The REAL-EL RESERVE-500 line-interactive UPS of continuous action with long backup time for external batteries is designed to operate with lead-acid maintenance-free 12 V batteries of AGM type. Principle of their operation is based on the transformation of direct current of external batteries to alternating current. Current waveform at the output is the regular sinusoidal wave.

The REAL-EL RESERVE-1000 line-interactive UPS of continuous action with long backup time for external batteries is designed to operate with lead-acid maintenance-free 12 V batteries of AGM type. Principle of their operation is based on the transformation of direct current of external batteries to alternating current. Current waveform at the output is the regular sinusoidal wave.