About this replacement
Barnes & Noble Nook 10.1 (BNTV650) — 3.8V Li-Polymer Replacement Battery (GSP30134138)
This is a 3.8V, 6300mAh lithium-polymer replacement battery for the Barnes & Noble Nook 10.1 tablet (model BNTV650). It replaces OEM part GSP30134138 and fits the original battery bay without modification. Dimensions are 130.10 × 107.40 × 3.30mm — verify your original cell matches before installation.
- Nook 10.1 and BNTV650 compatibility: Both model names refer to the same hardware revision. The BNTV650 shares an identical connector pinout, voltage rail, and BMS handshake requirement, so one cell covers both listings without any adapter or wiring change.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a BNTV650 unit. The BMS accepted the handshake on first connection, the charge IC ramped normally to 4.2V, and no protection trips were recorded under display-plus-WiFi load.
- Post-installation calibration on the Nook 10.1: After fitting the new cell, run one full discharge to automatic shutoff, then charge uninterrupted to 100% without interrupting the session. This resets the fuel gauge IC calibration against the new cell — skipping it causes the percentage readout to drift or report inaccurately from day one.
Why the Nook 10.1 shuts down between 15–25% after a battery swap
The fuel gauge IC on the BNTV650 maps voltage curves from the old, degraded cell. When a fresh cell is installed, the IC's internal charge map no longer matches the new cell's actual voltage profile. Under combined display-plus-WiFi load, the voltage drop looks steeper than the IC expects, so it triggers an emergency cutoff well before the cell is actually depleted. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% rewrites the calibration data and clears the premature cutoff.
Fast charging not available on the Nook 10.1 after replacement
The BNTV650 charge IC uses a handshake with the charger during the first accepted charge cycle to confirm cell parameters before enabling higher current draw. If the device is powered on, restarted, or disconnected during that first charge, the negotiation resets and fast charge stays locked. Connect the tablet to its original charger, leave it powered off, and allow the full charge cycle to complete without interruption — fast charge should be available from the next session onward.