good day i have a deye inverter giving me trouble 

as soon as it hits loadshedding the unit switches on and off by itself 

i am useing five star 7,2kw hour lithuim battery's

its only with loadshedding what can be the cause please assist 

Incorrect installation on AC side, ring feed from output to input, hot connection on battery, incorrect setting on inverter, comms issue to battery, factory reset required, faulty equipment... many options. The Deye inverters are reasonably solid to my knowledge but you would have to do some fault finding to identify the cause.

Go to the Battery menu and at grid charge , de-select grid signal

that should help