Connect them in series and you will have 24 volts but you will have the same A/H as one of the batteries. Volts double but A/H stay the same.
You will have 24 volts DC.
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.
Actually A "12" volt battery produces 12 to 14 volts at almost any charge %, even though your guage showes the charge in volts, Its actually amperes that get reduced in batterys.,,,,,,,, 80% should be sufficient charge to start A vehicle that is in good condition.
12 volt standard, 24 volt optional.
It is 12 volts.
Yes you can. Make sure the batterys are hooked together in SERIES and not parallel !!! Be sure the batterys have the correct amount of fluid in each cell to prevent "cooking " a cell.yes - the batteries must be connected together on series and the charger must be connected to one batterys pos. terminal and the other batterys neg. terminal
Install a 3 volt battery and forget any modifications. It will not operate on 12 volts.
Sure you can and you will end up with 36 volts. Connect them in Parallel and you will have 12 volts.
12 volts is less of power than 18 volts drill
wire it in series
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.
12 Volts DC