Optima D34/78 Yellow Top Deep Cycle AGM Battery Upgrade for the Polaris Slingshot

(8 reviews) In Stock
  • $324.95
    $281.99 Discounted Price
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  • Part Name: optima-d34-78-yellow-top-agm-battery
  • Part Number: SM-3805

Available Options


Mfg. Part #:

Battery Post Type:


10.06 in.

43.5 lbs.

6.94 in.

Battery Life:
3X Longer than lead-acid

7.88 in.

Slingshot Application Guide:

» 2016 Slingshot Base / SL / SL LE
» 2017 Slingshot Base / SL / SL LE / SLR
» 2018 Slingshot GT LE / S / SL / SLR / SLR LE
» 2019 Slingshot GT / S / SL / SLR

Optima Yellow Top Deep Cycle AGM Battery for the Polaris Slingshot
It's no secret that the factory battery that comes with the Polaris Slingshot could use an upgrade. We've partnered up with the leader in spiral cell AGM style batteries to bring you this Optima D34/78 style deep cycle battery. If you plan on running an aftermarket stereo or add-on 12v lighting products and would like to extend your battery life, this is the battery for you. This Optima battery features 750 CCA and has both a top mount and side mount battery poles so that you don't have disrupt your top mount poles when adding on 12v accessories to your battery. YellowTop Optima batteries are 15X more vibration resistant than traditional batteries and are mountable and maintenance free.

This battery must be used with our aluminum Optima battery upgrade tray (sold separately). We designed these trays specifically for the Polaris Slingshot, and this D34/78 deep cycle battery.

Battery Post Type Dual SAE/GM
CCA 750
Length 10.06 in.
Weight 43.5 lbs.
Width 6.94 in.
Product Details
Battery Life 3X Longer than lead-acid
Height 7.88 in.

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Total Reviews: 8
Average Rating: 4.75

05/11/2020 10:10 am

Battery supplies need some fine tuning
The battery's terminals are reversed from stock, making it a really tight stretch for the cables. I mounted the provided terminals first, being sure to position the posts towards the wires, especially the hot side. The factory connection rings are too small to fit on the provided battery terminal posts! Mine is a 2018. I had to drill out the holes to get them to fit. It comes with wing nuts for the terminal posts...that's a fail. I also got the optima battery tray. Worked very well ($100 for an aluminum plate, but keeps it in place well). It came with a stick on 2" square pad...no idea where that was to go. I had some extra wires/fuses to attach for stereo, fuse block, etc. I mounted and zip tied everything nice and neat before realizing the cover wouldn't go back on. Had to redo accessory wires. Be sure to test fit the cover before finalizing wire locations. I would have given this 3 stars, but had to add another for the exceptional customer service from slingmods!

07/15/2019 5:35 am

Battery upgrade
BEfore you upgrade your battery Google how to disarm alarm system,lol if not behind radio is the black box.

03/04/2019 12:25 pm

Optima Battery
Received the order in a timely manner like always. I was concerned about how the box was tore thinking that maybe the battery had been damaged, but there wasn't any damage to the battery that could be seen. Also got the updated battery box for the Optima. Finally got the battery box installed after having to make adjustments to the holes in the mount on the slingshot itself. (Threaded holes wouldn't line up with the thru holes, so had to increase the size of the thru holes, but finally got it mounted.) Then got the battery in and hooked up, also hooked up the external jumper and a battery mender. Now it's already to get going once the warm weather comes in.

Thanks again for a good product, I only gave 4 stars due to the damaged package, and having to do the extra adjustments to get the battery box in.

Thanks Again

03/04/2019 12:05 pm

Great battery
I was running a lot of LEDs on my stock battery and it could take it. The yellow top works like a charm.

01/28/2019 11:28 am

Both box and battery awesome

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