Nokia 3 HE319 Replacement Battery 3.85V 2600mAh

Nokia 3 / TA-1020 / TA-1028 / TA-1032 — 3.85V Li-Polymer Replacement Battery (HE319 / HE330)

This is a 3.85V, 2600mAh lithium-polymer cell built to fit the Nokia 3 smartphone and its regional variants — TA-1020, TA-1028, and TA-1032. It replaces OEM part numbers HE319 and HE330, which Nokia used across that model range. Physical dimensions are 68.50 × 59.80 × 4.00mm, matching the original cell envelope.

• Nokia 3 variant coverage: The TA-1020, TA-1028, and TA-1032 are regional SKUs of the same Nokia 3 hardware platform. They share the same battery bay geometry, connector pinout, and charge IC handshake — so one cell covers all three without modification.
• Bench tested on actual hardware: We ran this cell on the Nokia 3 platform and tracked BMS communication through a full charge cycle. The protection circuit responded correctly to the MediaTek charge IC — charge termination triggered at 4.35V and cutoff engaged at 3.0V under load, consistent with OEM spec.
• Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The Nokia 3 uses a coulomb-counter-based fuel gauge that is still calibrated to the old cell's discharge curve. One full cycle at standard current lets it remap to the new cell before high-current charging begins.

Sudden shutdown at 20–30% on the Nokia 3 after a cell swap

This is a voltage cliff problem, not a capacity problem. A fresh lithium-polymer cell has a steeper voltage-discharge curve than a worn cell, so the fuel gauge IC underestimates remaining charge and triggers a low-voltage shutdown earlier than expected. The MediaTek SoC in the Nokia 3 pulls high current during LTE transmission bursts, which causes momentary voltage sag that the uncalibrated gauge misreads as a near-empty cell. Run two full discharge-charge cycles at standard charge rate and the shutdowns will stop as the coulomb counter aligns to the new cell curve.

Nokia 3 reporting wrong battery percentage after replacement

The Nokia 3's fuel gauge IC stores learned capacity data from the original cell. After a cell swap, that stored data no longer matches the new cell's actual discharge profile, so the percentage readout drifts — often showing 50% then jumping to 15% within minutes. This is not a fault with the replacement cell. Charge the phone to 100% using the standard charger, use it until it shuts down on low battery, then charge back to 100% without interruption. After that single full cycle, the coulomb counter resets its reference and percentage accuracy returns.