Emporia BAT-C110 Telme C131 Compatible Battery 3.7V 1000mAh

Emporia Telme C131 — 3.7V Li-ion Replacement Battery (BAT-C110)

This is a 3.7V, 1000mAh Li-ion cell built to fit the Emporia Telme C131 basic mobile phone. It matches the OEM part number BAT-C110 and drops into the original battery compartment using the same footprint: 55.50 × 35.10 × 5.50mm. When the original cell no longer holds a charge, this unit restores normal operation.

• Telme C131 and C131 variant fit: Both listed models use the same battery bay, connector pinout, and BMS communication protocol — one cell covers both. The voltage rail sits at 3.7V nominal, consistent across the C131 production run.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the C131 platform. The BMS handshake completed without fault flags, and the protection circuit triggered correctly at low-voltage cutoff — no forced shutdowns mid-cycle.
• Fuel gauge recalibration on first install: After fitting this cell, run one complete discharge to automatic shutoff followed by a full uninterrupted charge before relying on the percentage indicator. The C131's fuel gauge IC was calibrated to the original cell's discharge curve — one full cycle re-anchors it to the new cell.

Why the Telme C131 reports wrong battery percentage after a cell swap

The C131 uses a fuel gauge IC that tracks charge state against a learned discharge curve from the original cell. A new cell has a slightly different internal impedance and discharge profile. Until the IC runs at least one full cycle on the new cell, its coulomb counter is working off stale calibration data. The result is percentage readings that are either inflated early or collapse suddenly — both resolve after that first complete cycle.

Sudden shutdown at 20–30% remaining on the replacement cell

This happens when the cell voltage drops sharply under load — a behaviour called a voltage cliff — before the fuel gauge reaches 0%. On the C131, the modem draws a burst of current during a call or network search; if the cell cannot sustain voltage above the BMS cutoff threshold under that load, the phone shuts off even though the reported percentage looks safe. Check that the cell contacts are clean and seated flat. If the issue continues after one full recalibration cycle, confirm the cutoff voltage is triggering at or below 3.0V per cell.