These solar panel junction connectors are perfect for my setup. They have very low resistance (ohms), they connect three solar panels in parallel (that's how I designed my setup), my charge controller charges up to 20A, and the maximum output power of the three panels is just under 20A. is the crucial factor.
Efficient Charging With LST 7 Stages 5A Battery Charger - 3.3A 12V For Ultimate Performance
35 Review
70mai Jump Starter Max Midrive PS06 black
37 Review
Case Compatible With Halo Bolt Portable Car Battery Jump Starter 58830/44400/57720 MWh Charger. Power Bank Holder For Halo Power Station 100/For AC Outlet.(Not Fits For Halo Bolt Air, Box Only)
24 Review
Xiaomi 70mai Jump Starter Midrive PS01
120 Review