Bben G16S Replacement Battery 14.8V 4000mAh Li-Polymer

Bben G16S / G16X / G17 / G16A — 14.8V Li-Polymer Replacement Battery

This is a 14.8V, 4000mAh (59.2Wh) lithium-polymer replacement battery for the Bben G16S, G16X, G17, and G16A laptops. It restores mobile power to the notebook when the original cell has degraded or failed. No OEM part number is listed for this SKU — match your existing battery label against the fit models above before ordering.

• G16S / G16X / G17 / G16A compatibility: These four Bben models share the same 14.8V four-cell Li-Polymer architecture, identical connector pinout, and the same physical footprint at 212.70 × 68.35 × 13.50mm. The BMS on each platform uses the same charge termination voltage, so one cell works across the entire group.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the G16S platform. The BMS accepted the replacement without rejecting the handshake, charge current ramped normally through CC into CV, and the protection circuit tripped correctly at undervoltage cutoff.
• Post-install calibration cycle: After fitting this battery, run the laptop down to hibernate cutoff on battery alone — no AC — then charge uninterrupted to 100% without using the machine. This gives the BIOS fuel gauge IC a full reference sweep against the new cell and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting battery health as poor immediately after installation

The Bben G16S stores cycle count, design capacity, and health data in EEPROM on the old battery's BMS board. When a new cell goes in, that EEPROM data is gone. The BIOS reads the blank or mismatched values and flags the battery as degraded or unknown — even though the cell is new. This is not a fault with the replacement. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the fuel gauge IC write fresh calibration data and the health warning clears on the next boot.

Laptop shuts off at 20–30% charge shown on screen

This is a voltage-cliff symptom. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge expects — the gauge still reads 20–30% but the actual cell voltage has already hit the BMS low-voltage cutoff threshold. It is most common in the first few cycles on a new cell before the fuel gauge IC has calibrated its discharge curve. Run two full discharge-to-hibernate and full charge cycles without interruption. After calibration, the percentage reading and the actual cutoff voltage align, and the early shutdowns stop.