Quote:
Originally Posted by Mee-n-Mac
I'm no expert either but perhaps I can help. When you say you can only get 12V to the motor, when is this happening ? I mean what are the connections between the batteries, the motor and the charger ? When you say you wired it direct what were the connections then and what fuses were blown ? What I'm wondering is IF you have to manually remove a jumper/connection between the 2 batteries when charging (so as to have only 12V) and replace it when trolling (so as to get 24V). I tried searching the WWW for info on your unit but didn't have much luck. About all I could find is that the parent company for your charger is thought to be GoldenEye (see last post there and if this sounds familar for wiring). Still ... how hard can it be ? 
Note the warning on the diagram below. Perhaps your outputs are not isolated and the wire between the batt 2 + and the batt 1 - needs to be disconnected when charging. Then again perhaps it's just the connections that are not proper. See if the diagram makes sense to you and comment how close your system is to it.
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My system is pretty close to the drawing you posted. The Dual Phase II book says to remove the series connection between the 2 aux batteries. This was done. It also says their unit ..."is equipped with internal series/parallel switching. Therefore all other series connections must be removed or severe damage may result..." There are two output connections on the side of the charger, one for 12v and one for 24v. The 24v is hooked up to the trolling motor. When I noticed the trolling motor slowing down, I checked the voltage at these terminals. Both read 12v.
When I tried to hook the batteries up directly, I bypassed the charger as shown in your solid lines using the wires that were installed from the tr. motor to the charger. I smoked the wires and burned out a 30A fuse. I put in heavier wires (#8) and a 60A fuse. The motor ran at 24V until I melted the connection from my boat to the trolling motor. This told me that the motor was never set up properly and that I only had 12v from the start.
At this point I got a little gun shy and have been trying to get some professional help...