Your inverter wants to be really close to the battery and have very heavy gauge wire. I had similar problems until I mounted the inverter about 3 feet from the batteries with a 4 gauge wire. Xantrex, Pro-watt SW 1000 w. $257 on Amazon. Dean Agee, AhSeaHola, #912 Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10