Pantech Renue PBR-46E Replacement Battery 3.7V 800mAh

Pantech Renue P6030 — 3.7V Li-ion Replacement Battery (PBR-46E)

This is a 3.7V, 800mAh Li-ion cell replacing OEM part PBR-46E in the Pantech Renue (P6030). It fits the compact battery bay on this handset and restores power to calling, messaging, and basic data functions. Capacity figures come from the product specification — 800mAh, 2.96Wh.

• Renue P6030 platform fit: The P6030 uses a single Li-ion cell at 3.7V nominal with a fixed connector pinout tied to the BMS on the main board. This replacement matches that voltage rail and connector geometry so the handset's charge IC recognises the cell without a firmware conflict.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the P6030 platform and confirmed the BMS accepted the cell, terminated charge correctly at full voltage, and held the protection threshold at the low end without tripping into lockout under normal load.
• Fuel gauge recalibration on first cycle: After fitting a new cell, run one complete discharge down to auto-shutoff, then charge uninterrupted to 100% before normal use. This gives the fuel gauge IC a full reference curve against the new cell so percentage readings stay accurate from the start.

Why the Renue P6030 reports wrong battery percentage after a cell swap

The P6030 uses a fuel gauge IC that builds its charge model from the discharge curve of the cell it was last calibrated against. Swap in a new cell and the IC is still reading from its old curve — so the percentage shown on screen does not match what the new cell is actually delivering. This mismatch usually shows up as sudden jumps in the indicator or a reading that reads 30% and then drops to shutdown immediately. One full discharge-to-shutoff followed by a complete charge resets the coulomb counter and re-anchors the gauge to the new cell's actual capacity.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops sharply under the load spike from the modem or display backlight — a voltage cliff the original aged cell masked because it had settled into a softer discharge curve. A new cell has lower internal impedance and a steeper cutoff near 3.0V per cell, so the BMS trips protection before the OS percentage reading catches up. The fix is the same calibration cycle: one full discharge to auto-shutoff, then a full uninterrupted charge. After that cycle the gauge tracks the new cell's actual voltage curve and the premature shutdowns stop.