1992 G9 lithium conversion planning - 36v to 48v

[Southern05]

Hi, new to golf carts and I love this forum - I've learned so much from reading here!
During covid, I picked up a 1992 Yamaha G9 36v electric that ran fine but had old lead acid batteries. So, I've since taken the cart apart down to the frame, cleaned off all the rust/corrosion and repainted anything metal. It's ready for a new battery setup and I'm figuring out what to use for a 48v lithium conversion.
Here's what I'm thinking:

• Alltrax SR-48300 controller (300 amp)
• SW180 solenoid (200 amp)
• Ecobattery 51v 72ah single LFP battery bundle (150amp continuous)
• Stock gray Yamaha/GE motor (77amp, 8000 max rpm)
• Stock tires and stock lift/suspension (for now)
• Stock f&r switch
• Minimal 12v accessories - adding lights and a radio

This cart will be used in a residential neighborhood (25mph max or less), with 2 adults and 2 primary-school aged kids. Mostly flat roads and up to 10% inclines and I don't mind charging up daily. We expect to drive 5-10 miles or less per day, mainly to the kid's school and back.

Anyone see problems with this setup meeting our needs?

[Maionaze]

How did your conversion turn out I'm thinking about doing the same thing not much info for Yamahas

[augiedoggy]

Originally Posted by Maionaze

How did your conversion turn out I'm thinking about doing the same thing not much info for Yamahas

what do you want to know? I converted my g8 twice... from 36v to 48 and then to 72-77v. you may find some info in my posts.
My cart is self charging with the solar roof so I dont use a plug in charger on it.

solenoid and resistor/diode need to be changed as well as the controller for 48v.. the motor is fine I used the stock motor for all 3 voltages with no issues. speed dramatically increased.

[Southern05]

Originally Posted by Maionaze

How did your conversion turn out I'm thinking about doing the same thing not much info for Yamahas

I actually haven't gotten around to it yet, but planning to buy some parts today before tariffs wipe out the prices. I'll reply here when I make some progress