In the early years,before plastics,car battery cases were made of glass or other brittle material.When you placed these batteries on concrete,(or any hard surface)you were likely to cause a small crack(sometimes invisible to the naked eye),in the case allowing the battery acid to leak.Once the plates inside the battery are exposed to air for any length of time,the capacity to hold a charge was greatly reduced and can cause one or more of the six cells(12v) to stop working.Always keep the cells at the correct level.Concrete itself does not discharge a battery!
However,even a new or good battery will go bad no matter what surface it is stored on if you don't charge it every month or so.You could place it on a stack of $100 bills and it will go bad if it is not kept charged.
Anyway,that is how the tall tale got started,enjoy!
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battery's?
Leaving a battery sitting on a cement floor will have no effect whatsoever. It will not discharge the battery anymore than letting it sit in the car or on a wooden floor. That is a myth. Just put a charger on it and charge it. If it does not take a charge it is defective, but sitting on concrete did not cause it to go bad.
A car battery's function is to store electrical energy for your vehicle. When you start the car the stored energy in the battery turns your car over and once your car starts the alternater will power everything and recharge the battery.
In the battery pack
With the battery(s) and capacitors.
With a hydrometer which you can buy at any auto parts store.
You can tell a car's battery type by contacting a store that sells car batteries. You will need to give them the make and model of the car. They will let you know.
When the battery does not start your car as it normally has, or the battery runs down overnight. If you suspect it is bad then have it checked at an auto parts store.
A Car Battery. In every store that sells batteries there is a book that lists the specific battery for the vehicle. Have a store worker help you.
Dead cell in the battery or something is on pulling power from the battery. Have the battery tested at any auto parts store.
There are a number of places where one can purchase a battery charger for their solar car. Any good battery store will sell them. You can also purchase them online from sites such as eBay, Car Battery Chargers Central and Battery Stuff.