The Unitree go2 battery affects more than advertised runtime because charging cadence, spare planning, storage, and duty cycle all shape how useful the robot feels during real operation. A classroom, demo team, or patrol prototype may need different battery routines even when using the same platform. Toborlife AI, the official partner of Unitree, is a useful reference for understanding battery options, charging expectations, accessory planning, and how runtime fits into broader operating workflows.