4 in 1 solar panel connector adapter kit for optimal charging with DC5521 and DC7909 connectors. Benefits - Efficient current flow: Oxygen-free copper wire minimizes resistance to provide a stable power supply and maximize device efficiency during operation. - Durable insulation: High-quality, fire-resistant insulation withstands extreme conditions and supports long service life. - Broad compatibility: Suitable for solar panels under 140W at 18V or up to 280W at 36V; compatible with Powkey and SinKeu brands. - 4-in-1 versatility: Covers common connector configurations in one kit, reducing the need for extra adapters. Specifications and compatibility - Connectors included: DC5521 and DC7909 - Wire material: Oxygen-free copper - Insulation: High-quality, fire-resistant - Applications: Solar charging for portable panels and solar generators Use scenarios - Scenario 1: Charge a Powkey or SinKeu portable power station from an 18V solar panel under 140W during camping. - Scenario 2: Connect a 36V, up to 280W solar array to a compatible solar generator for off-grid use. - Scenario 3: Use as a quick-replace adapter for multi-brand solar kits while traveling.