[flybouy]

Inverters are not an efficient resolution as a power bank to supplement low amperage ac voltage conditions. I would think an Autoformer would be a better choice for short duration amperage spikes. Someone else may have a better solution but I would suggest doing your due diligence and research any advice given before laying out the considerable cash that is involved. And don't rely on anyone selling said devices for your research as their solution will automatically be the best. YMMV