AudioVox PPC5050 Replacement Battery 3.7V 1700mAh

AudioVox PPC5050 — 3.7V Li-Polymer Replacement Battery (35H10008-80)

This 3.7V, 1700mAh Li-Polymer battery replaces the OEM cell in the AudioVox PPC5050 smartphone. It matches the original part number 35H10008-80 and fits the physical bay without modification. Capacity is 6.29Wh — identical to the factory specification.

• PPC5050 fitment: The PPC5050 uses a thin Li-Polymer pouch cell at 94.33 x 50.53 x 3.49mm. That form factor is narrow enough that even a small dimensional deviation causes connector misalignment. This cell matches those dimensions exactly, so the flex connector seats fully against the board contact.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the PPC5050 platform. The BMS accepted charge current without flagging an error state, and the fuel gauge IC tracked cell voltage through the full discharge curve without dropping into cutoff prematurely.
• Fuel gauge recalibration on first use: Disable any fast-charge accessory for the first full discharge-charge cycle after installation. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins pushing current into an uncalibrated state.

Why the PPC5050 reports wrong battery percentage after a cell swap

The PPC5050 uses a fuel gauge IC that builds its capacity model from learned discharge cycles on the original cell. When a new cell goes in, that learned model no longer matches the actual voltage-to-capacity curve of the replacement. The OS reads a stale curve and reports percentage that drifts from reality — often reading higher than actual charge. One complete discharge to auto-shutoff followed by a full charge resets the coulomb counter and forces the IC to relearn against the new cell.

Sudden shutdown at 20–30% charge remaining

This happens when the modem or display pulls a short high-current burst and the cell voltage sags below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. It is a voltage cliff, not a capacity failure. The fuel gauge IC triggers it because its state-of-charge estimate is still calibrated to the old cell. Run one full discharge-charge cycle, then confirm the phone sustains load at 3.6V or above before the gauge hits 20%.