Ups powercom inf-500 500va/300w,12vdc,10a max charge curr., external battery only, 2*schuko sockets --- https //www.upspowercom.com/ups-inf.jsp model powercom infinity inf-1100ap form tower capacity(va) 500 va capacity(watts) 300 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) 5.8 battery (recommended form) voltage 12 vdc battery capacity 65 ah - 200 ah maximum charge current 10 a discharge protection auto diagnostics, over - discharge, shot circuit, fuse