Jackery Solar Panel Connector (E1500B): Allows you to connect two Solar panels to one DC port of Explorer 1500 Jackery Solar Panel Connector (E1000/E880): Allows you to connect two Solar panels to one DC port of Explorer 1000 and Explorer 880 BUILT TO LAST: Filmed with PVC material, the cable with a 0.28 inches diameter is flame-retardant and durable that can be used for off-grid adventures SAFE & RELIABLE: Please avoid usage during rainy days/wet environments