It is a 12 volt battery. Fully charged it will read 12.6 volts with a digital volt meter.
Voltage is the same but amp hour capacity of the car battery is much higher.
That all depends on the size of the battery, it's storage capacity.
A car battery does not need a capacitor as it's regulating capacity (when in good condition) is well above any capacitor you can fit into your car.
Like any type of battery, an electric car batteryhas limited capacity, which means that it can only store a certain amount of electrical energy. How long the battery lasts in your electric car depends on its capacity and how it is used. On average, a fully charged battery in an electric car will last between 150 and 300 miles. You can recharge the battery with a plug in the wall, so you don't have to worry about electric car battery cost every time it runs out. Electric car battery technology is constantly advancing, and in the future there are expected to be electric cars that can last even longer between charges.
Yes...it will not have the same capacity afterwards. Yes. Everytime you run an auto battery down completely you shorten the life of the battery. It is not designed to be run flat as a deep cell battery is.
There are four things to consider when buying a car battery: Cold Cranking Amps (CCA), Reserve Capacity, Group Size, and Low vs. Maintenance Free.
It usually means you have a "Dead battery". You will need to replace your battery or find a way to put a lot of power into it to get it started again. Some trickle car battery chargers have the ability to put that amount of amperage out, but you will have to make sure your charger and/or battery have the capacity.
You can do a load test on a battery and compare it to the reserve capacity and cold cranking amps. If it is lower then the ratings then the battery is going bad. Keep in mind that the battery must be charged to its maximum capacity to have an accurate test. Trickle charge on 2 to 6 amps for approx. 6 hours then test battery
Reserve Capacity. The number of minutes a battery can maintain a useful voltage under a 25 amp discharge. Reserve capacity is often a truer test of battery life than amp hours.
mAh is short for milli ampere hours. It's a measure of the capacity of the battery. Comparable to the size of the fuel tank of a car. So a 6500 mAh battery is almost ten times the size of a 700 mAh battery.
That will depend on the capacity of the battery and the amount of electrical loads. could be 15 minutes or a couple of hours.
For a 70Ah battery, the volume from one example is 5.6litres A 60Ah one had 4.1Litres Obviously this will vary dependent on capacity and manufacturer