The output from the controller is 12V DC. This amount is so convenient that we can utilize many electrical devices of cars. A cigar socket is an easy exit device which is just like a socket at home.

We connect a female type of the socket (the leftmost of the picture below) with a charge-controller. Then we simply connect USB output socket with this. Then we can charge phones and turn on LED lamps. USB output has two kinds as mentioned before. iPad and Tablet are recommended to be charged by USB 2.1A because it takes to do sooner than by USB1.0A.

From the cigar socket, we can also use LED lamp which is shown right in the following photo.. This is very energy saving and consume only 1W. Then although it is on all night, we have little consumption.
The below photo shows a Li-ion portable battery, double exit cigar socket, and LED lamp from left to right. If we charge the portable battery, then we can charge phones anywhere and anytime.

Moreover, we have other gadgets.

In the photo below, next to the controller, that is U3/U4 battery charger. The USB terminal on the top is seen. Next to it, there is also a camera-battery charger.

What is next? We want to watch TV. Usually TV sets are run by AC 100V-230V from the grid. A liquid crystal TV set normally consumes 30W or more. Additionally we take account of loss of conversion from DC to AC while an inverter is used for AC TV set. In this case additional battery and panels should be needed in order to strengthen the power..
Therefore practically I recommend the appliances run by 12V DC. In future there will be 12V/DC TV set for off-grid.

The right photo shows USB light. This is also made from LED and is enough for reading light at night.

This is 400lux as lighting power, 1.3W.