Fantastic piece of kit. For the marine industry I can't find better as having anderson DC out allows me to power the whole system (except the windlass) and with the add on battery also having another I am powering my eberspacher independently. And with every unit accepting up to 2100W of solar/wind/ hydro or alternate charge, 2 or 3 units provides all options. Quality build is at industry level and these little power banks can fit pretty much anywhere. . . . Highly recommend.