Wacom Cintiq Companion 2 Compatible Battery 7.4V 8000mAh

Wacom Cintiq Companion 2 DTH-W1300 — 7.4V Li-Polymer Replacement Battery (G6BTA007H)

This is a 7.4V, 8000mAh (59.2Wh) lithium-polymer replacement battery for the Wacom Cintiq Companion 2 (DTH-W1300). It replaces OEM part number G6BTA007H. The Cintiq Companion 2 is a portable pen display tablet built for digital artists who work away from a desk.

• DTH-W1300 platform fit: The Cintiq Companion 2 uses a flat Li-Polymer cell with a specific connector orientation and BMS handshake tied to the DTH-W1300 board. This replacement matches the OEM footprint — 182 x 146 x 7.20mm — and communicates with the charge IC at the same voltage thresholds as the original G6BTA007H cell.
• Bench tested on actual hardware: We ran this battery through charge and discharge cycles on the DTH-W1300. The BMS passed charge acceptance correctly, cell balancing engaged at expected voltage, and the OS reported charge state without error after a calibration cycle.
• Fuel gauge recalibration after install: After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without using the device. This gives the fuel gauge IC a clean reference point against the new cell and removes the percentage drift that appears after any cell swap.

Cintiq Companion 2 shutting down at 15–25% remaining

The DTH-W1300 runs a high-resolution display and active digitiser simultaneously. Under combined display, Wi-Fi, and pen input load, current draw spikes fast enough to collapse a degraded or uncalibrated cell voltage below the BMS cutoff threshold before the percentage gauge catches up. This makes the tablet shut off well above what looks like a safe charge level. Fitting a fresh cell solves the voltage sag, but you still need one full discharge-to-shutoff cycle to anchor the fuel gauge. After calibration, the OS percentage and actual cutoff point align correctly.

Battery percentage jumping or reading incorrectly after a swap

The Cintiq Companion 2 fuel gauge IC stores calibration data tied to the original cell's charge curve. When you install a new cell, the IC is still referencing the old curve, so reported percentage drifts — it may jump from 40% to 80%, or drop suddenly under light load. This is not a fault in the replacement battery. Run one full cycle: discharge to automatic shutoff, then charge to 100% without interruption. The fuel gauge IC resets its reference points against the new cell, and percentage reporting stabilises from that point forward.