Portable power supply

A good PPS is vital for a constant steady flow of energy to all you equipments when you are outdoors either just for observation or astrophotography. The equipments normally consumes a lot of amps especially when including mount, main & guider cameras, filterwheel, dew controller etc.
The portable power supply that i have builded, consist of 4 separate cigarette females adapters on one side, and on the other side a unit of two more with four USB female sockets. The battery is a AGM 90 amps supplying 12v.


Battery:                                         120 euros 
Cigartte Females Adapter x4          20 euros
Cable & Fuses                                  8 euros
Portable Carrier                              43 euros