Elephant K100 Custom Made Kayak Battery Box Waterproof Floating Battery Case for Powering GPS Fish Finders Led Lights and Much More Will Float with any standard 6"x 2.5"x 4.5" battery of 12V with 7 to 10Ah, will also fit 6"x4"x4.5" of 12v and 12 Ah but will not float. 4 pin IP68 Marine Grade Polarized connectors . ( Waterproof even when the plug cap is off ). Dual watertight marine grade Fuse holders with 14 AWG wiring 1 per outlet. Custom Made By Elephant Cases USA note: BATTERIES NOT INCLUDED note: HARNESS FROM CASE TO EQUIPMENT NOT INCLUDED .