My cart has 6 8volt batteries that are dead my manual shows 4 12 volt batteries should I replace the 6 8 volt with 4 12 volt batteries

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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It may need a repair

You load tested each battery? Can't be bad if cart runs good.

Troubleshooting a golf cart - APLawrence.com

aplawrence.com > Miscellaneous

Mar 29, 2015 - If you need help with a golf cart, I suggest asking at Buggies Unlimited. .... Within a half hour I had everything in place, cinched down, connected and ready. ...it is still getting power to the forward and reverse other words itsworking and ... I let mybatteries completely drain and now the charger won't turn on, ...

Put Spring In Your Electric Golf Cart ' Golf Cart Talk Blog

https://www.golfcarcatalog.com/golf-cart.../put-spring-in-your-electric-g...

Mar 9, 2004 - On a car with 8-volt batteries, connect a 12-volt charger to each individual ... If you do not have a 'Regen' system, then just put the Forward/Reverse(F/R) switch into the .... speed controller stays dormant and will not permit the car tomove. ..... My other question would be did anything "fail" in the cart prior to ...

About Golf Cart Battery Chargers ' Golf Cart Talk Blog

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

Apr 1, 2012 - Tutorial on golf cart battery chargers, the basics, what goes wrong, ...BATTERIES ARE DEAD AND CHARGER WON'T COME ON ... This is usually indicated by a car that creeps when the brake is off and the car is in forward orreverse. ... a connected pair of batteries with a 12 volt, auto style battery charger.

Basic EZGO Golf Cart Problems And How To Fix

sounds like you have either a relay or computer that is bad, needs to be serviced

36 volt golf cart controller

http://www.cunninghamgolfcar.com/s-101-free-resources.aspx

have the batteries individually load tested as I suspect that there are dead cells in one or more.

The E100 is a Kick Start scooter, the Rear Wheel has to be Spun for it to start. This scooter will not start from a motionless position.

Could be the battery.
Put the Scooter on a block so the rear tire is raised. Remove the standing plate to reveal the battery compartment.
Charge the Unit completely

1. Using a multimeter measure the voltage across the batteries. If the voltage is below 20 volts batteries are dead - Replace batteries.
2. Now for a running test. Turn the throttle and spin the rear tire to preform a kick start. Still measuring the voltage. If the voltage is Below 20 volts or if the voltage drops quickly batteries are dead - Replace batteries.
3. If the voltage is remaining around 24 volts for a long period - then you could have connector problems, clean and tighten all connectors.
I use a fiberglass electronic cleaning brush, as contact cleaners leave residue that interfere with electrical connections.

See my other posts for E100

Yes to both questions. the charger must sense 41.5 volts to activate the relay inside the charger. Being a repair shop, I have a charger that is rigged to charge even DEAD batteries. I do not recommend this for the novice. A charger set on 12 volts will bring the batteries back up to 8.2-8.6 volts. A cheap trickle charger may not put out enough to charge a battery of this size. Remember that they are used to MAINTAIN a charge. Connect the Voltmeter and watch for voltage rise. If it rises to 8.1 or above, it is charging. Trojan battery company recommends charging at least once a month.

Sams club $77 each