bank charger

[fishingbuddy]

Could someone explain to me what a dual bank charger charges? I have absolutly no power to my master switch on my 18.5 fishhawk. I plugged in my on board charger and got 2 green lights to on the indicator. Is this charger only for the trolling motor? I put the battery charger on the other battery and my master light now has power indicating dead battery. I always thought when I plug in the charger both batteries were getting charged. Any advice would be appreciated..

[Moose-Hunter]

Basically a dual bank charger is one that charges two (dual) batteries at one time. Depending on what make of on-board charger you have, 2 green lights may indicate those two batteries are charged and ready. OR... Since you report a "no power" condition, that there may be a broken connection somewhere in your charger cables running to the batteries.

Could you provide a bit more info as to your battery set-up for your trolling motor? 12V or 24V?

[fishingbuddy]

It is a 12 volt trolling motor. When I called a boat dealer in Forest Lake he told me the the bank charger had nothing to do with the starting battery (the one I am charging now). I am really confused where the dual bank comes in. I like you thought it meant each battery.

dave

[Moose-Hunter]

If you have only two batteries in your boat, and the on-board charger is connected to both, I'm going to guess that your start battery has gone the way of the buffalo. Any idea of how old that battery is?

A couple other things to check...

First would be the fuses on the on-board charger cables. Next, check the output of your on-board charger. Use a volt meter and read the voltage from the suspect battery with the on-board charger off. Then plug in the on-board charger and see if the voltage goes up. In both scenerios, you should see a voltage reading above 12V with the charger on being even higher.

Give those a try and see what happens...