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Discussion Starter · #1 · (Edited)
My battery keeps draining. I have a sound bar and sub connected but it never drained it before. Seems like if it sits a couple days I have to jump it. Battery screen after jumping goes up to 13.8 while running. I shut it off and it goes to 11.8. Is it the battery or do y'all think I have something else draining the battery?
 

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Disconnect the sound system and let it sit! you will know! A common problem with electronics on atvs is the exposure to water from washing and elements and it is likely a faulty switch that is allowing a bleed of power . either way disconnecting is where I would start.
 

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Disconnect you possitive cable on the battery and hold your tester on the positive cable and the other side on the positive terminal. If you get a reading on the test meter with key off you have a parasitic draw on your battery. Then eliminate your added electronics one by one testing between terminal and cable as you go. Once the reading/draw disappears you have found you culprit
 

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I had to boost mine the other day after it sat in storage for a few weeks. I'm betting my Stealth 10 Ultra sounder is the culprit. I pulled out the fuse and when I went to plug it back in I saw a bit of a spark.
So I left the fuse out and have the battery charger on it now, will see if it happens again. I will be re-wiring it on a relay so it's only gets power when the key is on shortly.
What do you have for a sound setup?
 

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Yes. These sound bars, if you hook them up directly, will have some drain. If you aren't running it every day, you will drain your battery. Just hook a switch up between the battery + and the sound bar + so you can remove the the load completely. Mine will sit for a month and will fire up no problem.

Good luck.
 

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My battery keeps draining. I have a sound bar and sub connected but it never drained it before. Seems like if it sits a couple days I have to jump it. Battery screen after jumping goes up to 13.8 while running. I shut it off and it goes to 11.8. Is it the battery or do y'all think I have something else draining the battery?
If your battery is sitting at 11.8 with all components in the off state, then you either have a partially discharged battery, a damaged battery, or a component that isn't really "off". Fastest first test is disconnect the negative battery cable and see if the battery voltage jumps up at all. If it does, this means you have a load on it, something is draining it. If this is the case, then you can hook an ammeter in series with the battery post and the cable you just unhooked. You will see a measured current draw in the mA range. Start pulling fuses or disconnecting components one by one until the draw goes away.
 

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I see Yamaha sells an additional battery. When do you need that second battery? How far does the first battery go for performance on powering equipment (Limits of first battery)????

Thanks
 

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Discussion Starter · #8 ·
I also have the stealth 10 sound bar, a 10 inch sub and a 3500lb. winch hooked up. the sub is hooked up with a toggle switch to kill the power but the sound bar and winch are hooked straight to the battery.
 
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