37Appendix CFishfinder 100 PortableWhen storing the Suction Cup Transducer in the case, dry thetransducer and cable to avoid corrosion. If using in Salt Water, rinse thetransducer and cable in fresh water and dry before storing in the case.BatteriesThe Fishfinder 100 Portable comes with a D-Cell battery pack. EightD-Cell Alkaline batteries will provide approximately 20 hours of continu-ous operation. You have the option of purchasing a 12 Volt RechargeableGel-Cell Battery for the portable case. If using a Gel-Cell battery you cananticipate approximately 40 hours of continuous operation betweencharges. Cold temperatures reduce battery life.Installing the D-Cell Batteries:1. Disconnect the Red and Black leads.2. Install the batteries noting the correct polarity.3. Reconnect the Red and Black leads and place the battery pack (batteriesdown) in the provide location within the case.Installing a Gel Cell Battery:Verify that the Gel-Cell battery has male spade connectors installed onthe positive and negative leads.1. Disconnect the Red and Black leads and remove the D-Cell Battery Pack.2. Connect the Red and Black Gel-Cell leads to the Red and Black wires inthe portable case.3. Place the Gel-Cell battery in the same location as the D-Cell BatteryPack. The Portable Case was designed to accommodate a 12 Volt Gel-Cell battery and hold it securely in place.D-Cell and Optional Gel-Cell Battery PacksInstall the battery pack intothe moulded location in thePortable case