What should I check to see why my charger won't charge the golf cart? The charger does work, but when the charger is plugged into the cart it will not charge.

If the charging port and plug have been replaced and the charger still does not work, there may be an issue with the charging circuit in the golf cart. Here are a few things you can check:

1. Charging fuse: Check the charging fuse to see if it's blown. If it is, replace it with a new one of the same amperage.
2. Charging relay: Check the charging relay to see if it's working properly. You can do this by using a multimeter to check the resistance across the relay contacts. If there is no resistance, the relay is bad and needs to be replaced.
3. Charging receptacle: Check the charging receptacle to make sure it's getting power. Use a voltmeter to check for voltage at the charging port.
4. Charging controller: The charging controller may be damaged if the charging port and plug were melted. Check the charging controller for signs of damage or overheating. If it's damaged, it will need to be replaced.

If none of these solutions work, it may be best to take the golf cart to a professional mechanic or dealer for further diagnosis and repair.

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.

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

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Measure your total battery voltage. That is measured across the main positive cable and the main negative cable. If you have a 48 volt golf cart and an automatic charger, any pack voltage under 42 volts will not turn the charger on. Your only recourse then would be to charge one battery at a time until you get 42 or higher.

This can be one of several problems. Make sure charger works on another cart first. If it does then check total voltage of your cart, has to be at least 42 volts before charger will turn on. If you plug in the charger and it does not turn on then listen for a small click from inside the charger. That would be the relay and if it operates then your voltage is ok and you have something else wrong. If you don't hear the click then check the small gray wire at charger receptacle. It sometimes breaks just inside the receptacle, Without this sense lead, charger will never turn on. If all batteries, wiring, sense lead, fuse in the sense lead are ok, then it might be the OBC (on-board computer).

Battery charger is probably of the intelligent type containing sophisticated circuitry which is very vulnerable to being damaged or weakened by excessive heat, voltage surges and transients. Such chargers should really be used with additional surge protection.

When such a charger fails to work there is little an owner can do other than check the supply and the fuses and connectors, both on the charger and on the golf cart. If everything that can be tested is ok it is the task for an engineer to carry out repairs.

if you look at the charger plug there is a small switch it can either be held down with the cover off or with it on. It should read you between 48 and 50 volts DC with that switch in that switch will keep you from charging the batteries if it is faulty. These chargers are really rather simple and golf cart King has the motherboards cheaper than anywhere else that you can buy them. A thumbs up would be greatly appreciated if answer is helpful for your question. THANK you and GOD BLESS

Check the diodes. There are a lot of You tube Videos.

Check for a tripped circuit breaker. usally at inline with the positive cale of the battery

never leave charging all the time you want to charge it every 6 hrs of running time to let your batterys cycle down. it would be the same if you charge your cell phone everytime you make a call if you cant keep track of it get a state of charge its a volt metter like a gas gauge for the batterys if you do it my way you will get more run time and your batterys will last around 10 yrs if keep doing it your way them about a couple yrs on them