HTC X7500 ATHE160 Replacement Battery 3.7V 2000mAh

HTC X7500 / Advantage X7500 — 3.7V Li-ion Replacement Battery (ATHE160)

This 3.7V, 2000mAh Li-ion battery replaces the original ATHE160 cell in the HTC X7500, X7501, Advantage X7500, and Athena 100. It restores full operational capacity to handsets where the original cell has degraded through charge cycles. Voltage and dimensions match OEM spec: 73.39 × 54.60 × 5.50mm.

• X7500 / Athena platform compatibility: The X7500, X7501, Advantage X7500, and Athena 100 share the same battery bay dimensions, connector pinout, and BMS handshake protocol — which is why they all run on the same ATHE160 cell. Swapping between these models requires no adapter.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the X7500 platform. The BMS accepted charge current from the first cycle, reported state-of-charge to the OS, and held voltage under screen and modem load without tripping the low-voltage cutoff early.
• First-cycle fuel gauge calibration: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC in the X7500 is calibrated to the old cell's discharge curve — one full cycle lets it recalibrate against the new cell before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on a replacement cell in the X7500

The X7500's fuel gauge IC tracks battery state using a coulomb counter seeded by the original cell's discharge curve. A new cell with a slightly different internal resistance profile can cause the reported percentage to diverge from actual cell voltage. Under modem or display load, the cell voltage drops faster than the gauge expects, and the phone shuts off before the reported percentage reaches zero. This is a calibration gap, not a faulty battery. Run two full discharge-charge cycles with fast charging off — by the end of the second cycle, the coulomb counter re-anchors to the new cell's actual voltage floor.

Device not powering on after the replacement battery was left uncharged in storage

Li-ion cells shipped or stored at low state-of-charge can drop below 2.5V per cell during extended storage. When cell voltage falls below that threshold, the BMS on the X7500 enters lockout mode and blocks normal charge current to prevent damage. Plugging into a standard charger in this state produces no response — the phone stays off. Connect to a 5V USB source and leave it for 20–30 minutes without pressing the power button; the charge IC applies a trickle recovery current that brings the cell back above the BMS re-enable threshold, typically around 2.9V, after which normal charging resumes.