Verizon HPP-GS1 Replacement Battery 3.85V 3000mAh

Verizon HPP-GS1 / Hot Pepper Ghost — 3.85V Li-Polymer Replacement Battery (H2019GS1)

This is a 3.85V, 3000mAh lithium-polymer battery for the Verizon HPP-GS1, also sold as the Hot Pepper Ghost. It replaces OEM part number H2019GS1. Swap it when the original cell no longer holds enough charge to get through a typical day of calls, data, and screen-on time.

• HPP-GS1 and Hot Pepper Ghost compatibility: Both names refer to the same handset on the same board revision. The connector pinout, cell dimensions (83.50 × 63.30 × 3.70mm), and BMS handshake protocol are identical across both SKUs, so this cell fits without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the HPP-GS1 board. The BMS accepted the cell on first contact, charge current stepped correctly from trickle to CC to CV, and the protection circuit tripped at the expected cutoff voltage under load.
• Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC build a new discharge curve against the replacement cell before high-current charging pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the replacement cell

This happens because the fuel gauge IC is still using the old cell's discharge curve. The replacement cell hits a voltage cliff under modem or display load before the OS registers low battery. The phone cuts out not from low capacity but from a voltage drop the old calibration didn't predict. Run one complete discharge cycle — drain to auto-shutdown, then charge uninterrupted to 100% — and the coulomb counter resets to the new cell's actual curve.

OS reporting wrong battery percentage after cell swap

The percentage displayed comes from the fuel gauge IC, which was calibrated against the original cell's impedance and voltage profile. A new cell with different internal resistance shifts that curve, so the IC reports stale data — often inflated near full charge and dropping fast below 50%. One full discharge-charge cycle without interruption forces the IC to recalculate its reference points. After that cycle, percentage readings stabilise and track correctly down to 3.4V per cell.