very nice of guy to offer his ups,, totally free,,lucky you griffin,!!!
let me see,,,,,,,,, 5 x 80 watt panels (12 volt with vmp of 17.5) is rated at 87.5 volts but would deliver much greater volts in sunny porto,,
so straight in to 45 forklift cells = 90 volts with dump on one side set to 56,5(48 volt) and dump on the other side 42 volts(36volts).achieved by splitting the pack in two halfs to make the dump loads managable..
then connect the ups to the lot and bobs your aunt.
forum member,,,,,,,,,would this work,