I used a 12v 210ah system with solar panels at 350w. I bought this inverter because my previous one, also AIMS, is fantastic at 1000 watts (2000 peak), but it was 12v and this limits the number of solar panels I could have in my office network. I did a 12V to 24V conversion, reducing my 220Ah to 110Ah but increasing the voltage. For some reason my solar panels weren't charging the battery system fast enough (either that or the inverter was using more power than it was charging). Not quite sure, even a local electrician (a friend of mine) tried to setup the SRNE ML2440 charge controller to make sure the configuration was correct. We changed the wiring to 4mm to reduce resistance, but the system still ran inefficiently. And I noticed a delay of 2 times. 1. More time to swap out the same batteries and 2. The charging process will be depleted faster under the same load. This AIMS is great, but I don't think it's suitable for the solar system. I think it's better to use an inverter designed for solar panels.