I have a 48 volt 3500 watt solar inverter ( all in one) it is a Li Time,never used, about a year and a half old. Asking $300 obo. I also have a Li Time 48 volt battery 100 amps,about a yr and a half old,never used asking $500, or obo. I also have a filtration system and expansion tank, never used its an express water filter. never used $50. Solar Inverter and battery have screens and can communicate to each other.