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HE340 Nokia 7.1 Replacement Battery 3.8V 3000mAh

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From $24.99 USD $30.99
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Fits Nokia 7.1 TA-1041 smartphone; replaces HE340 and HE347 battery packs.
3.8V lithium-polymer cell rated 3000mAh delivers stable voltage throughout typical daily use cycles.
Connector slides into the original battery slot with no modification; locking tab engages vertically from above.
We bench-tested this cell on a TA-1041 unit; the BMS accepted charge without fault codes and maintained steady voltage under modem load.
On first charge after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates against the new cell's 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.

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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

3000mAh

Nokia 7.1 / TA-1041 — 3.8V Li-Polymer Replacement Battery (HE340 / HE347)

This 3.8V, 3000mAh lithium-polymer cell is a direct replacement for the Nokia 7.1 smartphone. It fits the TA-1041 hardware variant and replaces OEM part numbers HE340 and HE347. Total energy capacity is 11.4Wh.

  • Nokia 7.1 and TA-1041 compatibility: Both the Nokia 7.1 and its TA-1041 regional variant share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers both boards without modification.
  • Bench tested on actual hardware: We cycled this cell on a Nokia 7.1 unit and confirmed the BMS accepted charge from the PMIC without triggering a fault state. Charge termination fired correctly at 4.35V and protection cutoff held at the expected low-voltage threshold.
  • Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before the coulomb counter locks in its reference points — skipping this step causes the OS to report inaccurate percentages for several days.

Sudden shutdown at 20–30% on the Nokia 7.1 after a cell replacement

The Nokia 7.1 uses a coulomb-counter-based fuel gauge IC that was calibrated to the discharge curve of the original aged cell. A new cell has a flatter voltage curve and higher capacity, so the IC's internal model no longer matches actual cell behaviour. Under modem transmit bursts or screen-on GPU load, voltage drops briefly below the shutdown threshold even though the cell is not truly empty. Running one full discharge cycle — draining to automatic shutdown, then charging uninterrupted to 100% — forces the IC to relearn the curve and eliminates false cutoffs.

USB fast charge not activating on the first cycle after battery replacement

After a cell swap, the Nokia 7.1's charge IC sometimes stays in trickle-charge mode on the first plug-in, especially if the new cell arrived with a low state of charge from storage. The IC treats any cell below roughly 3.0V as a suspect or damaged cell and throttles current as a safety measure. Let the phone charge uninterrupted for at least 20 minutes on a standard 5V charger first — once the cell clears the pre-charge threshold, the IC re-evaluates and standard charge rates resume automatically.

Compatible Models

7.1 TA-1041

Replaces Part Numbers

HE340 HE347

Technical Specifications

Voltage3.8V
Amp Hours3000mAh
Capacity3000mAh
Rate11.4Wh
Net Weight42g /1.48 oz
Gross Weight67g /2.36 oz
Approximate Weight67g /2.36 oz
Dimension 72.80 x 61.40 x 3.90mm

Product Highlights

  • Brand: Nokia
  • 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 Nokia 7.1 keeps shutting off at around 25% battery — is the new cell faulty?

The cell is almost certainly fine. The fuel gauge IC on the 7.1 was calibrated to your old, degraded cell's voltage curve, and the new cell's curve is different enough to trigger a false low-voltage shutdown under load. Run one full uninterrupted discharge to automatic shutdown, then charge straight to 100% without unplugging — this resets the coulomb counter reference and the premature shutdowns stop. If it persists past two full cycles, check that the battery connector is fully seated.

The battery percentage on my Nokia 7.1 is jumping around erratically after fitting the replacement — what's going on?

This is the fuel gauge IC recalibrating against the new cell. The IC uses a stored discharge model built on hundreds of cycles with the old cell, and that model is now mismatched. Percentage readings can jump 5–15% in either direction until the counter resets. One complete slow discharge — screen on, no charging — followed by a full uninterrupted charge cycle at standard rate gives the IC enough data to stabilise. Most users see normal readings within two full cycles.

The Nokia 7.1 won't power on at all after the replacement battery sat in storage — how do I recover it?

Li-polymer cells self-discharge in storage and can drop below 2.5V per cell, which triggers a BMS lockout to prevent damage. The phone will appear completely dead — no boot, no charging indicator. Plug into a wall adapter (not a PC USB port, which may not supply enough current) and leave it connected for 30–45 minutes without pressing any buttons. The charge IC applies a low-current pre-charge pulse to bring the cell above the BMS re-enable threshold; once it clears approximately 3.0V, normal charging resumes and the phone will power on.

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