Quick, easy question (I hope)

[patroutbum]

Looking at converting a 2019 Yamaha cart from lead acid to Lithium using a Mosasaur 48V 105Ah Golf Cart Lithium Battery. A bit of a risk but at $1,200 it was hard to pass up. (Amazon $1,899 with a $700 off coupon that comes and goes and changes in value)

My current confusion is with how to get 12 volt power for lights, etc. The cart has a voltage converter that is somehow driven off the existing 6 X 8 volt batteries but short of tearing out a lot of "stuff" I can't see how it's wired. I'm assuming somewhere in the wiring harness there are wires feeding 48 volts into the converter but I frequently have bad luck when I assume. If I'm correct (and lucky) I shouldn't need to do anything but connect the main cables to the new battery. I'm concerned because my life usually doesn't go that way.

Any insight would be greatly appreciated.

[Volt_Ampere]

If it has a 48V to 12V converter, then what you say is correct. I don't know how your cart came from the factory. My 2009 and 2012 did not come from the factory with lights - they were installed at the Yamaha dealer before they sold them. Both are different - but both have a 48V to 12V converter. I would try to locate the converter and make sure that's what it is. Some carts cheated and used 2 of the 8V batteries with a resistive reducer to lower 16V down to around 12. I hate that method and it doesn't work at all with Lithium anyway. My cart had the converter 48V wires connected to the 48V and common lugs on the FLA batteries along with the heavy gauge wires for the drive system.

[Lochlin]

Man, that converter can't be too hard to find. The wire from your light switch should lead right to it. No matter. So long as everything that is currently connected to the positive and negative of the new battery is done the same as the old ones stuff will work.

Not for nothing but I put a $1400 Amazon 48v lithium battery in one of my carts a couple of years ago to the chagrin of a few posters here who doubted that it would ever work and last. The cart's been perfect since, though. I think that $1400 batteries for folks who use carts like most people do are fine. People who do extreme things with their carts probably need something more than that, though. I simply can't justify $3000 batteries for carts that see occasional use and light use at that.

[Mark1357]

If you don't have any wires tapping voltage between any of the batteries of your current 9 volt battery bank, then it would have to be a 48V Dc-Dc converter.

Its possible it could be a different converter if there are wires leading to the chassis from between batteries. Otherwise the only wires between batteries would be the cables to connect the batteries into series.