Well unless you mistyped something 500kva is 500,000 watts. That would be 41,666 12 volt batteries!
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.
To answer this question a voltage must be given.
The number of batteries needed to power a robot will depend on the design of the specific robot.
Yes, even a potato can light a light bulb. Yes. If the batteries match the voltage of the bulb, they can light it. Flashlights have bulbs and batteries that power them. If you mean a household light bulb, then you'd need many batteries in series (80 of the 1.5 volt batteries).
2 BA batteries are required to power TA-312 Phone
2,000 batteries
500 KVA how many amps? almost 650 Amps according to formula.
I know of no vehicle that is powered by double A batteries, so the question is mute.
2
There are many places where one could purchase truck batteries. The best places where one could purchase truck batteries that places like Auto Zone or Amazon.
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.
If you live in a climate that has a lot of sun throughout the year and have an area free from shade solar batteries can power many things. If you have enough of them, they could even power everything in your house. The big downside is the cost. On a smaller scale, you can get solar chargers for your cell phones and iPods which allow you more time on the road without plugging in.