Review on 🔋 EPEVER MPPT Solar Charge Controller 30A 12V/24V Auto DS2 + UCS Intelligent Modular-Designed Regulator: The Ultimate Solution for Sealed, AGM, Gel, Flooded, and Lithium Battery Charging (30A,Triron3210N) by Ashwin Patel

I use this charge controller with 2 x 350w panels and a 24v lithium battery and it has worked very well so far (producing around 200kW in the last few months). The serial Modbus interface is very convenient for remote access. A couple of issues I've encountered: Serial commands are sometimes dropped when the output load is not enabled or there is no solar power. It takes several attempts to eventually work. This doesn't happen on my other model (4210N) - the RTC clocks drift about 5-10 seconds a day. This isn't a problem for my setup as I'm using NTP with a remote client and can update the clock, but it can be a problem for applications that depend on timer mode.