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| I just got off the phone with Dual Pro and they make a 36volt charger (Pro Extra 3) that runs off the alternator. As long as you're in that 1000-1500 rpm range and the starting battery is above a certain level, the charger will work on the trolling motor batteries. Been fishing quite a few big waters where you may have a longer run so I'd definitely get use out of the alternator charger...
I am trying to figure out the best option for my new rig. I'm installing the Terrova 36V system on it, plus have the starting battery, which is a 48V system altogether. Boat already has a 3 bank Ranger charger on it. I want to install one of the alternator chargers to help with the trolling battery system and maybe leave the current 3 bank onboard specifically for the trolling motor batteries which leaves me with nothing to charge the starting battery except the alternator. I'm wondering if I'll run into many problems not having a charger specifically for the starting battery? I guess it just depends on how much I use it, electronics wise...
Option A: Keep the 3 bank already on the rig and specify that charger for the trolling motor batteries, add a 1 bank charger for the starting battery, and then add the alternator charger for the trolling motor batteries.
Option B: Remove the 3 bank already on the rig, purchase a 48V on board charger for all 4 batteries, and also purchase the alternator charger.
Option C: Leave the 3 bank already on the rig for the trolling motor batteries, add the alternator charger for the trolling motor batteries and rely on the alternator to keep the starting battery charged.
I'm looking at Option B. It is the most expensive rout to go but would be the best set up in my opinion. Anyone want to buy a 3 bank Ranger On Board Charger???? haha!
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