Here, I am going to tell you how to make a 3d mode charger tutorials.
I have used following techniques in making of this tutorial.
[1]First take a box of this size in the top view port.


[2]Covert it into Editable poly.

[3]Then switch to polygon mode.

[4]Select the front polygon.

[5]Hit on Insert polygon and insert amount is 8.394.

[6]Then hit on Extrude polygons by 21 heights.

[7]Again hit bevel polygon and adjust it like this.

[8]Switch to vertex mode and adjust it like this.

[9]Your image will look like this.

[10]Then switch to the edges mode and select the all edges and hit chamfer edges by amount-0.7.



[11]Again select polygon mode selects the polygon like this.

[12]Then on Insert polygon by amount-8.642.

[13]Hit bevel and do the adjustment like this.

[14]Again do the same but adjustment should be different.

[15]Then take tube of this size in the front view port.

[16]Copy it one times.

[17]Place two tubes like this.

[18]Then take a capsule and place it like this.


[19]Copy it one times.

[20]Your image will look like this.

[21]Then take line tool and draw a figure and do the following settings like this.



[22]Go to the modifier panel and select Mesh smooth and apply it.

[23]Then take a plane in the top view port.

[24]Press M and select the box and turn it into black.

[25]Select the capsules and take grey color and apply it.

[26]Select the plane as light blue.

[27]And this is your final model.

nice efforts