Does anyone have any experience using battery powered inverters (E.g.; 12 Vdc --> 220 Vac) to power a VFD in a loss of utility power scenario? I would like to know if there have been any issues either with the inverter or the VFD/motor or did everything function normally. I am concerned that no matter how good the inverter is, it will never produce a pure sine wave (harmonics) and this may affect the VFD or conversely, will the switching nature of the VFD cause problems for the inverter. I currently power an Automation Direct GS2-20P5 VFD (1/2 hp) from 220 Vac single phase ("split phase") going through a LR2-20P5-1PH line reactor in series with a 20DRT1WGS EMI filter. Automation Direct and a few inverter vendors had no advice. Thanks in advance.