THE WIRELESS RECEIVER/CHARGE DOCK

Just like the R.A.T.9 the 2.4GHz receiver is quite unique since not only it has room for the weight cartridge but it can also be used to charge the battery cells (also has a braided cable and a gold plated USB connector).

A piece of metal with the product name and the Cyborg logo is placed on both sides of the dock. 

There are two activity LEDs on the dock, one for when it's receiving signal and one for battery charging. 

Now the good thing with having 2 power cells is that you can always use one while charging the other. So you will basically never run out of juice. 

The battery slot is located at the right lower side of the R.A.T.9 right behind the pinkie grip.

Inserting the cell is very easy, however removing it is not and so i suggest removing the palm rest first and then the battery cell.