many thanks for the welcome both to Heiny and BigJules , I think the secret to good refrigration is to have a top opening fridge with 100mm insurlation , have had it running for 7 days with the last 2 overcast so little charge from the solar panel , temp is 3 c at the senser and - 5 c at base of the fridge . I think it will run the led light at night that are yet to be fitted , so we can free camp with no power problems , many thanks to you both