About this replacement
Google Pixel Fold 5G — 3.87V Li-Polymer Replacement Battery (GPDX1)
This 3.87V, 1450mAh (5.61Wh) lithium-polymer cell replaces the original internal battery in the Google Pixel Fold 5G (G0B96 / G9FPL). It restores power delivery to the processor, foldable display stack, and modem. Capacity figures are taken directly from product data — not inferred from web sources.
- Pixel Fold 5G platform fit: The G0B96 and G9FPL share the same voltage rail, connector pinout, and BMS handshake protocol — one cell covers both board revisions without modification.
- Bench tested on actual hardware: We cycled this cell through charge, standby, and load discharge on the Pixel Fold 5G mainboard. The BMS accepted the cell on first recognition, and charge current ramped correctly through CC and CV phases without a fault flag.
- Fuel gauge recalibration on first use: After installation, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before re-enabling fast charging. The Pixel Fold's coulomb counter needs this full cycle to map the new cell's discharge curve accurately.
Sudden shutdown at 20–30% on the Pixel Fold 5G after a cell swap
The Pixel Fold 5G runs a high-resolution foldable panel alongside a 5G modem — two loads that spike current demand hard and fast. A new cell with an uncalibrated fuel gauge IC causes the OS to misread remaining capacity. When voltage drops below roughly 3.5V under that combined load, the BMS triggers an emergency cutoff before the OS ever sees 0%. One full discharge-charge cycle recalibrates the coulomb counter and eliminates most of these mid-percentage shutdowns.
USB-PD fast charging not activating on the first cycle after replacement
On first connection after a cell swap, the charge IC on the Pixel Fold 5G defaults to a low trickle rate while it characterises the new cell's impedance. This is normal BMS behaviour — not a charger fault or a defective replacement cell. The USB-PD handshake and full fast-charge current typically activate on the second or third charge session once the IC has logged baseline cell resistance. Use the original Google 30W charger and cable for these first cycles to avoid protocol mismatch.