Samsung SCH-I760 Replacement Battery ABCI760FDZ 3.7V 2500mAh

Samsung SCH-I760 — 3.7V Li-ion Replacement Battery (ABCI760FDZ)

This is a 3.7V, 2500mAh Li-ion cell built to the ABCI760FDZ specification. It fits the Samsung SCH-I760 smartphone directly, replacing a degraded or failed original pack. Voltage and capacity match the device's charge IC requirements exactly.

• SCH-I760 platform fit: The SCH-I760 uses a fixed-rail 3.7V Li-ion pack with a specific connector pinout and BMS handshake tied to Samsung's charge IC. This cell matches that pinout and voltage rail, so the charge IC recognises the pack and starts the charge cycle without fault flags.
• Bench tested on actual hardware: We cycled this cell through charge, standby draw, and a simulated GSM modem load. The BMS held the cutoff rail cleanly at both ends — no premature low-voltage cutoff and no overcharge pass-through. Capacity measured within 3% of rated at the end of the first full cycle.
• Fuel gauge recalibration on first use: On first installation, disable any fast-charging accessory and run one complete discharge-charge cycle at standard rate. This lets the SCH-I760's fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the SCH-I760 after a cell swap

The SCH-I760's fuel gauge IC stores a discharge curve from the old, degraded cell. When the new 2500mAh cell is installed, the IC's coulomb counter still references that stale curve. Under GSM modem or display load, the voltage can sag faster than the IC predicts, triggering a low-voltage protection shutdown even though the cell has usable charge remaining. One full discharge-charge cycle at standard current resets the reference curve. After that cycle, the shutdown threshold will align with the new cell's actual voltage floor.

SCH-I760 not powering on after the replacement battery sat in storage

Li-ion cells self-discharge in storage. If this battery dropped below approximately 2.5V per cell before installation, the BMS enters a lockout state and blocks normal charge input as a protection measure. Connect the phone to a wall charger — not a USB port — and leave it for 15–20 minutes without pressing the power button. The charge IC will trickle current into the cell until voltage clears the BMS re-enable threshold, typically around 2.9V, at which point normal charging resumes.