About this replacement
Philips Xenium X710 — 3.7V Li-ion Replacement Battery (AM1900AWM)
This is a 3.7V, 1500mAh Li-ion battery for the Philips Xenium X710 smartphone. It replaces part number AM1900AWM and fits directly into the X710's battery bay. Use this when the original cell has degraded, holds little charge, or has failed completely.
- Xenium X710 fit: The X710 uses a fixed connector pinout and a BMS handshake tied to the AM1900AWM cell spec. This replacement matches that voltage rail and communication protocol so the phone's charge IC accepts the cell without error flags.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on the X710 platform. The BMS responded correctly at both ends of the charge curve — no premature cutoff at the top and no false-low shutdown near the bottom.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging starts pushing current into an uncalibrated cell.
Why the Xenium X710 reports wrong battery percentage after a cell swap
The X710's fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, that stored model no longer matches the actual cell chemistry. The IC interpolates percentage from voltage alone until it recalibrates, which causes the display to read high or low by 10–20%. One full discharge-to-shutdown followed by an uninterrupted charge to 100% resets the coulomb counter and restores accurate reporting.
Sudden shutdown at 20–30% on the replacement cell
This happens when the cell voltage drops below the BMS cutoff threshold under load — typically modem transmit bursts or screen-on draw — even though the gauge still reads 20–30%. The new cell's internal resistance is slightly different from the worn original, so the voltage sag under load is steeper than the IC expects. The phone interprets the momentary voltage dip as a dead cell and cuts power. Run one full calibration cycle first; if shutdowns persist, check that the battery contacts are clean and seated flat — a poor contact raises effective resistance and worsens the sag.