What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?
The correct answer is D: The solar panel must have a charge controller. A precaution that should be taken when connecting a solar panel to a lithium iron phosphate battery is that the solar panel must have a charge controller. Lithium batteries require precise charging control to prevent overcharging, which can be dangerous. For amateur radio operators, this is a critical safety requirement. Understanding this helps when using lithium batteries with solar panels.
Exam Tip
Lithium battery with solar = must have charge controller. Think 'L'ithium 'B'attery = 'L'ithium 'B'attery needs 'C'ontroller. Lithium batteries require precise charging control to prevent overcharging. Not grounding, not terminal orientation, not resistor - just charge controller.
Memory Aid
"Lithium battery with solar = must have charge controller. Think 'L'ithium 'B'attery = 'L'ithium 'B'attery needs 'C'ontroller. Lithium batteries require precise charging control to prevent overcharging. Critical safety requirement."
Real-World Application
You connect a solar panel to a lithium iron phosphate battery. You must use a charge controller designed for lithium batteries. The controller monitors battery voltage and current, preventing overcharging that could damage the battery or cause a fire. Charge controllers are essential for lithium battery safety.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Grounding the solar panel framework isn't the specific requirement - the requirement is a charge controller. Grounding is good practice but not the specific precaution.
Option B: Incorrect. Battery terminal orientation isn't the requirement - the requirement is a charge controller. Terminal orientation doesn't matter for this precaution.
Option C: Incorrect. A series resistor isn't the requirement - a charge controller is needed, not just a resistor. Resistors don't provide proper charging control.
题目解析
The correct answer is D: The solar panel must have a charge controller. A precaution that should be taken when connecting a solar panel to a lithium iron phosphate battery is that the solar panel must have a charge controller. Lithium batteries require precise charging control to prevent overcharging, which can be dangerous. For amateur radio operators, this is a critical safety requirement. Understanding this helps when using lithium batteries with solar panels.
考试技巧
Lithium battery with solar = must have charge controller. Think 'L'ithium 'B'attery = 'L'ithium 'B'attery needs 'C'ontroller. Lithium batteries require precise charging control to prevent overcharging. Not grounding, not terminal orientation, not resistor - just charge controller.
记忆口诀
Lithium battery with solar = must have charge controller. Think 'L'ithium 'B'attery = 'L'ithium 'B'attery needs 'C'ontroller. Lithium batteries require precise charging control to prevent overcharging. Critical safety requirement.
实际应用示例
You connect a solar panel to a lithium iron phosphate battery. You must use a charge controller designed for lithium batteries. The controller monitors battery voltage and current, preventing overcharging that could damage the battery or cause a fire. Charge controllers are essential for lithium battery safety.
错误选项分析
Option A: Incorrect. Grounding the solar panel framework isn't the specific requirement - the requirement is a charge controller. Grounding is good practice but not the specific precaution. Option B: Incorrect. Battery terminal orientation isn't the requirement - the requirement is a charge controller. Terminal orientation doesn't matter for this precaution. Option C: Incorrect. A series resistor isn't the requirement - a charge controller is needed, not just a resistor. Resistors don't provide proper charging control.
知识点
Lithium iron phosphate battery, Charge controller, Solar panel, Battery safety
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.