Overvoltage occurs when the DC input to your inverter exceeds its designed voltage limit, which can damage internal components, trip safety protections, or even shorten the device's lifespan. Understanding the common causes is the first step toward prevention. An inverter is a device that converts DC (direct current) power—like the electricity stored in a battery—into AC (alternating current) power, which is the type of electricity that powers most homes and appliances. Common Uses of Inverters: Without inverters, solar panels and batteries wouldn't be. At its core, inverter DC overvoltage happens when the DC voltage feeding the inverter—or building up on the DC bus—exceeds the inverter's safe operating limit. Every inverter has a maximum DC voltage rating. When that threshold is crossed, the inverter protects itself by shutting down or triggering. Overload occurs when the total power of connected loads exceeds the inverter's rated output power (long-term limit) or peak power capacity (short-term surge limit).