I bought a 48V 65Ah battery and the GX-500 sound bar for my 2017 EXGO RXV. So far the battery has performed great and I'm loving not having lead acid batteries to deal with anymore.
The install for both the battery and the sound bar presented some engineering opportunities let's say. I have attached pictures of my install to help other RXV owners if they encounter the same issues. I'll start with the battery install.
The RXV doesn't have a great flat area to install the battery, so I put down a few 1x4 slats that I bolted to the floor. I used the long bolts to install the battery such that they went through both the slats on the floor. For the middle board I had to counterbore the forward most bolt so the battery could sit flush.
The charger fit perfectly in the back, I put two bolts through the bottom and two through the lower of the four holes on the upstanding flange.
I placed the converter as far forward as possible as the wires barely reached the terminals. You can place it pretty much anywhere on the driver side under the seat but you may have to splice the wires to get them to reach the battery if you place it closer to the rear wheel.
The bus bar I put right behind the converter and it is very easy to install and sits in an accessible area for if I want to add more accessories in the future.
The charging port and mounting plate required me to open up the holes to accommodate the existing fasteners. I also had to add two holes to the mounting plate as the four pilot holes had two holes that didn't match up. The mounting plate is a universal one so the RXV must be the exception to the mounting hole configuration. Also when mounting port itself to the mounting bracket, I had to steal shorter fasteners from another part of the kit as the backsides interfered with the nutplates for the mounting bracket.
Other than figuring out how I was going to rig up some of the modifications, the install was very straightforward.
Lastly, I wanted the screen and power button easily accessible and located it in the dashboard. This was a PITA to install there just due to trying to get the fasteners through the plastic. There wasn't enough room to get a screwdriver in there so I had to push as hard as I could on a ratchet head while rotating it over and over again to finally get the screw to engage. Not much that can be done with this as it's a cramped space. Unless you want to dismantle the whole front or try and punch through from the underside, which also features tight spaces. I drilled a hole through the side of the glovebox to get the cable to the middle and ran it with all the other cables under the floor to the battery compartment.
The sound bar presented a challenge because the RXV does not have a favorable geometry for attaching the sound bar. I ended up having to flip the T brackets upside down, bolting one bolt through the metal bar, and one through the roof itself. I need to swap out the inner bolts for shorter ones but that is work for future me to do.
The cables for the sound bar came up about 6-12 inches short so I had to splice them to get to the bus bar.
All in all, I am very happy with the battery and sound at so far. My only complaint is there was significant modification work to get it installed on my RXV. Not having installed it on another golf cart I can't say if that's just because the RXV is simply not designed very well for mods or if it is a shortcoming with the kit itself. However, this is a DIY kit for a battery conversion, so should probably be some user ad libbing involved.
I did have a question during install. I sent an email and very quickly had a response so that was pretty awesome. I didn't use it other than that, but the support service would be extremely valuable for someone who doesn't want to waste brainpower figuring out how exactly they are going to install something.
Again, overall very satisfied with the battery and hopefully my pictures can help other RXV owners with their conversion!