I don't like to review something until I have had it for awhile. I have had this unit for 4 years or so and it has been great. will charge a 10 battery bank in a short amount of time. My 2000 watt Honda inverter powers it at just above idle so it is very fuel efficient to run in Canada for cabin power through the charger. Battery voltage is very good all the way through float, will not overcharge. Unit has always worked and never has even blown a fuse. I am purchasing a 24v unit today to charge my PV set up at my home.