Hi, a few weeks ago I had ordered the Schaudt EBL 208, with the corresponding switchboard (LT420) Today I wanted to try the whole thing at home in a free minute, before I pack everything, drive to my bulli in the barn and connect it. So I only have the following – EBL and switchboard – 220AH battery – a 12v LED lamp So the build-up battery as in the switchboard connected. On the inputs is also electricity, but on the switchboard nothing touches. Ngen is also not a juice. I just measured it. Can it be that you can not use EBL with only one battery, but that starter battery, D+ etc must also be jammed? Does someone know possibly how I can measure it best to find out where the error lies? As I said, the inputs have electricity. Whether it’s on the EBL or on the board I can nciht say… :/ Thank you very much! noob