Orange SPV M3000 WIZA16 Replacement Battery 3.7V 2350mAh

Orange SPV M3000 — 3.7V Li-ion Replacement Battery (WIZA16)

This is a 3.7V, 2350mAh Li-ion replacement battery for the Orange SPV M3000 smartphone. It replaces OEM part WIZA16. The cell restores power to the processor, display, and radio stack when the original battery has degraded or failed.

• SPV M3000 fit: The M3000 uses a single-cell 3.7V Li-ion pack with a three-contact connector that carries both charge and fuel gauge data. This replacement matches that connector layout and cell voltage, so the phone's charge IC accepts it without flagging a hardware mismatch.
• Bench tested on actual hardware: We cycled this cell through the M3000's charge IC and monitored BMS handshake at insertion. The protection circuit tripped correctly at the low-voltage threshold and resumed charge acceptance after a standard recovery pulse — no anomalies.
• Fuel gauge recalibration on first use: On first use after installation, disable any fast-charge accessory and run one complete discharge-to-charge cycle. This lets the M3000's fuel gauge IC map the new cell's discharge curve before it starts reporting accurate percentages.

Why the SPV M3000 reports wrong battery percentage after a cell swap

The M3000 stores a learned discharge curve for the original cell inside its fuel gauge IC. When a new cell goes in, that curve no longer matches the actual cell chemistry, so the reported percentage drifts — sometimes by 15–25 points. The IC needs a full discharge and recharge cycle to rewrite its reference data. Until that cycle completes, readings will be unreliable. Run the phone down to automatic shutdown, then charge uninterrupted to 100% to reset the calibration.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff issue, not a capacity issue. Under peak load — modem activity, screen at full brightness, or GPS active — the cell voltage drops sharply. If it dips below the BMS cutoff threshold, the phone shuts off even though the fuel gauge still shows charge remaining. The original cell had a lower internal resistance after break-in; a fresh cell has slightly higher impedance until it completes a few cycles. Run three full discharge-charge cycles and the shutdown threshold will stabilise around 3.4V under load.