Triggerxi77

Very late late response, the GW5048D-ES was a good buy back in 2020 given what was available back then. The ad might have been misleading, but it can blend power when the grid is on and give up to 40amps at 230v which is where the 9200W comes from. Mine has run on close to 8000W on grid without issues. The down side is off grid it's only rated at 22amps which is atound 4800W. Depending on the price and your need you can't go wrong with it and 5 x 2000W pylon techs! These days a Dye or sunsynk is probably a better option since they allow generator input which is a bonus if you want to go off grid and top up with a genny.

What will the total cost be to set this up and how much power will it deliver to your inverter (after going through all transformations)? You need a charger for the 12v battery; then you need a charger to charge the 48v pylontech from the 12v battery (would love to know if that is even possible!). Then you need the 12v battery. You mention a 100ah battery - is this normal lead acid? Best case you get 30% out of it unless you want to kill it quick. Thats 400W usable from the 12v battery, but after all the conversions how much will actually be available at the end point (your house)? If the loss between the 12v and the pylontech is 20% and the loss between the pylontech and the Axpert is 20% (I'm guessing here) that leaves 64% of the 400W = 260W. Is that enough for a rainy day? I'd rather get a good quality pure sine wive inverter. 2kVAs go for around R12000 - heres the first hit doing a search. Just run straight of the genni when the battery is dead for the 2 or 3 days a year when you need it.

It may be a bit late, but I've been struggling with this too. GIven the amount of loadshedding we've had and it being winter (cloudy in Cape Town). I've had my solar for 2 years and had no real issues. It is a 4.6kw Goodwe hybrid inverter and 2 x pylontech US3000 batteries (does not say B or C but I think it's Bs). On the spec sheet in the booklet that comes with the batteries it says the recommended discharge current is 37A, Max 74A and peak 100A@15seconds. It does not state any time against the 74A, but after some web searching that seems to be for 5min only. All of this is at a around 50V If I do the math it should be able to continuously give 37*50=1850watt per battery. My batteries are in parallel so it should be able to deliver double that i.e. 3700watt. With the loadshedding and no sun the MBS seems to shut down at around 2700... Which is a pain. I was expecting to get at least 3500 and up to the 4600 (inverter max) for the 5min when you want to boil the kettle during loadshedding. Toanswer your question: 1 battery will not do the trick. I'd love to hear from anyone else that has a similar setup and feedback on how the system behaves when only on battery.