Why doesn't my yamaha golf cart charge the battery?

It depends on the model, but they are usually wires in series to give 48 volts to the motors, so plus to minus on each them.

Cart positive lead to batt 1 + the - to batt 2 + to batt 3 - to Batt 4 + and the minus - of batt 4 to the cart.

Videos

https://www.google.com/search?q=how+to+connect+4+12+volt+batteries+to+Yamaha+golf+cart

You could also search make model manual

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Ok, first I hope u are putting distilled water in the battery, not just any water. Should not overfill it either. Looks like the electrolite ( sulfuric acid) in your golf cart had been diluted to the point where it doesn’t hold a charge. Also when u wipe all that stuff around the battery please wear gloves and safety goggles. Looks like u might need a new battery for your cart. Good luck!

Make sure the batteries are fully charged. if your cart has it's own charger it may not fully charge. I would purchase a portable one and make sure they fully charge then you would know whether the cart charger is working.

Does the cart move? If you still have good battery power then I would the battery meter. Otherwise you might have a low or bad battery. Need to check each battery under load.

Charger won't shut off - Buggies Gone Wild Golf Cart Forum

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Sep 27, 2010 - 7 posts - ‎2 authors
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About Golf Cart Battery Chargers - Golf Cart TalkGolf Cart Talk

www.golfcarcatalog.com/golf-cart-blog/about-golf-cart-battery-chargers/

Right here:
http://www.vintagegolfcartparts.com/yamaha-wiring-diagrams

did you leave the key on and kill the battery or a light or something double ck that battery , they will still light up the ignition and lights and ll but does not have enough to crank the starter , that is what is sounds like to me be put a jump on it or charge it and try again , when you turn on the ignition does the lights light up on the dash panal if so the batter is low