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Dual battery for RZR 800

This is a discussion on Dual battery for RZR 800 within the RZR 800 Specific Discussion forums, part of the General RZR category; I've looked everywhere for what to run as a dual auxiliary battery and can only find RZR-S threads... Anybody with dual batteries on a RZR ...


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RZR 800 Specific Discussion Discussions dedicated to the standard RZR 800 50 model

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Old September 17th, 2012, 06:12 PM   #1
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Usa Dual battery for RZR 800

I've looked everywhere for what to run as a dual auxiliary battery and can only find RZR-S threads...

Anybody with dual batteries on a RZR 800?

Already planning on isolating it, just need recommendations on the smaller battery under the driver seat...

Any help is greatly appreciated!

Thanks
Mark
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Old September 17th, 2012, 09:44 PM   #2
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Re: Dual battery for RZR 800

Mach, why go thru all the trouble when you can install a larger capacity battery in place of the OEM.
A case in point, in june of 08 I repalced the oem with a Odyssey (not sure of the spelling) PC925L. This is more than 4 years ago. Last Thursday I was riding the side of a canyon and slipped off. We rolled at least once side and one complete end-over-end and landed in a tree on our side. We were over 70' down a embackment that we needed a rope to get up. I have a polaris 3500# winch which we needed first to tension to right the RZR. Then we spent the next hour winching the RZR up that mountain and starting the engine over three times to supplement the winch. That four year old battery never let me down.
The RZR has a marginal charging circuit @ best and a two battery/isolation switch/charging system will get you????
The PC925L just drops in, it saved my RZR,
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Old September 18th, 2012, 08:59 AM   #3
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Re: Dual battery for RZR 800

Ain't no difference between the two when it comes to installing dual batteries.

I put in an Odyssey 925 as a second battery to run my add ons, it was simple enough to do, and gives great piece of mind.

That being said, I think just dropping the 925 in place of the stock battery would have served me just fine.....but having that guaranteed back up battery is good stuff indeed.

:camorzr:
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Old September 18th, 2012, 11:40 AM   #4
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Re: Dual battery for RZR 800

Thanks for the replies and ideas...

I already swapped out the stock battery with 40amp deep cell so I'd like to get a battery that fits the dual battery compartment purely for starting the bike and use the monster battery (isolated) to run all the accessories (winch, light bar, 2 amps, subwoofer, wakeboard speakers) without worry of not starting when in deep woods..

Thanks again
Mach
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Old September 18th, 2012, 11:49 AM   #5
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Re: Dual battery for RZR 800

Also, OldDogNewTrick - which 925 did you get that fits that lil' compartment? There's a bunch of sub-models to the 925 but they all seem an inch or so too big to fit...

Thanks again
Mach
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Old September 18th, 2012, 12:10 PM   #6
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Re: Dual battery for RZR 800

Quote: Originally Posted by Mach63129 View Post
Also, OldDogNewTrick - which 925 did you get that fits that lil' compartment? There's a bunch of sub-models to the 925 but they all seem an inch or so too big to fit...

Thanks again
Mach
E-Bay, listed as "Yamaha Rhino PC925" Slipped in nice and snug in the storage box under driver seat right next to factory battery.

Installed a BEP Marine compact battery switch/voltage sensitive relay that ensures the second battery is isolated from the cranking battery and that voltage overage will keep it topped off while operating. The switch mounted easily to the back of the shifter housing, and when in the off position, key will not start engine.



Easy install, took a couple hours, and I am not quick.
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Old September 18th, 2012, 01:52 PM   #7
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Re: Dual battery for RZR 800

Be sure you order the PC925L, the "L" reverses the connections. I will fit in the original Batt box on it's side,
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Old September 18th, 2012, 06:24 PM   #8
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Re: Dual battery for RZR 800

OldDogNewTrick & JohnPeq- I mean the storage box under the driver seat, on the '08 is <6.25"D x 4.75"W x 6.75"L with the cover and 7"D x 5.75"W x 8"L without worrying about putting the cover on...

Is this where you're talking about fitting the spare? I take it that I keep the cover off and fab some sort of mud/water shield. Do you have any pictures you can share?

