This mobile/portable inverter system is called Lipo4(Lithium phosphate batteries).It is an energy storage battery,which is more durable,portable,longlasting and less expensive energy storage battery.
It has over 5yrs lifespan and over 5000cycle life. Its noiseless and harmless,even its very light in weight and can be moved around easily.
It more than 4times life cycle over Deepcycle batteries. And the cost is not much at the long run compared to deepcycle batteries.
Its more situable for solar system.
It comes in various sizes like;96ah, 100ah,200ah and 400ah.