Cheers guys but I have not explained myself properly. When I connect the TEC it does not always make a good contact, as Peaky Rider suggests it could be dirty contacts, so while I think I am riding on the TEC, in fact I am draining the internal battery. How do I know that the TEC is actually...
Is there any way to indicate which I am running on? I have a Focus Jam2 and I thought I was running on the TEC but I was actually running on the internal battery which I had wanted to keep charged.