no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
A 3 volt motor will burn with a 9 volt battery. Not recommended.
A 9 volt battery charger is designed to charge 9 volt batteries.The answer to the Related Question explains how any battery charger works.
6 quadruple a batteries its on youtube if you search 9 volt battery hack
No, the battery will be overcharged and battery damage will occur if it is done.
it operates a battery,mostly a 9 volt battery
No, a lead acid battery is a wet cell battery and a 9 volt alkaline battery is a dry cell battery.
It heats up very hot and may explode.
buy a battery charger