Two nine volt batteries connected in series put out a nominal 18 volts, which is more than enough potential. However, the current draw of the starter is a lot more than two tiny 9V batteries are capable of. There's a reason car batteries are so large, despite only putting out slightly more voltage than a 9V battery does.
how Can you charge multiple 12 volt batteries with a car?
There are 6 volt car batteries, but you are only likely to encounter them in really old cars, like late 50s early 60s.
DC definitely, all car batteries - all batteries.
The charger needs to be set to charge for the voltage that the battery is designed to produce. Most car batteries are 12 volt batteries.
Leisure batteries are two types of 12 volt batteries. It is a vehicle battery helping to start and move a car and other vehicles. It can also be found on electricity stoves.
Modern automobile batteries are 12 volts.
By connecting two 6 volt auto batteries in series. Or by connecting eight 1.5 volt batteries in series.
They are powered by a normal 12 volt car battery.
No, auto batteries are DC not AC.
To get 24 volts from two 12 volt batteries, hook the positive post from one battery to the negative post of the other.
it takes a 9 volt battery
depends on the voltage of the batteries.. four 12 volt car batteries would output 4x12 = 48 v