About this replacement
Gigabyte gSmart i Series — 3.7V Li-ion Replacement Battery (GLH-H01)
This 3.7V 950mAh Li-ion cell replaces the original battery in the Gigabyte gSmart i, g-Smart i+, and gSmart i (128) smartphones. It fits all three variants sharing the GLH-H01 form factor, OEM part number A2K40-EBR270-C0R. Use the capacity figure from product data — 950mAh (3.52Wh) — when comparing against your original.
- gSmart i variant compatibility: The gSmart i, g-Smart i+, and gSmart i (128) share the same connector pinout, cell dimensions (56.30 × 50.87 × 6.54mm), and BMS handshake — that is why one part number covers all three.
- Bench tested on actual hardware: We cycled this cell through charge and discharge under load. The BMS held cutoff at the correct low-voltage threshold and accepted charge current without tripping protection on the first cycle.
- Fuel gauge recalibration on first use: After installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter to the new cell's actual discharge curve before any high-current session begins.
Sudden shutdown at 20–30% on the gSmart i after a cell swap
A new cell has a slightly different voltage-vs-capacity curve than the aged cell the fuel gauge IC was calibrated to. When the phone demands peak current — active screen, modem transmitting, GPS — the cell voltage sags faster than the IC predicts. The IC sees a voltage reading that maps to a sudden cliff on the old curve and immediately shuts down to protect the cell. One full slow discharge cycle from 100% to 0% forces the coulomb counter to relearn the curve and eliminates most premature cutoffs.
Phone reads wrong battery percentage after replacement
The gSmart i's fuel gauge IC stores calibration data built against the original cell's impedance and discharge profile. After swapping to a fresh cell with lower internal resistance, those stored values no longer match reality — the percentage display drifts or jumps. Charge the phone fully to 100% until the charging indicator stops, then discharge to auto-shutdown without interruption. After that single cycle the IC resets its reference points and the percentage reading stabilises.