Prestigio MultiPhone 5300 Duo Replacement Battery 3.7V 1900mAh

Prestigio MultiPhone 5300 Duo — 3.7V Li-ion Replacement Battery (PAP5300 DUO)

This is a 3.7V Li-ion cell rated at 1900mAh (7.03Wh), built to fit the Prestigio MultiPhone 5300 Duo dual-SIM smartphone. It replaces the original PAP5300 DUO battery when the existing cell degrades or fails to hold a charge. Physical dimensions are 74.80 × 62.40 × 3.60mm — measure your original before fitting.

• MultiPhone 5300 Duo fit: The 5300 Duo runs two active SIM radio stacks simultaneously, which puts higher average current draw on the cell than a single-SIM device. This replacement matches the original connector pinout and voltage rail so both SIM slots remain operational after the swap.
• Bench tested on actual hardware: We cycled this cell through a full discharge-charge sequence on a MultiPhone 5300 Duo unit. The BMS accepted charge at the expected rate and held voltage above 3.6V through mid-discharge without tripping a protection cutoff.
• Dual-SIM radio load management: After installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC needs to map the new cell's discharge curve before high-current charging is applied — skipping this step can cause the percentage readout to drift by 10–15% within the first week.

Sudden shutdown at 20–30% on the MultiPhone 5300 Duo

The 5300 Duo runs two radio modems in parallel. During peak demand — an incoming call on SIM 2 while SIM 1 is on data — current draw spikes sharply. An aged or newly installed cell with an uncalibrated fuel gauge IC can report 25% remaining while actual cell voltage has already dropped below the 3.4V cutoff threshold. The BMS then shuts down the device to protect the cell, even though the screen showed charge remaining. Run one full discharge to auto-off followed by an uninterrupted charge to 100% to let the coulomb counter recalibrate against the new cell.

Phone not powering on after the replacement battery sat in storage

Li-ion cells self-discharge during storage. If this battery sat below 2.5V per cell before installation, the BMS locks out charge acceptance entirely to prevent damage — the phone shows nothing when connected to a charger. Connect the phone to a wall adapter, not a PC USB port, and leave it for 20–30 minutes without pressing the power button. The charge IC will trickle current into the cell until voltage climbs above the BMS re-enable threshold, typically around 2.9V, at which point normal charging resumes.