Positivo Master N100 Replacement Battery 11.1V 4400mAh

Positivo Master N100 / N150 / Premiun 2035 — 11.1V Li-ion Replacement Battery

This is an 11.1V Li-ion replacement battery rated at 4400mAh (48.84Wh) for the Positivo Master N100, Master N150, and Premiun 2035 notebooks. It slots in where the original cell has aged out or failed to hold charge. Physical dimensions are 136.27 × 72.20 × 20.09mm — measure your original before ordering if you are unsure.

• Master N100 / N150 / Premiun 2035 fit: These three models share the same battery bay geometry, connector pinout, and BMS communication protocol, which is why a single cell covers all three. The voltage rail and cell count match the original spec on each platform.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Master N100 and monitored BMS handshake, cutoff voltage, and charge acceptance. The protection circuit responded correctly at both the low-voltage floor and the high-voltage ceiling.
• First-cycle recalibration on the Master N100: After installation, run the laptop on battery alone until it reaches hibernate cutoff, then charge uninterrupted to 100% without unplugging. This forces the BIOS battery-learn cycle to reset against the new cell and clears the false health warning that almost always appears after a cell swap.

BIOS reporting poor battery health immediately after swapping the cell

The BIOS reads health data stored in the old cell's EEPROM and compares it against the new cell's reported state. A fresh cell with no charge history looks wrong to the firmware — it flags it as degraded or unknown. This is not a fault with the replacement. One full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the BIOS enough data to rewrite the learn cycle and clear the warning.

Laptop shuts down hard at 20–30% charge shown on screen

The fuel gauge IC is still calibrated to the old cell's voltage curve. When the new cell hits a steep voltage drop under full CPU and display load, the actual cell voltage falls below the BMS cutoff threshold before the OS gauge reaches 0%. The gauge and the real state of charge are out of sync. Run two or three full discharge-to-hibernate and full-charge cycles — the fuel gauge IC recalibrates against the new cell's curve and the shutdown point shifts back toward 0% where it belongs.