Verizon Palm TLp007A1 Compatible Battery 3.85V 700mAh

Verizon Palm PVG100 — 3.85V Li-Polymer Replacement Battery (TLp007A1)

This 3.85V, 700mAh (2.7Wh) lithium-polymer cell replaces the original TLp007A1 battery in the Verizon Palm smartphone. It fits the Palm, PVG100, PVG100E, and PVG100EU models. The cell matches the original's compact 41.70 × 33.50 × 3.70mm footprint, so it sits flush in the chassis without clearance issues.

• PVG100 platform compatibility: The Palm, PVG100, PVG100E, and PVG100EU all share the same battery bay dimensions, connector pinout, and BMS handshake protocol — a single cell covers the full range without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a PVG100 unit. The BMS accepted the charge IC handshake on the first cycle, and the protection circuit triggered correctly at the low-voltage cutoff threshold.
• Fuel gauge recalibration on first use: After installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.

Sudden shutdown at 20–30% on the Palm PVG100

The Palm's small 700mAh cell has a steep voltage cliff near the bottom of its discharge curve. When the modem transmits or the screen peaks, current draw spikes and cell voltage drops sharply — the BMS reads this as a low-voltage fault and cuts power before the percentage gauge catches up. This is a calibration gap between the fuel gauge IC and the new cell, not a defective battery. One full uninterrupted discharge-to-zero then a full charge cycle at standard rate resets the coulomb counter and resolves the early shutdown.

Phone won't power on after the battery sat discharged in storage

Lithium-polymer cells that drop below roughly 2.5V enter BMS lockout — the protection circuit disconnects the cell to prevent damage, and the phone shows no response to the power button or charger. Plug into a wall adapter rather than a PC USB port, which may not supply enough current to wake the BMS. Hold the charge for at least 15–20 minutes at this trickle state before attempting to power on. If cell voltage recovers above 3.0V, the BMS will re-initialise and normal charging resumes.