technician a says that battery charging voltage should never exceed 16 volts. technician b says that a battery can be considered fully charged when its open circuit voltage exceeds 12.1 after it has been stabilized. who is correct?

Technician a is correct.Why should the battery charging voltage never exceed 16 volts?The 12v adapter can only raise the battery voltage to 12v, but to fully charge a car battery, the voltage must be raised to 13.8v. The 16-volt adapter would increase the voltage too much, potentially causing damage. A 4 A maximum current would be fine and would not cause any harm, but a 13.8 V source is required. Batteries like NiCd require an accurate constant current to charge; lead acid batteries (e.g., car batteries) require an accurate constant voltage to charge.When can the battery be considered fully charged?A voltage of 12.7 volts or higher indicates that the battery is fully charged. A voltage reading of 12.4 volts indicates that the battery is only about 75% charged. A meter reading of 12.2 volts or 12.0 volts indicates a charge rate of 50% or 25%, respectively. Any readings less than 11.9 volts indicate a fully discharged battery, and the storage device may have been damaged. Voltage readings of 10.5 volts or less indicate that the battery is severely damaged and must be replaced.Thus, the technician a is correct that the battery charging voltage should never exceed 16 volts.To learn more about batteries and their important terms, visit: https://brainly.com/question/14883923.#SPJ4