This powerpack has been designed with multiple industries in mind.

 

It comes supplied in a neoprene carry case and all of the ports have rubber covers too. It has a huge 264W capacity, giving you more than 20 charges of an iPhone 5s.
 
It measures 205 x 105 x 40 millimetres, so is a great size to keep stored in your tackle bag, and weighs 1.275kg. It is finished in black with LEDs to indicate the battery’s life and it has two 2.1A USB ports.
 
Price: £149.99