I have used many of these types of adapters and they are similar to other manufacturers' adapters. They create a parallel connection between two panels. If you have more panels, consider a type with more connectors and no cables. I found it easy to work with and would recommend for weatherproof connections.
70mai Jump Starter Max Midrive PS06 black
37 Review
Xiaomi 70mai Jump Starter Midrive PS01
120 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Efficient Charging With LST 7 Stages 5A Battery Charger - 3.3A 12V For Ultimate Performance
35 Review
Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review
Rechargeable screwdriver OA-3,6F (433.0.2.00), 3.6 V, 1.3 Ah Li-ion, blister
46 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review
Reversible Mi 16-in-1 Ratchet Screwdriver
21 Review