The Solis RHI series is designed for residential hybrid systems, which can work with batteries to optimize self-consumption. The unit can operate in both off- and on-grid modes. The Solis RHI series has three different models: RHI-3K-48ES; RHI-3.6K-48ES; RHI-5K-48ES. Solis Hybrid inverters are currently only compatible with Pylontech LV and BYD L3.5 lithium ion batteries, not compatible with lead acid batteries. Unit only powers up from DC inputs, if it is used without batteries as a grid-tie, it will shut-down at night.