Saiet SCUDOTRE Replacement Battery 3.7V 900mAh Li-ion

Saiet SCUDOTRE — 3.7V Li-ion Replacement Battery

This 3.7V, 900mAh Li-ion cell replaces the original battery in the Saiet SCUDOTRE smartphone. It restores power to a device with a degraded or dead original cell. Dimensions are 46.47 x 39.79 x 5.33mm — confirm these against your existing battery before installing.

• SCUDOTRE fit: The SCUDOTRE runs a 3.7V single-cell architecture. This replacement matches that voltage rail and physical footprint. The BMS on the replacement cell communicates with the charge IC on the same handshake protocol the SCUDOTRE expects.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The BMS engaged correctly at both the high-voltage cutoff and the low-voltage floor. No unexpected cutoffs occurred during the test sequence.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins. Skipping this step can cause the OS to report inaccurate percentages for days.

Sudden shutdown at 20–30% on the replacement cell

This happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell hits a voltage cliff under screen or modem load that the IC did not predict. The phone interprets a rapid voltage drop as a fault and shuts down to protect the system. Run one full discharge to below 5% without fast charging — the coulomb counter resets and the shutdowns typically stop.

Device not powering on after the battery sat in storage

A Li-ion cell stored at low charge self-discharges over time. If the cell drops below approximately 2.5V, the BMS locks out to prevent damage to the cells. The phone will not respond to a normal charger because the BMS blocks current until the cell voltage recovers. Use a charger that supports trickle or recovery mode, or leave the phone on charge for 30–60 minutes before attempting to power on — the BMS typically re-initialises once the cell reaches around 3.0V.