This question could be ridiculous for some users but I am not able to find the max watts I can put into the battery from the grid using the multiplus II 3000va 48V AC charger. The datasheet is so confusing and also people talks about amps but is not clear if there are DC amps at 48V or AC amps at 230V. At the moment I think the max power I can send into the batteries from the AC Grid is constant 1650 W until the battery gets full or heat or some other programed limits, but I am really not sure, could any one put the number in watts?