What is inside the Deus coil ? Where is the battery ?
On the left you find the electronic circuitry. The 2 rectangular boxes are the relays that you can hear when you change the frequency.
On the right you find the lithium ion battery 3.3V , old generation with low capacity.
The blue box at the left is the 2G antenna on the picture below:
Of course, do not try to open your coil... this experiment was made on a coil that was definitly damaged.
It seems not possible to open the coil for extracting the battery without damaging it: the battery is contained inside a plastic box that is soldered with glue to the coil.