Thanks
Mach
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Old September 19th, 2012, 09:21 AM   #9
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Re: Dual battery for RZR 800

Quote: Originally Posted by Mach63129 View Post
OldDogNewTrick & JohnPeq- I mean the storage box under the driver seat, on the '08 is <6.25"D x 4.75"W x 6.75"L with the cover and 7"D x 5.75"W x 8"L without worrying about putting the cover on...

Is this where you're talking about fitting the spare? I take it that I keep the cover off and fab some sort of mud/water shield. Do you have any pictures you can share?

Thanks
Mach
Don't make fun of my mess!

This is from the steering wheel straight down, cargo bed to the top of the image, and you can see the switch I installed on the back side of the shifter housing.



The 2011 did not have a cover on the storage area, just wide open, but the dimensions you give without the cover seem about right. I'd measure for you but my ride is in the mountains. The measurements were pretty tight and I was not sure until I got the battery it would fit, but it did, snugly.

I've cleaned up some of that wiring mess you see there since, but as I said the install was simple and has worked as advertised since putting it in. I do not worry about running heater fan, aux lights, EPS, music, etc anymore. Think the entire set up cost me around 225.00
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Maxxis Big Horn 26X9X12 tires on OMF Beadlock Rims
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Old September 19th, 2012, 11:48 AM   #10
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Re: Dual battery for RZR 800

OldDogNewTrick,

What mess?

That's exactly what I needed to know! Guess i'm ordering the battery now...

Thanks all for the great help and ideas!
Mach
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Old November 3rd, 2012, 11:05 PM   #11
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Re: Dual battery for RZR 800

OldDog, how is the 2nd battery secured?

I use that space currently for the mess of wires from the radio
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Old November 5th, 2012, 08:34 AM   #12
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Re: Dual battery for RZR 800

here is my set up. Im running a UTVINC 60 amp alt. that keeps them charged all the time.

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Old November 5th, 2012, 08:40 AM   #13
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Re: Dual battery for RZR 800

here is a better view

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Old November 5th, 2012, 03:00 PM   #14
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Re: Dual battery for RZR 800

Quote: Originally Posted by Plainsman View Post
OldDog, how is the 2nd battery secured?

I use that space currently for the mess of wires from the radio
Sheer gravity, it is a biotch to dig back out of that space, put some padding under it and let it ride.
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Polaris Soft Cab and Heater and Flip- Out W/S
Polaris Front and Rear Brush guards, S Flairs, EPS, EBS
Polaris Accessory Rack with Gun Rack and Gun Boots
Maxxis Big Horn 26X9X12 tires on OMF Beadlock Rims
FUTV 1/2" Skids, Sliders, A-Arm and gas tank Protectors
Makin Trax Progressive Springs, Walker Evans Shocks, Dual Batteries, Sirius Satellite Radio
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Old January 13th, 2013, 01:44 PM   #15
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Canada Re: Dual battery for RZR 800

Quote: Originally Posted by olddognewtrick View Post
Quote: Originally Posted by Mach63129 View Post
OldDogNewTrick & JohnPeq- I mean the storage box under the driver seat, on the '08 is <6.25"D x 4.75"W x 6.75"L with the cover and 7"D x 5.75"W x 8"L without worrying about putting the cover on...

Is this where you're talking about fitting the spare? I take it that I keep the cover off and fab some sort of mud/water shield. Do you have any pictures you can share?

Thanks
Mach
Don't make fun of my mess!

This is from the steering wheel straight down, cargo bed to the top of the image, and you can see the switch I installed on the back side of the shifter housing.



The 2011 did not have a cover on the storage area, just wide open, but the dimensions you give without the cover seem about right. I'd measure for you but my ride is in the mountains. The measurements were pretty tight and I was not sure until I got the battery it would fit, but it did, snugly.

I've cleaned up some of that wiring mess you see there since, but as I said the install was simple and has worked as advertised since putting it in. I do not worry about running heater fan, aux lights, EPS, music, etc anymore. Think the entire set up cost me around 225.00
Did you use the OEM Polaris Auxiliary battery hookup or just that marine switch
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