LG VX4500 Replacement Battery 3.7V 1000mAh LGLI-ADFM

LG VX4500 / VX4510 — 3.7V Li-ion Replacement Battery (LGLI-ADFM)

This is a 3.7V, 1000mAh Li-ion replacement battery for the LG VX4500 and VX4510 feature phones. It replaces OEM part numbers LGLI-ADFM, SBPL0069701, and SBPL0069901. If your original cell no longer holds a charge or the phone shuts off unexpectedly, this is the direct swap.

• VX4500 and VX4510 compatibility: Both the VX4500 and VX4510 share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. Either phone will accept this cell without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the VX4500 platform. The BMS responded correctly to charge termination, and the protection circuit tripped as expected under simulated over-discharge conditions.
• Fuel gauge recalibration on first use: After installing this cell, run one complete discharge down to auto-shutoff, then charge uninterrupted to 100%. The phone's fuel gauge IC was calibrated to your old cell's discharge curve — one full cycle resets that baseline against the new cell.

Why the VX4500 reports wrong battery percentage after a cell swap

The VX4500 uses a basic fuel gauge that tracks charge state by measuring terminal voltage against a stored discharge curve. That curve was built around the original cell's internal resistance profile. A new cell has different impedance characteristics, so the phone maps voltage readings to the wrong percentage. The gauge will read high early in discharge and then drop sharply near the end. One full discharge-to-shutoff and uninterrupted recharge gives the IC enough data to remap against the new cell. After that cycle, percentage readings stabilise.

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

This happens when the fuel gauge still holds its old calibration data and the displayed percentage no longer matches actual cell voltage. Under load — backlight, signal processing, keypad activity — the cell voltage sags below the BMS cutoff threshold before the gauge reaches zero. The phone cuts power even though the display showed charge remaining. Force a full recalibration cycle: drain the phone to automatic shutoff, then charge straight to 100% without interruption. After one complete cycle, the gauge re-anchors to 3.7V nominal and the 2.7V cutoff floor lines up correctly with what the display reports.