Sungrow make budget inverters that come with all the latest features. They promise a medium lifespan at a low cost.
BYD is the largest lithium manufacturer in China and one of the largest manufacturing companies in the world. Their lithium range will expand up to 400kWh making them suitable for large off-grid or even commercial applications. BYD is certified for use with Victron and SMA inverters which gives us plenty of options to meet even the toughest of conditions.