Battery Power 
product Power Media Battery Power Jupio /product/jupio-np-fz100-battery/ $15 Power Media NP FZ100 NPFZ100
Power Media · Battery Power
Jupio NP-FZ100 Battery
You might also need
Battery Power 
10/15amp IP66 to Plug Adaptor
Battery Power 
10A 4 way IP66 RCD Power Board w/ 1.8m braided lead
Battery Power 
10amp / 10m Extension Lead 1.5mm Rubber Flex Cable (Green Tag)
Battery Power 
10amp / 10m Extension Lead Piggyback (Blue Tag)
Battery Power 