The inverter cut them off at that voltage🤔🤔🤔🤔🤔. I have now done everything possible to check the batteries voltage 12.7 charging at 14 volt via solar MPPT and inverter. I have put them on a smart charger and it shows that the batteries are 100%........ Could it be that with the solar it overcharges???? If I run it in daytime LS then it runs up to 4 hours on solar........