The solar panels attached to a solar garden light are able to store more electricity more efficiently and ensure their internal rechargeable batteries are fully charged at the end of each day; at the same time low energy
led outdoor lights are both much brighter and consume far less electricity than traditional incandescent or halogen light bulbs.
The most obvious advantage of a solar garden light is that it does not need to be connected to a supply of electricity, as does mains powered and low voltage garden lighting, since the solar panel ...
An LED garden light that can be powered this way will have this noted somewhere on the packaging.
Normally however, you should power led outdoor lights using only an LED transformer (these are guaranteed to supply a constant 12 volts) and similarly use ordinary 12v transformers (which may vary their output ... 
