About this replacement
Samsung Galaxy Nexus / GT-i9250 — 3.7V Li-ion Replacement Battery (EB-L1F2HBU)
This is a 3500mAh, 3.7V Li-ion cell for the Samsung Galaxy Nexus smartphone, also sold as the GT-i9250 and Nexus Prime. It replaces OEM part numbers EB-L1F2HBU, EB-L1F2HVU, and EB-L1F2KVK. The original cells from the 2011 launch are well past typical lithium-ion service life, so capacity loss and voltage sag under load are common.
- Galaxy Nexus / GT-i9250 / Nexus Prime fit: All three model designations use the same physical cell bay, connector pinout, and BMS handshake voltage. The EB-L1F2 series covers the full retail and carrier variant range without connector or firmware differences.
- Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on a Galaxy Nexus unit. The BMS accepted charge current without error, reported cell voltage correctly at each SOC step, and released the protection circuit cleanly on power-up.
- Fuel gauge recalibration on first install: On first use after swapping this cell, disable any fast-charge or power-saving mode and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before the OS begins using those readings for shutdown thresholds.
Sudden shutdown at 20–30% on the Galaxy Nexus after a cell swap
The Galaxy Nexus uses a coulomb-counter fuel gauge IC that was calibrated to the original cell's internal resistance and discharge curve. A new 3500mAh cell has different impedance characteristics, so the gauge's voltage-cliff model doesn't match reality — it triggers an emergency shutdown before the cell is actually depleted. This typically shows up as an abrupt power-off anywhere between 15% and 35% reported charge. One full discharge cycle from 100% to automatic shutdown, followed by a full uninterrupted charge, gives the IC enough data to rebuild its internal table. After that cycle, shutdown thresholds stabilise at the correct low-voltage floor of approximately 3.2V per cell.
Phone won't power on after the replacement cell sat in storage
Li-ion cells shipped in storage-safe partial charge can drop below 2.5V per cell if left unused for several months. At that voltage, the BMS protection circuit locks out charge current entirely to prevent plating damage — the phone appears completely dead and won't respond to USB. To recover, connect the phone to a wall charger (not a PC USB port, which often can't supply the trickle current required) and leave it for 20–30 minutes without pressing the power button. Most BMS circuits on this cell will accept a slow-recovery trickle at this point and unlock full charge current once cell voltage climbs back above 2.9V.