Samsung GT-E2370 Replacement Battery AB113450BU 3.7V 2000mAh

Samsung GT-E2370 / Xcover E2370 — 3.7V Li-ion Replacement Battery (AB113450BU)

This is a 3.7V, 2000mAh Li-ion replacement battery for the Samsung GT-E2370, E2370 Solid, and Xcover E2370. It replaces OEM part AB113450BU. The cell fits the standard battery bay on all three variants and connects to the phone's charge IC and fuel gauge circuit directly.

• GT-E2370, E2370 Solid, and Xcover E2370 compatibility: All three models share the same 3.7V single-cell architecture, battery bay dimensions (53.14 × 33.80 × 10.80mm), and AB113450BU connector pinout. The BMS handshake is identical across the range, so one cell covers all three.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a GT-E2370 unit. The BMS accepted the cell without fault codes, the charge IC completed a full CC/CV charge cycle, and the fuel gauge IC registered correct end-of-charge voltage at 4.2V.
• Fuel gauge recalibration on first install: On first use, disable any power-saving fast-charge mode and let the phone run one complete discharge-to-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before it begins reporting state-of-charge to the OS.

Why the GT-E2370 reports wrong battery percentage after a cell swap

The GT-E2370 uses a fuel gauge IC that tracks capacity against a stored discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual cell chemistry and internal resistance. The IC keeps reading state-of-charge against the old reference, so the percentage on screen can read 40% when the cell is closer to empty — or vice versa. One complete discharge from 100% down to automatic shutdown, followed by a full charge to 100%, forces the IC to reset its coulomb counter against the new cell's actual curve.

Sudden shutdown at 20–30% charge remaining on the replacement cell

This happens when the fuel gauge IC is still calibrated to an old, degraded cell with a steep voltage cliff. The new cell's voltage under load drops sharply in the lower state-of-charge window, crossing the BMS undervoltage cutoff threshold before the displayed percentage reaches zero. The phone interprets this voltage drop as a hard low-battery event and shuts down. Run two full discharge-charge cycles without interruption — by the second cycle, the fuel gauge IC recalibrates its cutoff reference to the new cell's actual voltage floor, and the shutdowns stop.