacity model from the original cell's discharge curve. When a new cell goes in, the IC is still referencing the old degraded curve. This causes the reported percentage to drift from actual charge state — often showing full when the cell is not, or dropping suddenly near 20–30%. One full discharge-charge cycle, without interruption, rewrites the reference curve to match the new cell. After that cycle, percentage reporting stabilises.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops below the SoC threshold faster than the fuel gauge predicts under load. The P7's modem and display together can draw enough current to pull cell voltage below 3.4V in milliseconds — the protection circuit interprets this as a critical undervoltage and cuts power. The percentage displayed at shutdown looks high because the fuel gauge IC hasn't yet recalibrated to the new cell. Run one full uninterrupted discharge-charge cycle and confirm the cell holds above 3.6V under screen-on load before concluding the cell is faulty.

Compatible Models

P7 Sophia Ascend P7-L09 Ascend P7 Ascend P7-L00 Ascend P7-L05 Ascend P7-L10 Ascend P7-L07 Ascend P7-L11

Replaces Part Numbers

HB3543B4EBW

Technical Specifications

Voltage3.8V
Amp Hours2460mAh
Capacity2460mAh
Rate9.35Wh
Net Weight39g /1.38 oz
Gross Weight74g /2.61 oz
Approximate Weight74g /2.61 oz
Dimension 113.41 x 41.91 x 3.36mm

Product Highlights

  • Brand: Huawei
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The P7 powers on but shuts down the moment I open the camera or start a call — battery shows 25% when it dies. Is this a faulty cell?

This is a voltage cliff, not a faulty cell. Under the combined current draw of the modem and camera, the cell voltage drops faster than the fuel gauge can track — the protection circuit sees undervoltage and cuts power before the displayed percentage reaches zero. The fuel gauge IC is still calibrated to your old degraded cell, so 25% on screen does not reflect real charge state on the new cell. Run one full uninterrupted discharge down to auto-shutdown, then charge to 100% without interruption — the coulomb counter recalibrates and shutdowns at inflated percentages should stop.

After fitting the new battery, Huawei's fast charging isn't working — it's only charging on standard current. What's wrong?

On the first cycle after a cell swap, the charge IC on the P7 sometimes defaults to standard current until it completes one handshake negotiation with the new BMS. This is normal behaviour and not a fault with the cell. Disconnect the charger, power the phone off completely, then reconnect your Huawei-compatible fast charger. If fast charge still doesn't engage after a full power-off reconnect, complete one full standard charge cycle first — the protocol typically re-enables on the second charge.

The phone won't turn on at all after the replacement battery sat in a drawer for a few months before installation. Is it dead?

Lithium-polymer cells self-discharge in storage, and if the cell dropped below approximately 2.5V per cell during that time, the BMS will have entered a lockout state to prevent damage. The phone will not power on from this state through a normal charge attempt. Connect the phone to a low-current charger — 5V/500mA USB is sufficient — and leave it for 20–30 minutes without attempting to power it on. This trickle input is enough to bring the cell above the BMS recovery threshold, after which normal charging resumes.

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