4 in 1 Connector Adapter Kit This solar panel connector adapter kit provides all essential ports for seamless integration with DC5521 and DC7909 systems, making it suitable for solar setups. High Current Handling Equipped with 12 AWG and 18 AWG wires, this adapter handles currents up to 7 A. It delivers reliable performance with solar panels under 140 W at 18 V or under 280 W at 36 V. Stable Charging Performance Oxygen-free copper wire core minimizes resistance and stabilizes current for efficient power transmission, while the copper is oxidation resistant for long-term use. Optimal Insulation Material The connectors feature an insulating shell that provides heat resistance, fire resistance and UV protection, ensuring safety and durability in different weather conditions. Use scenarios - Off grid charging with an 18 V panel up to 140 W: connect to a portable battery pack or small devices using DC5521 or DC7909 compatible inputs. - Higher power solar projects: pair with 36 V panels up to 280 W to charge larger portable power stations or battery systems. - Outdoor or harsh environments: weather resistant insulation supports long term outdoor use for camping, RV, or remote installations.