About this replacement
Samsung Galaxy J5 (2016) SM-J5108 — 3.85V Li-ion Replacement Battery (EB-BJ510CBC)
This is a 3.85V 2500mAh Li-ion replacement cell for the Samsung Galaxy J5 (2016) series, covering SM-J5108, SM-J5109, Galaxy J5 6 Duos, and Galaxy J5 6 Duos TD-LTE among others. It matches OEM part numbers EB-BJ510CBC, EB-BJ510CBE, and GH43-04601A. The cell fits directly into the battery bay with no modification to the housing or connector.
- SM-J5108 and J5109 compatibility: Both models share the same 3.85V battery rail, identical 30-pin flex connector, and the same BMS handshake protocol — that is why a single cell covers both variants and the Duos TD-LTE edition.
- Bench tested on actual hardware: We ran this cell on an SM-J5108 unit. The BMS accepted charge on the first cycle, thermal sensors reported normal, and the charge IC stepped through trickle, CC, and CV phases without interruption.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging begins on an uncalibrated counter.
Sudden shutdown at 20–30% on the SM-J5108 after a cell swap
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 modem or display load at a state-of-charge the gauge has not yet mapped. The phone reads 25% but the cell voltage has already dropped below the BMS cutoff threshold. One full discharge-to-charge cycle forces the coulomb counter to reset and recalibrate against the actual new cell curve.
Phone warm near the battery on the first few charges after replacement
A new cell has higher internal impedance than a worn one, so the charge IC dissipates more energy as heat during the initial cycles. This is normal and reduces as the cell goes through its first three to five charge cycles. If the phone stays warm beyond five full cycles, check that the charge IC is not locked in constant-current phase — this can happen if the fuel gauge reading drifts and prevents transition to CV. Confirm the cell voltage at full charge reads between 4.35V and 4.40V.