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Huawei Nova HB405979ECW Replacement Battery 3.82V 2900mAh

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From $23.99 USD $29.99
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Fits Huawei Nova and Nova Dual Sim models, replaces OEM battery HB405979ECW.
Supplies 3.82V and 2900mAh to restore full capacity on aged or depleted cells.
Connector seats flush into the Nova battery slot with standard polarity alignment tabs.
We ran discharge curves on the bench — BMS stabilized within normal parameters, no cutoff anomalies.
On first charge after installation, disable fast charging for one complete discharge-charge cycle to let the fuel gauge IC recalibrate against the new 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

3.82V

Amp

2900mAh

Huawei Nova Series — 3.82V Li-Polymer Replacement Battery (HB405979ECW)

This 3.82V, 2900mAh Li-Polymer battery replaces the HB405979ECW cell in the Huawei Nova and Nova Dual SIM, including CAN-L11 and CAN-L13 variants. It fits the original battery bay and connects to the same charge IC and fuel gauge circuit as the factory cell. Swap it when the original cell degrades, swells, or can no longer hold a usable charge across a full day.

  • Nova CAN-L11 / CAN-L13 platform fit: These models share the same 3.82V nominal rail, the same HB405979ECW connector footprint, and the same BMS handshake with Huawei's charge IC. One cell covers the full Nova variant list because the hardware platform does not change between single-SIM and Dual SIM configurations.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a CAN-L11 unit, confirmed BMS initialisation, verified the protection circuit tripped correctly at the low-voltage cutoff threshold, and checked that the charge IC accepted the cell without fault flags on the first cycle.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's actual discharge curve before high-current charging is applied to an uncalibrated cell.

Why the Nova reports wrong battery percentage after a cell swap

The fuel gauge IC on the Nova stores a learned discharge curve from the old cell. When a new cell goes in, that stored curve no longer matches the actual voltage profile of the replacement. The IC reads voltage, applies the old map, and outputs a percentage that doesn't reflect real charge state. One complete discharge-to-charge cycle forces the coulomb counter to reset its baseline against the new cell, after which percentage readings stabilise.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem radio or screen backlight draws a current spike that pulls cell voltage below the BMS cutoff threshold — even though the reported percentage looks safe. A fresh cell with an uncalibrated fuel gauge is especially prone to this because the IC doesn't yet know where the actual voltage cliff sits on the new discharge curve. Run the phone through a full calibration cycle first, then check if shutdowns continue. If they do after calibration, verify the cell resting voltage sits above 3.7V with a multimeter before reinstalling.

Compatible Models

Nova Nova Dual Sim CAN-L11 CAN-L13 Y5 2017 Y5 2017 Dual Sim MYA-L02 MYA-L22 Y6 2017 Y6 2017 Dual Sim MYA-L41 Honor Changwan 6 Honor Changwan 6 Dual SIM TD-LTE MYA-TL10 MYA-AL00 Nova Young 2017 Nova Young 4G Nova Young 4G LTE MYA-L11 MYA-L23 MYA-L03 Nova Smart Honor 6C Y5 2018 Y5 2018 Dual SIM Y5 2018 Dual SIM LTE DRA-LX3 DRA-L23 Y5 2018 LTE DRA-L03 DRA-L01 DRA-L02 DRA-LX1 DRA-L21 DRA-LX2 DRA-L22 Y5 Prime 2018 Y5 Prime 2018 LTE Y6 Pro 2017 Y6 Pro 2017 Dual SIM SLA-TL00 SLA-L02 P9 Lite Mini SLA-L22 SLA-L03 AMN-LX9 Y5 2019 Y6 2019 MDR-LX1 Honor 6A DLI-TL20 DLI-AL10 DIG-L01 Enjoy 6S Honor Changwan 7 Honor Changwan 7 Dual SIM Honor Changwan 7 Dual SIM TD-LTE DUA-AL00 Honor Play 7 DUA-TL00 Honor 7S Honor 7S Dual SIM Honor 7S Dual SIM TD-LTE DUA-LX2 DUA-L22

Replaces Part Numbers

HB405979ECW

Technical Specifications

Voltage3.82V
Amp Hours2900mAh
Capacity2900mAh
Rate11.08Wh
Net Weight43g /1.52 oz
Gross Weight93g /3.28 oz
Approximate Weight93g /3.28 oz
Dimension 77.50 x 57.80 x 3.80mm

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 Huawei Nova won't power on at all after the replacement battery sat in a drawer for a few weeks — is the cell dead?

Most likely the cell discharged below the BMS lockout threshold, which sits around 2.5V per cell on Li-Polymer packs. The protection circuit opens and the phone sees no power even though the cell isn't permanently damaged. Plug into a wall charger — not a USB port — and leave it for 20–30 minutes without pressing the power button. If the charge IC recovers the cell, the boot logo will appear on its own.

Fast charging stopped working on the Nova after fitting the replacement battery — the phone charges, but slowly.

On the first cycle after a cell swap, Huawei's charge IC sometimes negotiates at a lower current rate until it has confirmed the cell's impedance is within expected range. This is normal behaviour and not a fault with the battery. Run one full slow charge to completion, then reconnect the original fast charger. If fast charging still doesn't kick in after that cycle, check the USB-C port for debris and confirm the charger outputs at least 5V/2A — the protocol handshake won't step up on underpowered adapters.

The battery percentage jumps erratically — it reads 45%, then skips to 60%, then drops to 30% within minutes.

Erratic percentage jumps are a fuel gauge IC calibration issue, not a faulty cell. The IC is still referencing the discharge curve it learned from the old battery, so voltage readings get mapped to incorrect percentages. Drain the phone fully until it shuts itself off, then charge uninterrupted to 100% without unplugging early. After that single complete cycle the coulomb counter recalibrates, and percentage readings should track smoothly within a few percent of actual charge state.

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