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  1. #1
    tomgtv's Avatar
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    Battery and Charging Question

    I seem to remember that someone posted the Ultra has a gel cell type
    battery. What charger would be best?

    I have one of those small battery tender chargers that I connect to
    my SeaDoo a few days prior to running. Seems like by letting the battery
    go all the way down it screws up some of the cells. My relatively new battery (6 months) runs down over the course of 3/4 hours of running (charging circuit seems to be workinkg OK). The transformer on the battery tender heats up quite a bit in normal operation so I'm reluctant to just leave it on the battery week in and week out.

    What's the most sophisticated charger you can get out there?? One that
    could charge more than one battery at a time, maybe have some kind
    of cycling so it charges fast when needed then goes to trickle/maintenance. I'd like a meter. Don't know that I would want one
    of those giant size ones on wheels that shops use though.

    I'd love to access the 12v battery system on my car to power a charger
    if needed in the field for a boost. I saw some guys jump starting a ski
    by pulling their truck almost into the water and using jumper cables. I was waiting for something
    to go boom! Electricity & H20 don't mix!


  2. #2
    My son (mohawk man) jeffsntx's Avatar
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    I have a solar powered battery MAINTAINER for my skis. I have the panel attached to the eve of the house and then ran the wiring into the garage. Then I wired both skis with a pac connector that has a seal to keep water from corroding the connections. When I get home from the lake I put the trailer in the garage and pull the seats off of them and just plug 'em in. When I unplug them I have caps to put over the plugs on the skis that are waterproof. My skis can sit for 6 months and when I get them out they never fail to start and the batteries last for about 4 years. The maintainer pulses milli-amps instead of a constant charge to keep from overcharging the batteries. The one that I use is made by Midtronics. This is basicly the same thing they use on high end bass boats, they call them onboard chargers but they are really maintainers.

  3. #3
    My son (mohawk man) jeffsntx's Avatar
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    Here is the info on the maintainer that I use. It is the one on the bottom, The maintainer not the charger.
    http://www.global-merchants.com/home/solargzr.htm

  4. #4
    Moderator RX951's Avatar
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    Last edited by RX951; 01-20-2007 at 01:50 PM.

  5. #5
    way2fast's Avatar
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    Quote Originally Posted by tomgtv View Post
    I seem to remember that someone posted the Ultra has a gel cell type
    battery. What charger would be best?

    I have one of those small battery tender chargers that I connect to
    my SeaDoo a few days prior to running. Seems like by letting the battery
    go all the way down it screws up some of the cells. My relatively new battery (6 months) runs down over the course of 3/4 hours of running (charging circuit seems to be workinkg OK). The transformer on the battery tender heats up quite a bit in normal operation so I'm reluctant to just leave it on the battery week in and week out.

    What's the most sophisticated charger you can get out there?? One that
    could charge more than one battery at a time, maybe have some kind
    of cycling so it charges fast when needed then goes to trickle/maintenance. I'd like a meter. Don't know that I would want one
    of those giant size ones on wheels that shops use though.

    I'd love to access the 12v battery system on my car to power a charger
    if needed in the field for a boost. I saw some guys jump starting a ski
    by pulling their truck almost into the water and using jumper cables. I was waiting for something
    to go boom! Electricity & H20 don't mix!
    The best battery charger for small batteries like those used in PWC and motorcycles is the Battery Tender Plus. I don't know which Battery Tender model you have, but the Plus is a 1.25 amp charger that only charges when the battery is low, once it reaches full charge it switches to a "float" mode and monitors the battery, charging again only when needed. It will not overcharge like a normal charger (even a trickle charger) will do to small batteries. It has an optional cigarette lighter plug adopter. But it won't work to jump start a dead battery. You need a portable power pack for that. The charger gets warm when charging (red light on) when it goes into float mode (green light on) it stays at room temperature. If yours is always "hot" chances are your battery is NG. You said that the battery runs down after riding for 3/4 hour....more proof that the battery probably has a weak cell and is due for replacement (run the battery completely dead just once and it will never be the same !) Battery Tender also makes 4 bank chargers that will charge multiple batteries at once.

    Richard

  6. #6
    tomgtv's Avatar
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    Thanks for input

    I just looked at my charger, Delran Battery Tender Junior, only outputting
    750ma or .75amp.
    Looks like this http://www.vdcelectronics.com/batteryminder_12248.htm
    Batttery Minder 12248 looks like a good model.

    I want to mount it on the double trailer and feed both the SeaDoo
    and the Ultra. It comes with a nice pigtail that has ring terminals
    for the battery and a shielded connection to attach to the charger.

    I would like a fixture on the hull exterior, probably high up near battery
    that is water proof. Jeffnstx mentioned a PAC connector. That way
    I can just plug the trailer mounted charger into ski's without removing
    seats or battery access compartments. I used to have a telephone/tv
    connector mounted on hull of my boat with a screw on chrome cap. I
    guess I'll have to head to boat store and find something.

  7. #7
    Moderator RX951's Avatar
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    I've been using this one for 10 years now, no problems. Even had one on my show car for 5 years. I alternate it now between my 2 skis.
    Cheap, simple and effective. My Ski has a Walmart battery and is 4 years old and still working fine.
    http://www.harborfreight.com/cpi/cta...emnumber=42292
    The floating circuit maintains a full charge without overcharging. Includes automatic safety shut off.

    The main purpose of keeping it on float is to prevent any sulfation of occuring when the voltage drops.

    The Battery Tender is good one also.
    If your looking for longevity, A good Oddyssey GEL cell and a Battery Tender and you should not go wrong.
    Last edited by RX951; 01-20-2007 at 12:47 PM.

  8. #8
    tomgtv's Avatar
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    thanks, yeah I saw that Odsessy battery, looks like the best
    one I've seen.
    Here's the Perko waterproof deck/hull 2 prong connector I'm going
    to use as an FYI for eveyone. (at bottom of page)
    Attached Files Attached Files

  9. #9
    way2fast's Avatar
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    Tom; That charger should work but wow is it pricey !! The Battery Tender Plus only costs $40. It also comes with a plug in module that rep-laces the alligator clips if you so choose. I only put the charger on my skis about once every 7-10 days. It takes a couple of hours for the light to turn all green, then I disconnect it. If you get that costly charger don't use it in any setting other than the 2 amp with the small PWC batteries.

    The Perko deck plug is a good idea. I was going to run the plug that comes with the charger out of the battery compartment and just leave it in the storage bin. But the way you want to dd it will be more convienient.

    Richard

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