This message is appearing 

on my solar inverter display 

does anyone know what it means ?

?? Battery problem or connection problem

phil

According to Redarc, change the battery
A connection problem would produce a different error message.
Check the battery date, it may still be covere4d by warranty

Thanks

batteries not that old so will check warranty situation 

The guy from Redarc rang me back about this situation 

it turns out that if you select Storage instead of Touring in the options and there is a load on the batteries ( in my case the 12 v TV) the batteries will drop and the dry cell detected in output battery signal will come up

As my batteries are new I will check and recharge batteries and reinstall 

will let you know how it goes 
Fingers crossed

-

Phil