Looking to possibly add a battery but looking at charger inverters.
Looking for recommendations for an AC coupled in Inverter charger, FYI the battery will be in the 5-9kW range.
Must haves
1. AC coupled, not directly connected to existing PV.
2. Must work with existing PV inverters (X2) one Growatt, the other Solis. Not interested in getting hybrid inverters.
3. Must work in a power cut (have had two power cuts this week, one for 4 hours the other for 2 hours)
4. A nice to have would be in a power cut, the existing PV inverters think there's still mains and keep producing.