Ups powercom inf-1500 1500va/1050w,24vdc,15a max charge curr.,external battery only,2*schuko sockets --- https //www.upspowercom.com/ups-inf.jsp model powercom infinity inf-1500ap form tower capacity(va) 1500 va capacity(watts) 1050 w input form tower type voltage 100 / 110 / 120 or 220 / 230 / 240 vac voltage range 70 - 150 or 140 - 300 vac frequency range 50 / 60 hz (auto sensing) output waveform pure sine wave voltage 100 / 110 / 120 or 220 / 230 / 240 vac frequency 50 / 60 hz ± 1 hz transfer time 2 - 4 ms(typical) full protection overload, surge, short circuit management communication indicator led panel, lcd panel communication port usb b-type dimensions(wxdxh)(mm) 130 x 412 x 200 weights(kgs) 12.2 battery (recommended form) voltage 24 vdc battery capacity 100 ah - 200 ah maximum charge current 15 a discharge protection auto diagnostics, over - discharge, shot circuit, fuse