I am sorry to hear this. Unfortunately, these lights can only be purchased as a whole unit.
The light from a full charge should run up to 10 hours, however in winter, you might want to change the brightness level so that the product lasts longer throughout winter. You could probably expect up to 6 hours in wintertime.
Our products are designed and delivered in the UK but are manufactured in China.
I would not recommend this as the light needs to be fixed to the roof, there isn't a secure way we would recommend to attach it to a pole.
This isn't possible I am afraid.
I am a little unsure of your question, but the panel can only be used with the Vortex and cannot be used for a heating system.
We have a much large range or motion sensor lights here much upgraded and improved since discontinuing the old version.
The light switch is built into the light head so it's sound like a PIR light would work better for you.
This shed light has a switch on the light unit. The panel must be outside to receive sun light allowing it to charge. The Vortex will only work at night even when the switch is on. If you a light that works in the day and night please look at the beam solar shed light
It really depends on how much lights you need. 10x16" is a pretty large space, for me I'd use 2. The wire from the panel to the light is 5 meters so if you want to put the light on a wall you can but the light is unlikely to light the floor if it's not pointing down.
Yes, they are replaceable, many thanks for pointing out the error that's now been corrected!
Yes, the cable is easily detachable for feeding through a hole. If the switch is on it will come on at dusk however you can override this by turning it off.
You can leave it on, the only possible downside is that the light will always start each day with flat batteries so if the weather is poor during that day the runtime the following evening will be reduced.