You only need 2 12 volt batteries to get 24 volts. Join the negative post on one battery to the positive post on the other battery with a cable then connect the remaining positive and negative posts to the vehicle that has a 24 volt system.
wire it in series
Yes, if you put them in series.
Connect three 12 volt batteries in series and you will have 36 volts but will only have the amperage of one of the batteries.
That is Impossible. You can however make two 6 volt batteries into a 12 volt system by wiring the two 6 volts batteries in Series. You will then have an output voltage of 12 volts but the amperes will only be what one of the batteries have, In other words the volts will double but the amps will stay the same as if you only had 1 battery connected.
Connect three 12 volt batteries in series. You will triple the amperage but the volts will remain at 12. Click the link
Add two 1 volt batteries in series with it.
Two 24 volt batteries in parallel will give you 24 volts. The only other way is two 12 volt batteries in series.
Paralleling four sets of 6 volt batteries will still give you 6 volts. Two 6 volt batteries in series will give you 12 volts. Parallel these series sets will give you longer endurance at 12 volts. There is no way you will ever get 48 volts out of four 6 volt batteries.
If your cart has 4, 12 volt batteries in series to make up the 48 volts, just connect the 12 volt lights across one of the batteries.
You can only do that with a transformer. Or you can wire three 9 volt batteries in series to get 27 volts.
No, 12 volt batteries are 12 volts.
You do not need three 12 volt batteries to get 24 volts, all you need is two batteries. So I assume by using three batteries you want to increase the amperage. Wire two of the batteries in series and then wire the third battery to the second battery in parallel and you will have 24 bolts. Or you can just wire two 12 V batteries in series to get 24 V.