Samsung Galaxy J7 2016 EB-BJ710CBN Replacement Battery 3.85V

Samsung Galaxy J7 2016 — 3.85V Li-ion Replacement Battery (EB-BJ710CBN)

This 3.85V, 3300mAh Li-ion cell replaces the original battery in the Samsung Galaxy J7 2016 series, covering SM-J7109, SM-J7108, Galaxy J7 6 Duos TD-LTE, and related variants. It ships as a direct swap for OEM part numbers EB-BJ710CBN, EB-BJ710CBE, EB-BJ710CBC, EB-BJ710CBA, and GH43-04599A. Cell dimensions are 100.12 × 48.56 × 4.90mm — matching the original battery bay exactly.

• J7 2016 variant coverage: The SM-J7108 and SM-J7109 share the same connector pinout, voltage rail, and BMS handshake protocol as the Galaxy J7 6 Duos TD-LTE variants. All confirmed models use the EB-BJ710 cell family, so one replacement covers the entire 2016 J7 lineup without modification.
• Bench tested on actual hardware: We ran this cell in an SM-J7109 chassis. The BMS accepted the new cell on first connection, charge IC handshake completed without error flags, and the protection circuit tripped correctly at the rated low-voltage cutoff threshold.
• Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins on an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the J7 2016 after a cell swap

The J7 2016's fuel gauge IC stores a discharge curve from the previous cell. When a new cell arrives with different internal resistance, the IC's voltage-to-percentage map becomes inaccurate. Under modem or display load, the new cell's voltage drops faster than the old curve predicts, causing the system to hit the emergency cutoff before the displayed percentage reaches zero. One complete discharge cycle — letting the phone shut down from actual cell depletion, then charging to 100% at standard rate — forces the IC to rebuild its curve against the new cell. After that cycle, the reported percentage tracks correctly under load.

Phone feels warm near the battery bay during the first few charges

A fresh Li-ion cell has higher internal impedance than a cell that has been cycled. The J7 2016's charge IC pushes current into this higher-impedance cell, and the extra resistance converts some of that energy to heat. This is normal for the first two to three cycles and reduces as the cell's impedance drops with use. If warmth persists beyond the third full charge, check that the back cover is fully seated — a partially open cover traps heat against the cell rather than letting it dissipate through the chassis.