1. High Solar Panel Voltage (PV)
Popular DC to DC /& Solar Combo controller's (Redarc, Enerdrive and Intervolt) suffer from limited Panel Voltage because they mix solar with vehicle charging. Professional Solar controllers from Victron or Morningstar operate at 98% efficiency and accept high panel voltage up to 450V. Safiery strives for a Panel Voltage approach 100V to a max of 150V
1) Early Start, late finish. Because of the higher PV, solar yield is higher early in morning when panels are cool. Likewise in late afternoon when you want that final topup.
2) The cable from the solar panels has 1/4 or less of the curent compared to low voltage solar panels. Lower current means less losses. Alternative run a longer cable with portable solar.