[Performance & Parameters] What is Voltage Sag? Why does it affect robots and power systems?

In this context, Voltage Sag refers to the phenomenon where the terminal voltage of a battery drops significantly during instantaneous high-current output. This is particularly critical for robots, power platforms, and mobile devices, as their motors and control systems are highly sensitive to voltage stability.

During actual operation, when a robot starts, climbs, accelerates, or overcomes obstacles, its current demand can surge dramatically in an extremely short time. If the battery has high internal resistance or an unstable material system, the voltage will drop accordingly. This directly leads to insufficient motor torque output, and may even trigger system protection mechanisms or cause operational failures.

The issue of Voltage Sag is not limited to instantaneous performance degradation; it also accelerates system aging during long-term operation. Frequent voltage fluctuations increase the burden on the control system, compromise scheduling precision, and exacerbate performance inconsistencies caused by battery degradation.

LYP batteries prioritize voltage stability as a core design metric. Through a low internal resistance system and stable electrochemical behavior, voltage variations are kept within a controllable range even under high-rate discharge conditions. For robots and power systems operating at high frequencies and in complex environments, this characteristic is often more important than capacity alone.