Sort of: you would need about 80 motorcycle batteries 10 to 20 Car batteries Or six to 8 of the correct golf cart batteries.
no
no, but they can be rebuilt.
Anecdotal opinion says golf cart batteries will last three years under normal, everyday, use.
no you can also use gas it just depends on type it uses.
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.
Yes they will work, golf cart battery have a few more plates in them for longer run time.
Spare golf cart batteries can be bought from a number of specialist golf hardware providers both online and in a specialist golf store. You can also purchase them from specific golf cart dealers.
Golf cart batteries can be purchased in your local area at designated retailers, ordered from the manufacturer by telephone, or purchased online at one of the dozens of online retailers who carry your specific Golf Cart Battery brand.
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I would not recommend trying to save your old 6V Batteries. Attempting to save old golf cart batteries can be dangerous. If your old batteries have "swelled" or gotten enlarged where the battery is bulging out, it is time for replacement. There is a chemical solution that can be added to the old batteries to give them some more life, but it will NOT last long. In fact, I would gamble to say that they would probably fail within 3 months. Really not worth the hassle of purchasing the chemical, charging all the batteries only to have them quit on you. I too am looking for 6V Deep cycle batteries and I have found "they ain't cheap!" I would recommend saving your money and purchase a high end golf cart batteries and get the 5-7 years of use out of them. Anything else would be like putting a band-aid on a bullet wound. You can expect to pay anywhere from $90-$225 for each 6V battery, depending on the brand. Trojan Batteries being some of the best out there.
Golf cart chargers are automatic and will shut off when the batteries are fully charged. Just connect the charger and forget it.