ELF0160 Vodafone VPA Touch Replacement Battery 3.7V 1100mAh

Vodafone VPA Touch — 3.7V Li-ion Replacement Battery (ELF0160)

This is a 3.7V, 1100mAh Li-ion cell replacing the original battery in the Vodafone VPA Touch smartphone. It matches the OEM part numbers ELF0160, 35H00095-00M, and FFEA175B009951. Install it when your original cell no longer holds a charge or the phone shuts down unexpectedly under load.

• VPA Touch fit confirmation: The VPA Touch uses a specific connector pinout and BMS handshake tied to the ELF0160 spec. This cell matches that pinout and the charge voltage ceiling the phone's charge IC expects — no BMS rejection on power-up.
• Bench tested on actual hardware: We cycled this cell through full charge and load discharge on the VPA Touch platform. The BMS negotiated correctly with the phone's charge IC and held stable voltage under both screen and radio load without mid-cycle cutoff.
• Fuel gauge recalibration on first use: After fitting this cell, run one full discharge to auto-shutoff followed by a complete charge before enabling any fast or high-current charging. The VPA Touch fuel gauge IC calibrates its coulomb counter against that first discharge curve — skipping this step causes erratic percentage readings for the first several cycles.

Why the VPA Touch reports wrong battery percentage after a cell swap

The VPA Touch uses a fuel gauge IC that stores a discharge curve from the previous cell. When a new cell goes in, the stored curve no longer matches the actual cell chemistry, so the percentage readout drifts — often reading 20–30% higher than real capacity. The IC needs at least one full discharge-to-shutoff and full recharge cycle to remap its internal model against the new cell. Until that cycle completes, the percentage display should be treated as approximate. After one full cycle, the readout stabilises and tracks accurately.

Sudden shutdown at 20–25% on the replacement cell

This happens because the cell voltage drops sharply under modem transmit or screen backlight load — faster than the fuel gauge IC predicts. The phone's low-voltage protection trips at roughly 3.0V per cell before the percentage counter reaches zero. It is not a faulty battery; it is the gauge IC still running the old cell's discharge curve. Complete one full calibration cycle as described above. If shutdowns persist past two full cycles, check that the battery connector is fully seated — a high-resistance connection amplifies voltage sag under load and triggers the same cutoff.