Dopod LIBR160 Replacement Battery 3.7V 2250mAh Li-ion

Dopod C730W / C730 — 3.7V Li-ion Replacement Battery (LIBR160)

This is a 3.7V, 2250mAh Li-ion cell for the Dopod C730W and C730 smartphones. Both devices share the same battery bay dimensions and connector pinout, so one SKU covers both models. Capacity is rated at 8.33Wh — matching the original LIBR160 specification.

• C730W and C730 compatibility: Both the C730W and C730 use the same battery cavity (54.13 × 40.57 × 10.84mm), the same three-pin connector, and the same BMS handshake protocol. Swapping between models requires no adapter or wiring change.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a C730W unit. The BMS accepted the cell without triggering a fault flag, held voltage above 3.6V through mid-discharge, and reported a clean charge termination at 4.2V.
• Fuel gauge recalibration after install: The C730 series uses a basic coulomb counter that calibrates against the cell's discharge curve. On first use, run the battery from 100% down to automatic shutdown without interruption — this gives the fuel gauge IC one full reference cycle against the new cell before you rely on the percentage readout.

Sudden shutdown at 20–30% on the C730W

The C730W's fuel gauge IC was calibrated to the original cell's discharge curve, not the replacement cell's. When the new cell reaches its actual voltage cliff — typically around 3.5V — the phone cuts power before the gauge reads zero. The gauge still thinks 20–30% of capacity remains because its internal map doesn't match the new cell yet. One full uninterrupted discharge-to-shutdown cycle followed by a full charge to 4.2V resets the reference and stops the early cutoff.

Phone warm near the battery compartment on first charge

A freshly installed cell starts with higher internal impedance than a broken-in one. The C730's charge IC pushes current into that higher-impedance cell, generating more heat than you'd see on a worn original battery. This is normal for the first one or two charge cycles and diminishes as the cell's impedance drops. If the compartment stays hot after three full cycles, check that the battery is seated flat — a slightly raised cell increases contact resistance at the connector pins.