Panasonic VIERA UN-10N10D Replacement Battery 7.4V 3000mAh

Panasonic VIERA UN-10N10D Series — 7.4V Li-ion Replacement Battery (N4HULQA00059)

This 7.4V 3000mAh Li-ion battery replaces the original cell in the Panasonic VIERA UN-10N10D, UN-15N10D, and UN-15TD10D tablets. It matches the OEM voltage, capacity, and connector spec for a direct swap. Capacity is 3000mAh (22.2Wh) as confirmed by product data.

• VIERA UN-10N10D, UN-15N10D, UN-15TD10D fit: These three VIERA tablet models share the same 7.4V battery rail, connector pinout, and BMS communication protocol — which is why both OEM part numbers N4HULQA00059 and N4HULQA00061 cross-reference across the range.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on the VIERA platform. The BMS accepted the cell without fault codes, charge termination triggered correctly at full capacity, and low-voltage cutoff fired at the expected threshold under combined display and Wi-Fi load.
• Fuel gauge reset after installation: 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 clears the inaccurate percentage readings that appear immediately after a swap.

VIERA tablet shutting down at 15–25% remaining after battery swap

This happens because the fuel gauge IC was calibrated to the wear curve of the old cell. When a new cell is fitted, the IC misreads the state of charge and triggers a protective shutdown well before the battery is actually empty. The combined load of the display backlight and active Wi-Fi accelerates the voltage drop at that threshold, making the cutoff appear earlier than expected. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% realigns the IC to the new cell's actual voltage curve.

Fast charging not available after battery replacement on the VIERA UN-series

The VIERA tablet's charge controller uses a negotiation handshake with the battery's BMS before enabling the higher charge rate. On the first cycle with a new cell, the controller defaults to standard charge current until it has completed one accepted charge session and logged the cell's response data. This is normal behaviour — not a fault with the battery or charger. After the first full charge cycle completes, the fast charge option becomes available through the device's normal charging protocol.