Hikvision DS-UPS3000 3kVA UPS. Battery backup for compatible equipment within the rated capacity. Model DS-UPS3000 with 3000VA/1800W rated capacity. Includes automatic voltage regulation, LCD display, USB communication and four 12V 9Ah lead-acid batteries. PWM output waveform with transfer time up to 10ms. Backup duration depends on connected load and battery condition.