I found a Sunwanderer SWD200-12P portable panel kit at a great price, but it is set up in parallel with it's own controller for LA, gel or agm, but looks well built with legs, handle, case and cables. I planned on making my own portable kit but in series with the SCC in my RV and this kit is cheaper than I could buy two panels, then I have to hinge, add legs, etc. My question is if I could remove their PWM SCC rewire the combiner box in series and connect it to my SCC to charge lithium? Are sunwanderer panels any good?