EB-BN920ABE Samsung Galaxy Note 5 Replacement Battery 3.8V 3000mAh

Samsung Galaxy Note 5 — 3.8V Li-Polymer Replacement Battery (EB-BN920ABE)

This 3.8V, 3000mAh lithium-polymer cell replaces the original EB-BN920ABE battery in the Samsung Galaxy Note 5. It fits SM-N920A, SM-N920R4, SM-N920F, and 19 additional SM-N920 variants. Swap it when the original cell can no longer hold charge through a normal day of use.

• SM-N920 series compatibility: All SM-N920 variants share the same 3.8V battery bay, connector pinout, and BMS handshake protocol. One cell covers the full range without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Note 5 unit. The BMS accepted the cell on first connection, charge termination triggered correctly at 4.35V, and low-voltage cutoff activated at the expected threshold without false trips.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This gives the fuel gauge IC accurate data on the new cell's discharge curve before high-current fast charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff issue, not a capacity defect. The fuel gauge IC still holds calibration data from the old, degraded cell. Under high-current load — LTE modem, screen at full brightness, or GPS — the new cell's voltage drops faster than the IC predicts, triggering a protective shutdown before the percentage reaches zero. One full discharge-charge cycle at standard rate resets the coulomb counter against the new cell's actual discharge curve. After that cycle, shutdowns at 20–30% stop.

USB fast charge not accepted after battery replacement

Samsung's Adaptive Fast Charging handshake on the Note 5 requires the BMS to respond correctly on the first charge cycle. A new cell sometimes presents higher impedance than the charge IC expects, causing it to fall back to standard 5V charging rather than negotiating the higher voltage rail. Plug in using the original Samsung charger and cable — third-party USB-PD chargers often fail the handshake on the first cycle with a new cell. After one standard charge completes, fast charging typically activates normally on subsequent cycles.