About this replacement
Samsung GT-S6810 Galaxy Y Duos — 3.7V Li-ion Replacement Battery (EB-L1P3DVU)
This 3.7V, 1300mAh Li-ion battery replaces the OEM cell in the Samsung Galaxy Y Duos (GT-S6810, GT-S6810P), Galaxy Fame, and Galaxy Ace Duos. It matches the original EB-L1P3DVU spec for voltage, physical footprint (57.50 × 43.02 × 4.83mm), and connector position. Use this when the original cell no longer holds adequate charge or the phone shuts down unexpectedly under normal load.
- GT-S6810 and GT-S6810P compatibility: Both variants share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. The BMS handshake logic is identical across both, so a single cell covers either board revision without modification.
- Bench tested on actual hardware: We cycled this cell through full discharge and charge on the GT-S6810 platform. The BMS accepted charge without flagging an incompatibility error, and the protection circuit tripped correctly at the low-voltage cutoff threshold during deep discharge testing.
- Fuel gauge recalibration on first install: After fitting a new cell, run one complete discharge down to auto-shutdown and then a full uninterrupted charge before relying on the percentage indicator. The Galaxy Y Duos fuel gauge IC carries the old cell's coulomb-count curve in memory and will misread state-of-charge until it recalibrates against the new cell.
Sudden shutdown at 20–30% on the GT-S6810 after a cell swap
The Galaxy Y Duos shuts down mid-use even though the status bar shows charge remaining because the fuel gauge IC is still using the discharge curve from the degraded original cell. When the modem, display, and processor draw current simultaneously, the new cell's actual terminal voltage dips below the hardware cutoff threshold before the IC predicts it. The phone interprets this as a catastrophic voltage drop and kills power to protect the board. Run one full cycle — discharge to shutdown, charge uninterrupted to 100% — and the coulomb counter will remap to the new cell's actual curve, pushing that premature cutoff point closer to the real 3.0V floor.
Phone feels warm near the battery during the first charge after replacement
A new cell arrives with a higher internal impedance than a broken-in cell. During the first charge cycle, the charge IC pushes current into that higher-impedance cell, and the resistance converts some of that energy to heat. This is normal and typically settles after two to three charge cycles as the cell's impedance drops. If the phone remains hot to the touch beyond the third full charge, check that the battery contacts on the board are clean and making full contact — a partial connection forces the IC to compensate with higher current, sustaining the heat.