I have dyness 5KW battery Model DL 05 with SolarMax Orion Inverter 6KW, I found very difficult to fix the battery with inverter, two mechanics were changed. The battery was a 75% when its communication BMS was fixed. I have used 3 fans and 1 fridge 4 lights but it provided me only 4 hours back which is far below my expectations. Any body can help.