For my set up I am running 3 X 115Ah / 1000cca deep cycle batteries and I was using a 35amp workshop charger but I decided to try out Noco's G15000 15amp smart charger, My Idea was to mount the G15000 on board so I could either hook it up to shore power or run it off a generator, I did a side by side with it against my 35 amp charger and the NOCO G15000 did the same job as the 35ah but it did it in half the time and where the 35 started to wreck the battery the NOCO also managed to charge that battery also and restore and repair the capacity of the battery, even though the 35a has more than double to power Nothing can match the NOCO Chargers and they can charge Lithium batteries and boost start the vehicle unlike the CTek,
All of the NOCO Chargers are built like Tanks and having owned many charger from small 5amp bench models right up to the big Snap-On wheeled chargers nothing comes close to the NOCO chargers, I am so impressed by them that the next day I also bought the NOCO g3500 = 3.5 amp and the G26000 = 26amp models, One of the most impressive things I found was in order to match the abilities of the NOCO chargers you would need a charger with more than double the power just to break even against the NOCO chargers,
I have tested all 3 of them using 115 amp DC batteries and I hooked up Fluke multi meters to them all and their charging voltage has an accuracy of 0.001v between the 3 of them and regardless of their power you can leave them hooked up to ya battery for ever with zero over charging and the larger G26000 is a master piece being able to charge 12v 24v and 16v Lithium and 16v AGM High Performance Racing batteries, But saying that the G15000 is my all round favourite and every NOCO charger comes with the same Repair mode from the smallest to the Biggest, and having all that power on tap and being able to use it all sets these NOCO chargers apart from anything else on the market.