Samsung SCH-I515 Replacement Battery EB-L1D7IVZ 3.7V 1400mAh

Samsung SCH-I515 — 3.7V Li-ion Replacement Battery (EB-L1D7IVZ)

This is a 3.7V, 1400mAh Li-ion cell for the Samsung SCH-I515 smartphone. It replaces OEM part EB-L1D7IVZ and fits directly into the SCH-I515 battery bay. Total energy capacity is 5.18Wh.

• SCH-I515 cell compatibility: The SCH-I515 uses a single-cell 3.7V nominal Li-ion pack with a three-pin connector that carries voltage, ground, and a thermistor signal. This replacement matches that pinout and communicates with the phone's charge IC over the same thermal line.
• Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on the SCH-I515 board. The BMS accepted charge current without flagging an error, and the phone's charge IC held the cell at 4.2V cutoff without overrun.
• Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one complete discharge down to automatic shutdown, then charge to 100% uninterrupted. This gives the fuel gauge IC a clean reference discharge curve against the new cell before resuming normal use.

Why the SCH-I515 shuts down suddenly at 20–30% after a cell replacement

The SCH-I515 uses a coulomb counter-based fuel gauge IC that was calibrated to the discharge curve of the original cell. A new cell with a slightly different internal resistance profile will cause the fuel gauge to misread remaining capacity. When the modem or display draws a high current burst, the actual cell voltage can drop below the BMS cutoff threshold even though the reported percentage looks healthy. The fix is one full discharge-to-shutdown followed by a full charge — this recalibrates the coulomb counter to the new cell's actual curve.

Phone won't power on after the replacement cell sat in storage

Li-ion cells self-discharge in storage, and if the cell voltage drops below approximately 2.5V, the BMS enters a lockout state to prevent damage. The SCH-I515 will show no response — no charging animation, no boot. Connect the phone to a wall charger rated at least 1A and leave it for 20–30 minutes without pressing any buttons. The charge IC will trickle current into the cell to bring it above the BMS recovery threshold, typically around 2.9V, at which point the phone will resume normal charging and power on.