Wacom Intuos5 Touch Replacement Battery 3.7V 1200mAh

Wacom Intuos5 Touch Series — 3.7V Li-ion Replacement Battery (1UF553450Z-WCM)

This 3.7V, 1200mAh Li-ion battery replaces the original cell inside the Wacom Intuos5 Touch wireless pen stylus. It fits the PTH-450 series tablets, including PTH-450-XX, PTH-450-DE, and PTH-450-EN variants. Capacity is 4.44Wh — matching the OEM spec for the wireless module.

• PTH-450 wireless pen module: All PTH-450 variants share the same wireless pen housing and battery bay. The connector pinout, physical dimensions (54.92 × 33.94 × 6.00mm), and BMS communication protocol are identical across the range — so one cell covers the full lineup.
• Bench tested on actual hardware: We cycled this cell through the Intuos5 wireless pen under active pressure-input testing. The BMS accepted charge from the tablet's pen dock without flagging a cell mismatch, and pressure sensitivity registered correctly across all 2048 levels throughout the discharge curve.
• Pen dock charging behaviour: The Intuos5 pen charges through a dedicated dock port, not USB. Leaving the pen docked between sessions is the correct usage pattern — the charge IC cuts off at full capacity and does not trickle-overcharge.

Why the Intuos5 wireless pen loses pairing after a battery swap

The PTH-450 pen stores its pairing state in a small capacitor-backed memory that drains completely when the cell is removed. Once the new battery is fitted and the pen is re-inserted into the dock, the tablet will not recognise it until a fresh pairing sequence runs. Open Wacom Tablet Properties, remove the pen from the device list, then re-dock the pen for 30 seconds to trigger re-registration. This is a one-time step after any battery replacement — not a fault with the cell.

Pressure levels reading as flat or unresponsive after fitting the new cell

If the pen registers movement but pressure levels stay at zero or maximum, the BMS has not completed its first handshake with the pen's internal controller. This happens when the cell voltage at delivery is below the pen's minimum boot threshold — typically under 3.4V. Place the pen in the dock and charge uninterrupted until the indicator light changes state, then test pressure input again. A full charge to 4.2V resolves the handshake and restores the full pressure curve.