Fisherman,tried finding connectors but to no avail. Terry you were right,cut the lead to the AA battery box at about 3",put male spade connectors at that end,female connectors on the main lead from the transducer. Best of both worlds,slip the line connector to the gel battery,or to the end plug and use with AA batteries when need be.I like it,thanks everyone!
I also think the charger for $19.99 is a must,it has a shut down with a maint charge.No need to worry about forgetting to unplug the charger.
$34.99 for the battery,7ah.