Hi, The wire between the splitter and the light head is 2.7m. The lights are waterproof, it will be at least IP44. The battery can easily be replaced, It is inside the panel and this unit takes 18650-2600mah Lithium battery.
It is 50 Lumens for each spotlight.
This light can be adjusted up to 90 degrees. That should work and the light should be able to shine upwards.
The solar panel is 17x19cm.
That should be okay. The cables can be hidden inside the ground etc.
The batteries are pre-installed.
Sadly there is no extension cable for the Apollo at this time.
Thank you for you lovely comments and glad you love our lights as much as we do! These are non USB chargeable.
I am afraid not. We do not sell an extension cable.