A True Double Conversion UPS (Uninterruptible Power Supply) is a type of UPS that provides the highest level of power protection and reliability. This design is also known as an online or double conversion topology. In a True Double Conversion UPS, incoming AC power is first converted to DC power. The DC power is then used to charge the UPS battery and is also inverted back to AC power. This continuous double conversion ensures that the critical load is always powered by a stable and clean AC output, regardless of the quality of the incoming utility power.