Smart Lighting Solar Floodlight - extension cable avalable?

I have bought 4 for of the Solar smart lighting and love 3 of them. The one does not get enough lighting but has a prefect location. I need to solar panel to reach another 6 feet to have prefect sunlight but can not find a compatible cable. I have found some claiming to work but the connections are too large. Does any one know the size of the cables or know of an items that is compactable? I have went crazy with the cameras all all the other accessories but can not figure this little problem out. Any direction will help. Thanks, Charles

1.35 mm x 3.5 mm DC Power Extension Cable with plugs/sockets