Directly connected to the solar panels (do not need to connect the battery) by MPPT function, APL functions. Vmp:26-33; Voc:34-38V/ Vmp:35-39;Voc:42-46. 120VAC(90-140VAC) or 230VAC(190-260VAC). Please leave note for your special request e. Please do NOT leave negative or neutral feedback without any contact.The item "110V GWV-500W Tie Solar Power Inverter Pure Sine Wave Panel Charger Generator" is in sale since Monday, August 15, 2016. This item is in the category "Home, Furniture & DIY\DIY Materials\Solar Panels". The seller is "urstock14" and is located in Singapore. This item can be shipped to North, South, or Latin America, to all countries in Europe, to all countries in continental Asia, to Australia.