Note - Victron 100 20 SmartSolar has 290w output limit, can handle 350w PV input - in UK conditions 350w PV rarely will supply more than 290w, so there is a good saving in ££ to use this controller, which is why it is in this kit. If you would rather the 30a version you can swap for this, we would only recommend this for European use with better solar production.