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BlackView Tab 12 Pro — 3.8V Li-Polymer Replacement Battery (3092E0) This is a 3.8V, 6500mAh (24.7Wh) lithium-polymer battery for the BlackView Tab 12 Pro tablet. It replaces OEM part number 3092E0. Fit this battery when the original cell no longer holds charge or the tablet shuts down unexpectedly during use. Tab 12 Pro fit: The Tab 12 Pro uses a single-cell Li-Polymer pack at 3.8V nominal. The 3092E0 part number maps to one connector configuration and one cell format — there are no sub-variants to account for on this model. Bench tested on actual hardware: We cycled this battery through charge and discharge on the Tab 12 Pro platform. The BMS accepted the cell without fault flags, and the charge IC ramped to full current within the first accepted cycle. Fuel gauge recalibration after install: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell and corrects the inaccurate percentage readings that commonly appear after a swap. Tab 12 Pro shutting down at 15–25% remaining This happens when the display backlight and Wi-Fi radio fire simultaneously, pulling combined current the fuel gauge hasn't mapped yet. Voltage drops faster than the IC predicts, and the tablet treats it as a low-voltage cutoff. It is not a faulty battery. Run one complete discharge-to-shutoff cycle followed by an uninterrupted full charge. After that single cycle, the IC recalibrates and the shutdowns stop. Fast charging not available after battery swap Fast charge on the Tab 12 Pro requires the charge IC to complete one full USB-PD negotiation cycle with the new cell present. Until that cycle finishes, the charger defaults to standard current. This is not a defect with the replacement cell. Charge the tablet fully from near-zero once using the original BlackView adapter, and fast charge availability returns on the following session.