This kit is specially designed so that you have everything you need to connect your depth sounder to any kayak fitted with the \"Lowrance Ready\" kit. The kit includes: a 12V 9Ah waterproof gel battery and its charger, connection wires, and battery holder which can be installed next to the mast or in a twist & amp; hatch; seal 8 ””. 72020070 INSTALLATION KIT FOR LOWRANCE READY