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Nokia BV-5QW iCOM Replacement Battery 3.8V 2200mAh

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From $27.99 USD $34.99
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Fits Nokia iCOM, Lumia 929, Lumia 929+, and RM927 devices — direct replacement for OEM part BV-5QW.
3.8V, 2200mAh capacity delivers the voltage and charge density this single-cell platform requires for calling and app load.
Connector slides straight into the battery slot with no locking tab — orientation marked on the cell casing.
We bench-tested the BMS against the iCOM's fuel gauge IC; BMS accepted charge on first cycle with no faults.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve.
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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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

2200mAh

Nokia iCOM / Lumia 929 Series — 3.8V Li-ion Replacement Battery (BV-5QW)

The BV-5QW is a 3.8V, 2200mAh (8.36Wh) Li-ion cell that fits the Nokia iCOM, Lumia 929, Lumia 929+, and RM927. This battery powers the device's internal components, including the modem, display, and SoC. It is a direct OEM part number match to the original BV-5QW specification.

  • Lumia 929 platform fit: The iCOM, Lumia 929, Lumia 929+, and RM927 all share the same battery bay dimensions, connector pinout, and BMS handshake protocol. Swapping between these models does not require an adapter or firmware change — the cell communicates directly with the device's charge IC.
  • Bench tested on actual hardware: We ran this cell on a Lumia 929 and monitored the BMS through a full charge cycle. The protection circuit responded correctly to charge termination at 4.2V and did not trip during modem-load draw spikes. Charge IC handshake completed on the first cycle without fault flags.
  • Fuel gauge recalibration after install: On first use after installation, disable fast charging and run one complete discharge-charge cycle to standard rate. This allows the fuel gauge IC to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the Lumia 929 after a cell swap

This is a voltage cliff issue, not a capacity defect. When the fuel gauge IC is still calibrated to the old cell's discharge curve, it misreads state-of-charge on the new cell. Under modem or display load, the new cell's voltage drops faster than the IC expects at that percentage point. The device interprets this as a critically low voltage event and shuts down even though nominal capacity remains. One full discharge-charge cycle at standard rate forces the coulomb counter to reset against the new cell's actual curve — after that, the percentage readout tracks correctly.

USB-PD fast charge not triggering on the first cycle after replacement

After a cell swap, some Nokia charge ICs require the battery BMS to complete one standard-rate handshake before accepting a fast-charge protocol request. If you plug into a fast charger immediately after install, the charge IC may fall back to 5V/0.5A trickle rate and stay there for the session. Unplug, wait 10 seconds, and reconnect — or use a standard 5V charger for the first full cycle. Fast charging typically activates normally from the second cycle onward once the BMS has logged a completed charge event.

Compatible Models

iCOM Lumia 929 Lumia 929+ RM927 Lumia 930

Replaces Part Numbers

BV-5QW

Technical Specifications

Voltage3.8V
Amp Hours2200mAh
Capacity2200mAh
Rate8.36Wh
Net Weight42g /1.48 oz
Gross Weight67g /2.36 oz
Approximate Weight67g /2.36 oz
Dimension 66.96 x 51.28 x 5.46mm

Product Highlights

  • Brand: Nokia
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Nokia Lumia 929 worked fine for two days after replacing the battery, but now it shuts off at around 25% — what's happening?

The fuel gauge IC is still running on the discharge curve it mapped for the old cell. At 25%, the new cell's voltage drops under modem or screen load faster than the IC predicts, triggering a low-voltage shutdown before the actual charge is exhausted. This is a calibration gap, not a faulty cell. Run one full discharge down to automatic shutdown, then charge uninterrupted to 100% at standard rate — the coulomb counter will reset to the new cell's curve and the cutoff should stop.

The phone won't power on at all after the replacement battery sat in a drawer for a few months — is the cell dead?

Most likely the BMS has locked out due to deep discharge — cells that drop below approximately 2.5V per cell trigger a protection cutoff that blocks normal power-on. Connect the phone to a standard 5V wall charger (not a fast charger or PC USB port) and leave it for 20–30 minutes without pressing the power button. The charge IC needs to trickle current into the cell to bring voltage above the BMS recovery threshold before the device will boot. If the charging indicator appears within that window, the cell is recovering — let it reach at least 10% before powering on.

The phone gets noticeably warm near the battery during the first few charges — is that normal with a new cell?

A new cell with slightly higher internal impedance draws more resistive heat from the charge IC during the first few cycles compared to a broken-in cell. This is expected and the temperature typically normalises after two or three full charge cycles as the cell's impedance settles. If the warmth is concentrated at the back panel near the battery bay and not at the charging port, it is coming from the cell, not a cable or port fault. Monitor through the first three cycles — if the heat persists or the phone becomes hot to hold, check that the replacement cell dimensions match the BV-5QW spec (66.96 x 51.28 x 5.46mm) and that the battery contacts are seated flat.

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