Orange SPV F600 STAR160 Replacement Battery 3.7V 850mAh

Orange SPV F600 — 3.7V Li-ion Replacement Battery (STAR160)

This is a 3.7V 850mAh Li-ion replacement battery for the Orange SPV F600 Windows Mobile smartphone. It fits the original STAR160 battery slot and restores power to devices where the original cell has degraded or failed completely. Voltage and form factor match the OEM specification — dimensions are 44.97 × 37.16 × 5.44mm.

• SPV F600 fit confirmation: The F600 uses a dedicated battery bay with a three-contact interface. This cell matches that contact layout and the 3.7V nominal rail the device's power management IC expects. No modification needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the F600 platform. The BMS accepted charge from the device's internal charge controller without error flags, and the protection circuit tripped correctly at low-voltage cutoff.
• Fuel gauge recalibration after install: The SPV F600's fuel gauge IC holds a charge curve based on the old cell. After fitting this battery, run one complete discharge to automatic shutdown, then charge uninterrupted to 100%. This gives the IC a fresh reference point against the new cell's actual discharge profile.

Why the SPV F600 reports wrong battery percentage after a cell swap

The F600 uses a fuel gauge IC that tracks capacity by coulomb counting against a stored discharge curve learned from the original cell. When a new cell goes in, the stored curve no longer matches the actual cell behaviour, so the reported percentage drifts. The gauge may show 30% and cut out, or read 100% while still on a partial charge. One full discharge-to-shutdown followed by an uninterrupted charge cycle forces the IC to rewrite its reference curve against the new cell. After that cycle, percentage readings stabilise.

Sudden shutdown at 15–25% on the replacement cell

This happens when the cell voltage drops sharply under load — typically when the modem transmits or the screen backlight peaks — faster than the fuel gauge predicted. The F600's power management IC shuts the device down before the reported percentage reaches zero. The root cause is a voltage cliff: at low state of charge, even a brief current spike pulls cell voltage below the protection threshold. To confirm this is the cause and not a fault, charge the device to 100% and check whether the shutdowns still occur below 20%. If they stop after a full recalibration cycle, the fuel gauge was the issue, not the cell.