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Battery voltage

This is a discussion on Battery voltage within the Wolverine General Discussion forums, part of the Yamaha Wolverine Gen 1 708 cc SxS category; A battery cannot read that high on its own. LOL 13.8VDC or so at best without something charging it. Is there any sign of acid ...

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  1. #11
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    A battery cannot read that high on its own. LOL

    13.8VDC or so at best without something charging it.

    Is there any sign of acid at either post? White or greenish powered, if so I'd just replace the battery since its leaking a bit. It will only make the wiring degrade causing other problems.

    If you have not done so start with the -ve and remove the wiring.
    - clean the lead faces and lugs of the wired cables so that they are shinny.

    Leave off and repeat with the positive. Once done which disconnected meter the battery just to see what it is. Then reconnect in reverse (+ve side first and then do the -ve side). All wires go back where they came from. I am not sure where all the chassis ground are but check under the wheel wells. Regulator is there and likely a ground connector or two. Hopefully no breaks or rust/corrosion on them.
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    Hog Chaser Stix Malone's Avatar
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    Name:  4F8FFABB-8C63-4C64-98E4-ABC813327DB4.jpeg
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Size:  1.62 MBName:  EFD6E347-7B6D-421B-A08C-6CADF71EDC4F.jpeg
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Size:  1.11 MB

    It dropped a little from this morning. It is reading 14.8 with battery disconnected. I think the battery cells are pooched? Took battery out and it reads 15.2 volts
    Last edited by Stix Malone; 08-12-2019 at 06:58 PM.
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  3. #13
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    Well I have one of those meters as well and half dozen more various ones. LOL never can find one have the time.

    I believe the regulator is shot then over charging the battery.
    2017 Wolverine RSPec SE
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  5. #14
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    You might try putting the meter over to DC volts rather than 12 volt battery and see what you get.

  6. #15
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    Quote Originally Posted by Rockit401 View Post
    You might try putting the meter over to DC volts rather than 12 volt battery and see what you get.
    Or a different meter. Something is up with those readings.
    Rockit401 likes this.
    Good judgment comes from experience, most of which comes from bad judgement

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  7. #16
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    I have seen it. It is fake voltage though. Any load will actually take it down really low. I build lithium packs for r/c boats and they will do that crazy voltage thing too when they are shot. But any load at all and they have nothing to give.

    Just put a new battery in it first and cross your fingers things return to normal. Cheapest and best troubleshooting next step there is at this point. IMHO.
    Last edited by danielplace1962; 08-12-2019 at 08:11 PM.

  8. #17
    Hog Chaser Stix Malone's Avatar
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    I will bring it to my mechanic and put on his load tester tomorrow before I go any deeper.
    Last edited by Stix Malone; 08-12-2019 at 08:14 PM.
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  9. #18
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    That battery section of the meter has a built in LOAD test resistor to shunt power. It will overheat and maybe burn up in the meter. Its for small battery testing. Not auto ext. I did not pay attention to the scale you were on. DC Volts is what you want.
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  10. #19
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    Quote Originally Posted by Stix Malone View Post
    Checked battery today after sitting for 2 days in machine with nothing on and no charger on it. Checked voltage at battery with voltage tester and it read 15.2 volts??? How? I’m confused now for sure.


    Tripp I charged battery to 12.8 three days ago. Started machine and instrument gauge read 12.4 and dropped when lights and fan were turned in but recovered to 12.4 when turned off.
    They can do that high voltage thing but it isn't real. Put a load and you'll be short a cell at least.

    Simple troubleshoot.

    You know the battery is AFU. Get a new one.

    Start it up. If you aren't getting 13.5 to low 14 ish voltage readings with it running then your stator or regulator has taken a dump or a wire or connection is bad or burnt up. If that is the case we can go from there but for now you need a good battery first and foremost. $23 at Wally World.
    Last edited by danielplace1962; 08-13-2019 at 11:08 AM.

  11. #20
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    Update: Turns out battery is fine. My multimeter was out of whack (dead battery lol ). Traced wires and found this Name:  D03D49E1-362A-4B4A-8601-9E12F34C0155.jpeg
Views: 20
Size:  1.49 MB. Bottom plug is good because base broke. Upper plug will require surgery as pins pulled out. A stick went up there and did the damage. I didn’t catch the damage even while washing it. A good reminder to inspect right away when sticks come through. We will see what the stealership wants for a new rectifier Thanks to all for the help!
    Last edited by Stix Malone; 08-13-2019 at 08:39 PM.
    Jraoffroad likes this.
    2016 R-Spec SE
    3500 lb. Warn ProVantage,synthetic line,wireless remote
    Yamaha wind deflector
    Yamaha rear bumper
    Yamaha storage box
    Axia Alloys rear view mirror
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    Axia Alloys IPhone mount
    Fuzzy dice
    Perfex 2” Lift kit
    Super ATV high clearance rear control arms
    Rigid 20” Light bar
    LED lighted whip
    Concours dash panel
    Concours fan override Switch harness
    Mictuning switches
    Sony Bluetooth speaker

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