Most modern lithium batteries for golf carts have the BMS module inside the battery case when you buy the battery. The BMS DOES NOT need to be programmed by a computer - it's a circuit board that contains firmware (software permanently installed in chips on the board) and runs on its' own.
You will also have a controller that controls many functions of the cart like top speed, acceleration, etc. You do need a computer, special software and a cable to change any settings in controller. There are a few carts that may offer a built in method to change 1 or 2 parameters in the controller, but it will be limited.
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