Car Bomb
Probably not much because 6 Volts is not enough to power a 12 Volt coil
No, it will overcharge the 6 volt battery.
If you are talking about a 6 volt coil, yes, so long as the contacts are rated for the 230 volt circuit. If you are talking about 6 volt contacts, no, absolutely not.
Depends on the amperage of the batteries you are using. Both setups will give you 36 volts, but you will normally have a longer run time with six 6 volt batteries in series than three 12 volt batteries. That is why golf carts use 6 volt instead of 12 volt batteries.
USE INVERTER USE INVERTER USE INVERTER
No, not unless you installed a 6 volt battery instead of a 12 volt battery.
No it will not work
Nope.
can 6 ,12 volt battery be wire to make in to one 24 volt battery for solar use in home
Yes, it simply has less capacity.
12Volts
You cannot use a 12 volt charger to charge 2.6 volt batteries. The 2.6 volt batteries will become hot, very quickly, and explode.