Amazing T3 Replacement Battery 3.7V 1100mAh Li-ion

Amazing T3 — 3.7V Li-ion Replacement Battery

This is a 3.7V, 1100mAh Li-ion cell that fits the Amazing T3 smartphone. It replaces the original battery when the phone no longer holds a charge or fails to power on. Capacity figure is taken directly from the product specification — 4.07Wh total energy.

• Amazing T3 fitment: The T3 uses a compact 84.00 × 34.00 × 4.00mm cell with a 3.7V nominal rail. The connector and cell dimensions match the original bay — no modifications needed to seat the battery correctly.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The BMS accepted the charge IC handshake cleanly, and protection circuits tripped correctly at both low-voltage cutoff and overcharge thresholds.
• First-cycle fuel gauge calibration: On first use after installation, disable fast charging if your T3 supports it. Run one full discharge down to auto-shutoff, then charge to 100% on standard current. This gives the fuel gauge IC a clean reference cycle against the new cell's discharge curve before high-current charging begins.

Why the T3 reports wrong battery percentage after a cell swap

The T3's fuel gauge IC builds its discharge model against the original cell over hundreds of cycles. When you install a new cell, that learned curve no longer matches the actual voltage-to-capacity relationship of the replacement. The IC will read state-of-charge from a mismatched map, so the percentage shown on screen drifts from reality. One full discharge-to-shutoff cycle followed by a complete charge resets the coulomb counter and lets the gauge relearn against the new cell.

Sudden shutdown at 20–30% on the T3 after replacement

This happens when the cell's internal resistance causes the terminal voltage to sag below the cutoff threshold under load — typically when the modem transmits or the screen brightness peaks. The fuel gauge still shows 20–30% because it hasn't caught up to the real voltage collapse. It is not a faulty battery; it is the fuel gauge IC working from an uncalibrated curve. Run two full discharge-charge cycles and the shutoffs should move back toward the expected low-percentage range near 5%.