Thanks for the replies, well turning Bluetooth off in bios had a dramatic effect, don't know why?
I was comparing it to my 2008 Macbook Pro and it lasts days on sleep.
Anyway much better now.
The Specs are pretty much stock 16G Dell Mini 9 . a larger SSD
would be good any suggestions , Runcore seems to be the preferred
Thanks again I have learnt a lot from forums, I have had ups and downs with my Mini on OSX but now seems ok although kernel panics on cold boot sometimes, just restart and seems ok again.
A side note I wanted to run OSX Server Admin on the Dell Mini 9 for my headless Macmini but says screen too small , any way to fool a program into thinking screen is larger, currently just use screensharing
bit off topic but thanks for all your help