The Luminous EcoVolt Neo 2000VA, 24V inverter offers a max load of 1600W and a charging current of 21A. When purchasing this unit, 2 x 12V Inverlast Tall Tubular batteries, either 150Ah, 200Ah or 220Ah are required for operation. Both batteries must have the same Ah rating and be connected in series. This is a DIY unit as it has a standard connection for AC in and AC out.