Those are great, and for that price you're basically giving them away LOL. I paid more for mine on the used market.

Hi sir, i have a serious question. Ive been reading about PID effect on solar panels. Basically its a power lost due to the panels high voltage relative to ground assuming you are running 600v panels in series. The current escapes theough the panel aluminum frame down to the ground. So my question is this. What if you dont ground your solar panels? Can you still experience the PID effect?

This bms work to lithium ion?