Is a lead calcium battery same as lead acid battery?

Generally, yes, they are the same. The term "lead storage battery" is a bit incorrect, but it conveys the idea that the battery in question is a lead-acid storage battery. These storage batteries are...

It depends. **********Lead-calcium alloy is the standard alloy for electrodes in lead-acid batteries. It is one of the few alloys involving reactive metals (a group which also includes sodium,...

They have lead plates. When they wear out is when you replace the battery.

It is a battery which, as you may have guessed, used lead and an acid to store an electrical charge. Most car/truck batteries are of this type.