I am building a food cooler for camping this summer. My plan is to build a thermoelectric cooler that is solar powered. My cooler is looking much like this:
including a CPU fan on the hot side and heat sink on the cool side. I bought a 5W, 12V solar panel to run it (and make it so I can also plug it into my car). Both the fan and the TEC will be connected in parallel to the source. When testing with a power adapter, the fan runs only if in series, which would have it going at 6V. In parallel the fan does not run. This is a CPU fan that runs at 12V.
What is happening? Any suggestions for a fix?