Interesting. In my tests I got about 115 watts from a 12 volt “car” port (actually a Bluetti EB55 output) through the charging enhancer into a Bluetti EB240.
I was getting around 95 watts out of a slightly depleted 12 volt lead acid battery into the EB240 through the enhancer. The battery was discharging at around 11.7 volts in the test.