The number of batteries needed to power a robot will depend on the design of the specific robot.
2 BA batteries are required to power TA-312 Phone
6D batteries are needed.
At present mostly (lead-acid) batteries are used as a power source. Many different types of batteries can be used as a power source for robots. They range from lead acid batteries which are safe and have relatively long shelf lives but are rather heavy to silver cadmium batteries that are much smaller in volume and are currently much more expensive. Designing a battery powered robot needs to take into account factors such as safety, cycle lifetime and weight. Generators, often some type of internal combustion engine, can also be used. However, such designs are often mechanically complex and need fuel, require heat dissipation and are relatively heavy. A tether connecting the robot to a power supply would remove the power supply.
AAA batteries have a variety of uses in many objects found in the average home. It is always a good idea to purchase AAA batteries in bulk because they are so often needed. A good supply of them should always be kept on hand in the case of power outages. They can be used to power radios, cameras, and even some specially designed kitchen appliances.
To answer this question as it stands the voltage of the batteries is needed and the rated voltage of the bulb.
I know of no vehicle that is powered by double A batteries, so the question is mute.
It depends on the load and desired voltage. The voltage adds as you put batteries in series. Positive to negative, etc.
Many batteries are 12 volt (all batteries are DC) The size you need depends on how much power and duration is needed You can even use a car battery, but be careful handling it so you don't create a mess
You cannot power a home with car batteries. Batteries are DC voltage. Your home operates on AC voltage. You could use a converter but the number of batteries required to operate an average home would be enormous.
There are many uses for Power Sonic batteries. If you are going to be using a tremendous number of batteries at some point, you typically want the best quality ones that you can get. This will reduce the amount of batteries that you need to purchase, since some last longer than others.