Navon MD455 Replacement Battery 3.7V 1460mAh Li-ion

Navon MD455 — 3.7V Li-ion Replacement Battery (G13001)

This is a 3.7V, 1460mAh Li-ion cell built to replace the factory battery in the Navon MD455 smartphone. It restores power to the processor, display, and cellular radio when the original cell can no longer hold a usable charge. Capacity figure is 1460mAh — match this against the label on your current battery before fitting.

• MD455 fitment: The G13001 cell is the single battery variant for this model. The connector orientation and PCM tab placement match the MD455 bay directly — no adapter or modification needed. Verify dimensions (69.00 × 49.80 × 4.50mm) against your current cell before ordering.
• Bench tested on actual hardware: We cycled this cell through charge and load on the bench. The BMS held charge termination correctly and the protection circuit tripped as expected under short-circuit simulation. No thermal anomalies were recorded during the standard charge cycle.
• Fuel gauge recalibration on first use: On first use after fitting, disable fast charging if your charger supports it, then run one complete discharge down to auto-shutoff and charge fully without interruption. This lets the fuel gauge IC map its reference curve against the new cell before normal use resumes.

Sudden shutdown at 20–30% on the MD455 after a cell swap

This happens because the fuel gauge IC is still reading from the old cell's discharge curve stored in memory. The new cell may have a slightly different voltage-versus-capacity slope, so the IC misjudges how much charge remains. When the modem fires a high-current burst during a call or data transfer, the cell voltage drops sharply past the BMS cutoff threshold — even though the reported percentage looks safe. One full discharge-to-shutdown and uninterrupted recharge cycle forces the coulomb counter to resync. After that cycle, check that the phone reads 4.15–4.20V at full charge using a battery diagnostics app.

MD455 showing wrong battery percentage after replacement

The fuel gauge IC on the MD455 calibrates its percentage readout against a stored discharge curve from the original cell. A replacement cell with a slightly different internal impedance will cause the IC to report inaccurate figures — often reading 100% immediately on plug-in or jumping several percent during light use. This is not a fault in the new cell. Drain the battery fully until the phone shuts itself off, then charge to 100% in one unbroken session. Most users see stable percentage reporting within two full cycles.