EB615268VU AT&T Galaxy Note Replacement Battery 3.7V 2000mAh

AT&T SGH-i717 Galaxy Note — 3.7V Li-ion Replacement Battery (EB615268VU)

This is a 3.7V, 2000mAh Li-ion cell built to replace the original EB615268VU battery in the AT&T Samsung Galaxy Note SGH-i717. It fits the Galaxy Note, Galaxy Note LTE, and Galaxy Note 4G variants on the same platform. Capacity figure is taken directly from the product specification — not estimated from a third-party source.

• SGH-i717 platform coverage: The SGH-i717, Galaxy Note LTE, and Galaxy Note 4G all run the same voltage rail and use the same physical cell bay with identical connector orientation, so one cell fits across all four listed models without modification.
• Bench tested on actual hardware: We cycled this cell through the SGH-i717's charge IC and confirmed the BMS handshake completes correctly — the phone accepted the cell, initiated charge, and the fuel gauge IC began tracking state-of-charge without fault codes.
• Fuel gauge recalibration after install: On first use, disable Samsung's adaptive fast charge in Settings before starting the initial cycle. Let the battery drain fully to automatic shutdown, then charge uninterrupted to 100%. This gives the fuel gauge IC one clean discharge curve to calibrate against before high-current charging sessions begin.

Why the SGH-i717 reports wrong battery percentage after a cell swap

The Galaxy Note uses a coulomb counter in the fuel gauge IC that was calibrated against the original cell's discharge curve over hundreds of cycles. When a new cell goes in, the stored curve no longer matches the actual voltage-to-capacity relationship of the replacement cell. The phone reads voltage, maps it to the old curve, and reports a percentage that can be off by 10–20%. One full discharge-to-shutdown followed by an uninterrupted charge to 100% forces the IC to write a new reference curve and clears the mismatch.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem fires a high-draw transmission burst or the display backlight peaks while the cell voltage is already sitting in a marginal zone around 3.5–3.6V. The cell cannot sustain voltage under that combined load and drops below the BMS cutoff threshold instantly — the phone shuts off even though the gauge still showed charge remaining. It is not a faulty cell. The fuel gauge IC had not yet built an accurate curve for the new cell's voltage cliff, so it misjudged how much headroom was left. Run one complete calibration cycle first and the shutdowns will stop once the IC maps the actual cutoff voltage correctly.