Outback appointed Distributors and Service Centre. The OUTBACK FX & VX Series true sinewave inverter/charger is a complete power solution. It incorporates a DC to AC true sinewave inverter, battery charger and AC transfer switch all housed within a die-cast aluminum chassis. The Outback FM60 & FM80 MPPT Controllers are well known for their reliability The FLEXmax family of charge controllers is the latest innovation in Maximum Power Point Tracking (MPPT) charge controllers from OutBack Power Systems. The innovative FLEXmax MPPT software algorithm is both continuous and active, increasing your photovoltaic array power yield up to 30% compared to non-MPPT controllers.