Since the voltage is the same, I would expect that not much charge would be transferred. Normally, for a 24 V battery, you would need a HIGHER voltage to charge it.
No
No
No
The general public can buy a Bosch 24V battery in many electronic shops. For example, Bestbuy sell the Bosch 24V battery for a very low price. There are many other shops and web-shops that sell them.
yes, only if you have 2 12v batteries ran in a series(24v)
No, you need a 36 volt charger.
No it cannot.
A Makita 24V battery can be bought from Amazon, or purchased from a factory outlet store. Nearby factory outlet stores can be found online or in a phone book.
You can do anything, but is it safe or proper. No The 24 V will eventually overcharge the battery after a while and start damaging it. (A flammable gas is produces and the battery could explode.)
No, you need a 24 volt charger.
Wire the batteries in "series". Place jumper from neg (-) terminal to the pos (+) terminal on the other battery. You will have 24V across the remaining terminals.
It can't. You home runs on 120 volts AC not DC power from a battery.