Hi John, 
 
	Thanks for the tips and yes the battery is AGM type. I have read many heartache stories on here re DPF woes, so I shall heed your warning and do as you suggest. 
 
	I tend to turn the stop/start off as I find it annoying and as I don't live in a city I can see little, or no benefit in leaving it on. Of course others opinions may differ. 
 
	Keep in touch 
 
	Dave