It’s worrying that GivEnergy SOC and firmware issues are still prevalent 15 months later.
Makes me swing to a powerwall.
The July firmware on the Gen2 is pretty reasonable for me. The SOC "bugs" are really more to do with LFP BMS - LFP doesn't really change voltage much along it's charge curve, it's more like an accounting exercise than "measure the voltage and you're at x% SOC" are you would have with NMC chemistry.
That's why you're told to charge LFP Model 3 to 100% once a week - Tesla want you to get to a known reference point so the accounts can measure from there.
Once a week, maybe you think you have 2.5kWh when you actually have 1kWh. It's not the end of the world when you're grid-tied.
PW3 is also likely to be LFP based, so it's unclear if the PW3 will have similar issues. My guess is that it'll need to hit a known point regularly, or it'll have similar SOC drops.
That said, the PW prices have really come down and the AIO is no-longer stand-out value.
I'd argue that in most cases, a Giv Hybrid inverter and a couple DC battery is better value (Don't need to buy two inverters, basically) and has great efficiency for any solar you're storing. Last time I checked AIOs and PW are about 2k extra vs DC coupled for the same capacity.
AIO adds higher discharge speed (But I'd argue it's less of a problem than most youtubers. If you run your oven and hob at the same time, maybe you use 0.3kWh while cooking a mean. 10p, big deal)
AIO does off grid mode better, if you get a lot of powercuts
PW3 with direct DC might be a best of both worlds game changer, but we all know what "coming soon" means for Tesla...
Main thing with Giv vs Tesla. the Giv you can tell it what to do, the Tesla you can merely try and influence. If you tinker, the Tesla PW might drive you mad.