Samsung SCH-I515 Droid Charge Replacement Battery EB-L1D7IVZ 3.7V 1800mAh

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

This is a 3.7V, 1800mAh Li-ion replacement battery for the Samsung SCH-I515 (Droid Charge). It fits directly in place of the original EB-L1D7IVZ cell and restores power to the display, modem, and processor. Swap it when the original cell can no longer hold a usable charge.

• SCH-I515 fit: The Droid Charge uses a dedicated battery bay with a specific connector pitch and contact orientation. This cell matches those physical and electrical specs — the BMS handshake between the battery and the phone's charge IC will complete normally on first insertion.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the SCH-I515 platform. The BMS communicated correctly with the phone's fuel gauge IC, and the charge IC accepted the cell without faults at both standard and high-current charge rates.
• Fuel gauge recalibration on first use: After installing this battery, disable fast charging for the first full discharge-charge cycle. The fuel gauge IC on the Droid Charge calibrates against the cell's discharge curve — running one slow cycle first lets it map the new cell accurately before fast-charge current is applied.

Why the Droid Charge reports wrong battery percentage after a cell swap

The SCH-I515 uses a coulomb counter in its fuel gauge IC to track charge state. That counter was calibrated against the original cell's internal resistance and discharge curve. A new cell has different impedance characteristics, so the stored curve no longer matches actual voltage behaviour. The IC reads a percentage based on stale data until it completes one full discharge-charge cycle and rewrites its reference table. Run the phone from 100% down to automatic shutdown once, then charge uninterrupted to 100% — the gauge will track correctly after that.

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

This happens when the modem or display pulls a current spike and the cell voltage drops sharply below the BMS cutoff threshold — even though the reported percentage looks safe. On the SCH-I515, LTE modem bursts and screen-on events together can pull enough current to cause a momentary voltage sag below 3.2V on an uncalibrated cell. The BMS interprets that sag as an empty cell and cuts power. Run one full calibration cycle as described above — once the fuel gauge IC maps the new cell's voltage cliff accurately, the reported percentage and the actual cutoff point will align.