Charging or over-charging
Either the charging system has failed or the battery is bad.
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Golf Cart batteries for electric cars are rated in minutes, voltage, and amps. They are tested with a discharge machine and hydrometer. You can use your meter on the charger to kind of guess: If the charger (on a 36 volt system) comes on and the needle goes to 18-20 - that's good. After a few (3-5) minutes it should start to slowly drop back down to 15-16 amps - that's still good. After about 10-15 minutes it should be below 10 amps - still good. After 30 minutes it should be at 2 amps - and that is a good set! If the charger comes on and only goes to 16 amps or less that is not good. If the charger comes on and goes to 18-20 amps and stays there for an hour that's not too good. If the amps drop back to 2 amps within an hour that's better. If the charger stays at 18-20 amps for two hours then that's is normally bad. If the charger stays at 16-20 amps for more then 3 hours then you got some junk batteries. Golf Cart batteries for a gas car are rated in cold cranking amps, and volts. They are tested just like a car battery.
You will have to change the cart motor to one that operates on 48 volts DC and then add one more 12 volt battery (identical to the exsisting) in series with the batteries that are in the cart now.
If your golf cart is 36 volts it is probably three 12 volt batteries in series. To pick off 12 volts from the carts power source using one of the 12 volt batteries. Make sure the polarity is correct to the phone charger. If the charging unit is like the ones used in vehicles the center pin is the positive point.
Yes, just about all of them have an automatic shut off for the charging system so they do not overcharge. It's a good idea to exercise the batteries regularly though.
In a horse-cart system, there are typically three main forces acting on the system: the force of the horse pulling the cart forward, the force of friction between the wheels and the ground resisting motion, and the force of gravity acting downwards on the horse and cart.
Not being sure of your golf cart voltage, I will give it a try. Count the caps on on batteries, each cap is two volts, so if you have three caps per battery, you have a 6 volt battery. Now count the batteries and multiply by battery voltage, 6 batteries times 6 volts equals a 36 volt system, and so on. You may only charge 12 at time with your charger, so you will have to remove a few battery to battery cables. The cables start with a positive post go to the main system of the cart, with it's neg post connected to the pos. post of the next battery in line, a so on until the last battery in line neg. post goes to the main system of the cart, making a full circle. You must separate the batteries in to 12 volt groups with the main system cables discounted from the main system to prevent damage to it. Remove the neg. cable first, and install it last, safety thing. Need more help contact me through my board and I will try to help.
No, you cannot use three 12 volt batteries to replace 6 volt batteries in an EZGO golf cart. The golf cart's electrical system is designed to operate on a specific voltage, either 36 or 48 volts. Using three 12 volt batteries would not provide the correct voltage and could potentially damage the cart's components. It's best to use the recommended voltage of batteries for your specific model of golf cart.
It would take 3 batteries of 12 volts each to get 36 volts. You would connect the negative pole to the positive pole. Then you would have 36 volts. Make sure you connect positive to positive and negative to negative on your golf cart. Otherwise, you can ruin everything.
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