3. During 12-volt and high-voltage battery charging. __ (A) electrons flow out of the battery cells (B) the battery change electrical energy into chemical energy (C) the battery releases stored energy (D) All of the above. 4. Which of the following is not part of a basic battery cell? (A) Positive plate. (B) Negative plate. (C) Electrolyte. (D) Spark arrestors. 5. True or False? A battery helps provide electricity to a vehicle's instrum ntation and all electric circuits when its internal combustion engine is not running. 6. A 12-volt automotive battery that is fully charged has __ cells that produce an open circuit voltage of __ volts. (A) 6,12.6 (B) 8,12 (C) 12,12.6 (D) 24,18 7. When a 12-volt automotive battery is overcharged, __ gas can collect around the top of the battery and explode if exposed to a flame or spark. (A) neon (B) helium (C) argon (D) hydrogen 8. Electrolyte used in a 12-volt lead-acid battery is a mixture of sulfuric acid and __ (A) antifreeze (B) distilled water (C) hydraulic fluid (D) engine oil 9. True or False?Side terminals on a 12-volt automotive battery serve as male post connecti for female battery cable ends. 10. Which type of battery can be easily damaged b overcharging? (A) Glass mat battery. (B) Lead acid battery. (C) Gel battery. (D) Hybrid battery.

3. **(B) the battery changes electrical energy into chemical energy.** During charging, a battery acts as an electrochemical cell, converting electrical energy from the charging source into stored chemical energy.<br /><br />4. **(D) Spark arrestors.** Spark arrestors are safety devices used in internal combustion engines, not part of a battery cell. A battery cell consists of a positive plate, a negative plate, and an electrolyte.<br /><br />5. **True.** The battery provides power for accessories, lights, and the electrical system when the engine is off.<br /><br />6. **(A) 6, 12.6** A 12-volt lead-acid battery has six cells, each producing approximately 2.1 volts, for a total of 12.6 volts when fully charged.<br /><br />7. **(D) hydrogen** Overcharging a lead-acid battery can lead to the electrolysis of water in the electrolyte, producing hydrogen gas, which is flammable and explosive.<br /><br />8. **(B) distilled water** The electrolyte in a 12-volt lead-acid battery is a mixture of sulfuric acid and distilled water.<br /><br />9. **False.** Side terminals are typically female connectors that accept male terminals on battery cables. While some specialized applications might use male side terminals, they are not the standard.<br /><br />10. **(C) Gel battery.** Gel batteries are particularly susceptible to damage from overcharging. While overcharging is detrimental to most battery types, gel batteries are more sensitive and can be irreversibly damaged.<br />