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2. Automotive battery - Wikipedia

   en.wikipedia.org/wiki/Automotive_battery

   A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.

3. Lead–acid battery - Wikipedia

   en.wikipedia.org/wiki/Lead–acid_battery

   Consider a battery that has been completely discharged (such as occurs when leaving the car lights on overnight, a current draw of about 6 amps). If it then is given a fast charge for only a few minutes, the battery plates charge only near the interface between the plates and the electrolyte.

4. 5 Things to Know About Your Car Battery - AOL

   www.aol.com/finance/5-things-know-car-battery...

   Like all automotive parts, car batteries will eventually wear out and need to be replaced: A fully charged battery should read 12.6 volts or higher; if the reading is below 12.4 volts, your ...

5. Automobile auxiliary power outlet - Wikipedia

   en.wikipedia.org/wiki/Automobile_auxiliary_power...

   The actual voltage, matching the car battery's voltage, will be approximately 12.5 volts when dormant (less in cold conditions), approximately 14.5 volts when the engine and the alternator/generator are operating (more when cold), and may briefly drop as low as 5–6 volts during engine start due to the high temporary battery current usage. [12]

6. Peukert's law - Wikipedia

   en.wikipedia.org/wiki/Peukert's_law

   Peukert's law brings a certain degree of fire-safety to many battery designs. It limits the maximum output power of the battery. For example, starting a car is safe even if the lead–acid battery dies. The primary fire hazard with lead–acid batteries occurs during over-charging when hydrogen gas is produced.

7. State of charge - Wikipedia

   en.wikipedia.org/wiki/State_of_charge

   In a battery electric vehicle (BEV), the state of charge indicates the remaining energy in the battery pack. [4] It is the equivalent of a fuel gauge.. The state of charge can help to reduce electrical car's owners' anxiety when they are waiting in the line or stay at home since it will reflect the progress of charging and let owners know when it will be ready. [5]