Gionee S6s Replacement Battery BL-N3150Z 3.85V 3150mAh

GIONEE S6s / Elife S6s — 3.85V Li-Polymer Replacement Battery (BL-N3150Z)

This is a 3150mAh, 3.85V lithium-polymer cell replacing the original BL-N3150Z in the GIONEE S6s and Elife S6s smartphones. It fits the same physical cavity and connects to the same charge IC. Capacity is rated at 12.13Wh from product data — not an estimate.

• S6s and Elife S6s compatibility: Both model variants use the same battery bay dimensions, connector pinout, and BMS handshake voltage. The cell measures 84.40 × 62.30 × 3.40mm — physical fit is confirmed against this footprint.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the S6s platform. The BMS accepted the cell without fault flags, and the charge IC completed a full constant-current to constant-voltage transition at the correct cutoff.
• First-cycle calibration on the S6s: After installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC on the S6s is calibrated against the old cell's discharge curve — running one slow cycle first lets the coulomb counter reset against the new cell before fast-charge current is applied.

Sudden shutdown at 20–30% on the GIONEE S6s after a cell swap

This happens because the fuel gauge IC still holds the old cell's voltage-to-capacity curve in memory. When the phone reaches roughly 3.5V under modem or screen load, the new cell's voltage drops faster than the IC expects — it reads the cliff as empty and shuts down. The fix is a full calibration cycle: drain the phone to automatic shutdown, then charge uninterrupted to 100% without unplugging. After one complete cycle, the coulomb counter recalibrates and the reported percentage tracks the actual cell state.

Phone warm near the battery area during the first few charges

A new lithium-polymer cell has slightly higher internal impedance than a broken-in one. During the first two or three charges, the charge IC pushes current into a higher-resistance cell, which converts more energy to heat than usual. This is normal and settles after the cell conditions. If warmth continues past the third full charge cycle or the phone becomes hot to the touch, check that the adhesive backing on the cell is fully seated — a lifted cell traps heat against the board. Normal operating temperature during charging should stay below 40°C.