Among the quadruped robots in our catalog, the Unitree B2 has the longest battery runtime — 6 hours — and it also carries the highest rated payload at 120 kg. unitree.comunitree.com ↗“robot.payload_kg=120 kg, robot.battery_runtime_h=6 h”
A few supporting details on the B2: it's an industrial-grade IP67 quadruped with a 2250 Wh battery, a max speed of 6 m/s, and an optional configuration that adds an Intel Core i7 plus up to three NVIDIA Jetson Orin NX computers. unitree.comunitree.com ↗“Industrial-grade IP67 quadruped robot; optional configuration adds Intel Core i7 and up to three NVIDIA Jetson Orin NX computers”
For comparison, the next-longest runtimes among quadrupeds are the Unitree Go2 EDU (4 h, 12 kg payload), the Ghost Robotics Vision 60 (3.15 h, 10 kg payload), and the PUDU D5-W (3 h, 30 kg payload). unitree.com +2unitree.com ↗“robot.battery_runtime_h=4 h, robot.payload_kg=12 kg”ghostrobotics.io ↗“robot.battery_runtime_h=3.15 h, robot.payload_kg=10 kg”pudurobotics.com ↗“robot.battery_runtime_h=3 h, robot.payload_kg=30 kg”