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HB426489ECW Huawei Honor V20 Replacement Battery 3.85V 3900mAh

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From $26.99 USD $33.99
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Fits Huawei Honor V20 and replaces OEM battery HB426489ECW or HB426489EEW.
This 3.85V 3900mAh Li-Polymer cell matches the original pack voltage and capacity exactly.
Connector slides onto the phone's contact pad; orientation marked on the plastic tab.
We bench-tested the BMS on a PCT-AL10 board — no cutoff errors, stable discharge curve.
On first full cycle after installation, charge without fast-charge enabled to let the fuel gauge IC recalibrate against the new cell's discharge profile before high-current charging resumes.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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We ship your order same day if you buy it before 4 PM EST.

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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

3900mAh

Huawei Honor V20 / View 20 — 3.85V Li-Polymer Replacement Battery (HB426489ECW)

This is a 3900mAh Li-Polymer cell built to replace the original HB426489ECW / HB426489EEW battery in the Huawei Honor V20, View 20, PCT-TL10, and PCT-AL10. It runs at 3.85V nominal and delivers 15.02Wh. If your phone is shutting down unexpectedly, losing charge rapidly, or the original cell has swollen, this cell slots into the same footprint.

  • PCT-TL10, PCT-AL10, Honor V20, View 20 compatibility: These model variants share the same battery bay dimensions (85.80 × 63.10 × 3.96mm), the same 3.85V single-cell architecture, and the same BMS connector pinout — which is why one part number covers the full range.
  • Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on the Honor V20 platform and confirmed the BMS handshake, charge termination at 4.35V, and low-voltage cutoff behaviour matched OEM spec without triggering protection faults.
  • Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate — this gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins on an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the Honor V20 after a cell swap

This happens when the fuel gauge IC is still running the discharge curve it learned from the old, degraded cell. The new cell hits a voltage cliff under modem or display load that the IC does not expect at that reported percentage. The phone interprets the voltage drop as empty and cuts power. One full discharge to automatic shutdown, followed by a full charge without interruption, resets the coulomb counter and clears this behaviour.

Huawei fast charge not activating on first cycle after replacement

Huawei's proprietary charging protocol negotiates with the battery BMS on the first connection. A new BMS may not complete that handshake immediately if the cell voltage is below the threshold the charge IC expects at startup. Plug in using the original Huawei charger and cable — third-party cables often lack the correct impedance for protocol negotiation. If fast charge still does not activate after the first full cycle, check that the connector is fully seated, as even slight misalignment breaks the data pin contact at 3.85V nominal.

Compatible Models

Honor V20 PCT-TL10 PCT-AL10 View 20 PCT-LX9 PCT-L29 Enjoy 10S AQM-AL00 AQM-TL00

Replaces Part Numbers

HB426489ECW HB426489EEW

Technical Specifications

Voltage3.85V
Amp Hours3900mAh
Capacity3900mAh
Rate15.02Wh
Net Weight53g /1.87 oz
Gross Weight103g /3.63 oz
Approximate Weight103g /3.63 oz
Dimension 85.80 x 63.10 x 3.96mm

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

My Honor V20 shows 25% battery and then just turns off — is this the replacement cell or a software problem?

This is a fuel gauge calibration issue, not a faulty cell. The coulomb counter inside the phone is still mapped to your old battery's degraded discharge curve, so it misjudges where the new cell's voltage cliff sits under load. Run one complete discharge to automatic shutdown and then charge fully without interruption — the IC recalibrates against the new cell's actual curve and the shutdowns stop.

The phone feels warm near the battery area during the first few charges after fitting the HB426489ECW — is that normal?

A new high-impedance cell generates slightly more heat during initial charge cycles than a broken-in cell does. The charge IC pushes current into a cell it has not yet characterised, which raises internal resistance losses temporarily. This settles after two or three full cycles. If the warmth is concentrated at the USB port rather than the rear panel, check the cable — a worn cable increases contact resistance and shifts the heat source to the connector rather than the cell itself.

My Honor V20 won't power on at all after the replacement battery sat unused for a few months — what do I do?

Extended storage below 2.5V per cell triggers BMS lockout, which is a hard protection state that blocks all output. Connect the phone to the original Huawei charger and leave it for 20–30 minutes without pressing the power button — the charger trickle-feeds current through the protection circuit until cell voltage climbs above the 2.8V recovery threshold. Once the charging indicator appears on screen, the BMS has exited lockout and normal charging can resume.

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