Galaxy Note GT-N7000B Replacement Battery 3.7V 2500mAh

Telstra Galaxy Note / GT-N7000B Next G — 3.7V Li-ion 2500mAh Replacement Battery

This 3.7V Li-ion cell replaces the original battery in the Samsung Galaxy Note GT-N7000B Next G, sold through Telstra. It delivers 2500mAh (9.25Wh) capacity and fits the same physical bay — 67.50 × 51.90 × 5.90mm — without modification. Buy this when the original cell no longer holds a usable charge or fails to power the handset through a normal day.

• GT-N7000B Next G fit: The Next G variant shipped with the same battery bay dimensions and 3.7V nominal voltage rail as the international GT-N7000. Both share the same three-contact connector layout and BMS communication line, so this cell slots directly into either unit.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a Galaxy Note unit. The BMS accepted the handshake on first insertion, charge termination triggered correctly at 4.2V, and the low-voltage cutoff held at 3.0V without fault.
• Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one complete discharge down to automatic shutdown, then charge fully to 100% without interruption. This gives the fuel gauge IC one clean reference curve against the new cell before the OS starts reporting accurate percentages.

Sudden shutdown at 20–30% on the Galaxy Note after a cell swap

The Galaxy Note uses a coulomb counter that was calibrated to the discharge curve of the original, often aged cell. A new 2500mAh cell has a steeper voltage cliff at the low end than a worn cell — the fuel gauge IC thinks the battery is at 20% when the actual cell voltage is already dropping fast under screen or modem load. The result is an abrupt shutdown even though the percentage readout showed charge remaining. One full uninterrupted discharge-to-shutdown followed by a full charge resets the coulomb counter reference and eliminates most of these cutoffs.

Phone warm near the battery bay during the first charge after replacement

A new, uncycled Li-ion cell has higher internal impedance than a broken-in cell. The charge IC pushes current into higher resistance during that first cycle, and the extra energy dissipates as heat in both the cell and the board. This is normal on cycle one and typically drops off by cycle three. If the handset stays warm past the first two full charges, check that no case or cover is trapping heat against the back panel — the Galaxy Note's back cover is the primary heat path out of the battery bay.