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  1. #1

    Ulterra batteries. ac recharge or dc to dc.

    I recently bought a nice secondhand Ulterra 112lb 72 inch for my boat ( Stacer 565 Coral Runner ). I know this is overkill for my boat but the deal was too good to pass up, at least i will be able to plane on the electric motor .
    My question is about recharging the batteries. I have 3 x 130 amp AGMs and I am undecided as to whether I should put a 3 bank charger on the batteries and just plug into the house power when i get home or install a DC to DC 32v charger so it charges as I travel.
    If i go with AC then I can keep them topped up if I go for a while without using the boat but I cant top them up out at sea.
    If I go DC then the opposite applies.
    I do fairly regular day trips and when the weather permits we stay out overnight so would be spotlocking for long periods. I assume these batteries will have a pretty long usage period before needing a recharge but have nothing to base that on.
    Any help is appreciated.

  2. #2

    Re: Ulterra batteries. ac recharge or dc to dc.

    Dc to Dc will never keep up. The AC charger will be a better option. Add one of these - not hugely expensive.

    http://www.yandina.com/troll36info.htm

  3. #3
    Ausfish Silver Member 552Evo's Avatar
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    Jul 2016
    Location
    Melbourne

    Re: Ulterra batteries. ac recharge or dc to dc.

    Quote Originally Posted by scottar View Post
    Dc to Dc will never keep up. The AC charger will be a better option. Add one of these - not hugely expensive.

    http://www.yandina.com/troll36info.htm
    Looks like an easy setup system scottar, so the schematics only show the trollbridge wiring without showing the series cabling for the troll motor, and it charges each battery 12v (in parallel ) while allowing the trolling motor to run 24 or 36v in series.
    Sorry I had to type it out it makes it sink in my sultana brain.


    Saltwater fishing, boat mad but has a job that gets in the way.

  4. #4

    Re: Ulterra batteries. ac recharge or dc to dc.

    Quote Originally Posted by scottar View Post
    Dc to Dc will never keep up. The AC charger will be a better option. Add one of these - not hugely expensive.

    http://www.yandina.com/troll36info.htm

    I have been looking at these:

    https://sterling-power-australasia.c...20a-12v24v36v/

    or for AC feed these:

    https://www.boatingandrv.com.au/prom...tery-chargers/

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