Protects the sealed lead-acid batteries and prolongs battery life.

Light to signal a model’s operational status. Indicators vary by product line and model.

Covers defects in materials and workmanship in the product under normal use and conditions. See warranty for details.

Exists when a line interactive UPS has an autotransformer that regulates low voltages (e.g., brownouts) and over voltages (e.g., spikes) without having to switch to battery.

The amount of power consumed by an electrical device on a circuit. Load capacity is a critical factor in selecting a UPS or surge protector.