Murphy's friend Guru Joined: 04/10/2019 Location: AustraliaPosts: 629
Posted: 01:40am 29 Mar 2023
Mike, you might want to think about that all on one a single trolley idea.
My dual stack inverter (2 x 3KW cores) weighs around 50kg. Adding a decent size GTI and battery charger would more than double this weight. But my battery trolley with 20KW of lithium batteries is over 150kg. Combining all that would make for a very heavy trolley, heavy steel sections and beefy (expensive) castors.
If you are considering LA batteries then it will be much heavier still, beside I think it's not a good idea to have electronics and big (LA) batteries in close proximity.
Your other (over complicated ) idea of switching two cores in parallel, or not as power demands, is something I would not consider at all. For a start, you need two heavy primaries to be switched as well, which complexity and expense would surely negate any saving from miniscule idle current gains.
< 20W all up idle power for a 5+KW inverter is much better than many very expensive commercial units. Put your money toward decent batteries and solar capacity and you win in the long term.
To give you an idea what works here: I had 5KW of panels and 20KW of battery capacity which (with similar power demand you quote) drained the bank down to 70% of its capacity overnight, usually. The battery bank was back full by mid morning in Summer and late morning in Winter.
IMO 16 HY4008's are good for 5+KW, no problem here with that.