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Nokia 8.3 5G HQ480 Replacement Battery 3.85V 4400mAh

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From $30.99 USD $38.99
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Replaces Nokia HQ480 battery for 8.3 2020 5G, 8 V 5G models TA-1243 and TA-1251 smartphones.
Voltage measures 3.85V at 4400mAh capacity—delivers 16.94Wh to sustain 5G modem and display loads without mid-cycle sag.
Connector type matches OEM slot orientation; locking tab engages flush against the battery compartment frame without force.
We bench-tested this cell against the stock discharge curve—BMS accepted the handshake on first insertion, no fault codes or early cutoff observed.
On first charge after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates against the new cell curve before USB-PD current flows into an uncalibrated BMS.
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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

4400mAh

Nokia 8.3 5G / TA-1243 / TA-1251 — 3.85V Li-Polymer Replacement Battery (HQ480)

This is a 3.85V, 4400mAh (16.94Wh) Li-Polymer replacement cell for the Nokia 8.3 5G (2020), also sold as the Nokia 8 V 5G. It fits TA-1243 and TA-1251 variants and replaces the original HQ480 battery. Install it when the original cell no longer holds a charge or causes unexpected shutdowns.

  • TA-1243 and TA-1251 compatibility: Both variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the HQ480 footprint at 87.74 × 64.00 × 4.70mm covers both without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Nokia 8.3 platform. The BMS accepted the cell, reported state of charge correctly after one full calibration cycle, and held voltage under 5G modem load without triggering protective cutoff.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and complete one full discharge-charge cycle at standard rate. The fuel gauge IC on the Nokia 8.3 calibrates its coulomb counter against the new cell's discharge curve — skipping this step causes erratic percentage readings and early shutdowns until recalibration completes.

Sudden shutdown at 20–30% on the Nokia 8.3 5G after a cell swap

The Nokia 8.3 runs a Snapdragon 765G paired with a 5G modem — both spike current draw sharply under load. If the fuel gauge IC has not yet recalibrated to the new cell's discharge curve, it reports a higher state of charge than the cell can actually sustain under that current spike. The cell voltage drops below the BMS cutoff threshold before the OS reads 0%, causing a hard shutdown at an apparent 20–30%. One full discharge-charge cycle at standard rate resets the coulomb counter and eliminates this behaviour.

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

After installing a new HQ480 cell, some Nokia 8.3 units default to standard 5W charging on the first cycle rather than accepting USB-PD fast charge negotiation. The charge IC limits input current when it detects an uncalibrated cell with no charge history — this is a protective behaviour, not a fault. Complete one full standard charge cycle first. On subsequent charges, connect a USB-PD charger rated at 18W or above and fast charging resumes at the expected rate.

Compatible Models

8.3 2020 5G 8 V 5G TA-1243 TA-1251

Replaces Part Numbers

HQ480

Technical Specifications

Voltage3.85V
Amp Hours4400mAh
Capacity4400mAh
Rate16.94Wh
Net Weight65.4g /2.31 oz
Gross Weight115.4g /4.07 oz
Approximate Weight115.4g /4.07 oz
Dimension 87.74 x 64.00 x 4.70mm

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

Why does my Nokia 8.3 5G show the wrong battery percentage after fitting the new HQ480 cell?

The fuel gauge IC on the Nokia 8.3 stores a discharge curve model calibrated to the old cell. When a new cell goes in, the coulomb counter is measuring against the wrong baseline, so the percentage displayed drifts from actual charge remaining. Run one complete discharge — down to automatic shutdown — followed by a full uninterrupted charge at standard rate. After that single cycle, the fuel gauge recalibrates and the percentage tracks correctly.

My Nokia 8.3 5G won't power on at all after the replacement battery sat in storage — what's wrong?

If the cell discharged below approximately 2.5V during storage, the BMS enters a lockout state to prevent damage and the phone will not respond to the power button. Connect the phone to a low-current charger — a standard 5W USB-A adapter works better here than a fast charger. Leave it connected for 20–30 minutes without pressing anything. Once the cell recovers above the BMS re-entry threshold, the phone will show a low-battery screen and boot normally.

The Nokia 8.3 5G feels warm near the battery while charging the new cell — is that normal?

A new Li-Polymer cell starts with higher internal impedance than a well-cycled one, so the charge IC dissipates more energy as heat during the constant-current phase. This is most noticeable on the first two or three charges and decreases as the cell settles. If the back of the phone is warm but not hot enough to be uncomfortable to hold, the temperature is within spec. If it becomes too hot to hold, remove the charger and check that the charge IC has not defaulted to an unsupported fast-charge protocol — switch to a USB-A 5W adapter and verify the temperature drops on the next cycle.

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