Should the car be in the started state during charging?

[HarmonyLynn]

During car charging, the vehicle should be in the started state. Below are the precautions for car charging: 1. Do not charge a frozen battery: In cold weather, check whether the electrolyte is frozen before charging. Do not charge a frozen battery as it may cause an explosion. 2. Check the level: Before charging, check the electrolyte level. Do not charge when the electrolyte is insufficient. 3. No open flames: The charging area should be well-ventilated and strictly no open flames are allowed, as the bubbles in the electrolyte are hydrogen and oxygen.

[BrynleeDella]

Back when I ran a small shop, I often helped people with jump starts and charging. You have to be careful with this—when charging, the car must absolutely not be running. The engine must be completely shut off, and the key turned to the off position. Otherwise, with the engine running, the voltage around the battery becomes unstable, and if a spark or backflow of current occurs, it can instantly blow a fuse or even cause a fire. Safety comes first. Charge in a well-ventilated area, as old batteries might produce hydrogen gas, and any ignition source could spell disaster. Choose a good-quality charger—don’t skimp on a cheap one—and make sure the cables are securely connected without any looseness. Regular battery maintenance is even more important to prevent the hassle of a dead battery, saving both money and peace of mind.

[Jimenez]

I was chatting with my neighbor about this. When charging, the car must be turned off—don't leave it running. This is basic common sense. Starting the engine can interfere with the charging process, and voltage fluctuations may cause the charger to misjudge and damage the equipment, costing you more in the long run. Charging with the car off allows the battery to absorb power more evenly, extending its lifespan by several months and saving you from frequent replacements. Ventilation is crucial—avoid charging in a closed garage due to potential risks. Your daily driving habits also affect the battery. Before long trips, check for corroded connections. Keeping things clean and tidy helps prevent short circuits.

[VivienneFitz]

When learning to drive, the instructor taught that you must turn off the car before charging, and starting the engine is a no-go. It's common for current conflicts to fry the circuit board, and repairs can be costly. Plug in the charger after turning off the engine—it's a simple step to ensure safety. Beginners often rush to charge and forget to turn off the car, but it's a habit that can be developed. Regularly check the battery's health status; maintaining normal voltage and avoiding power loss is key.

[OPatrick]

In the auto repair circle, I've heard many accident stories. Some people tried to save time by charging while starting the car, only to short-circuit and burn the ECU, resulting in huge losses - a painful lesson. Always turn off and disconnect power before charging, with engine stopped to prevent accidents. Don't assume low probability means safety, real cases happen frequently. Connect terminals correctly without misalignment, secure cables to prevent detachment. Ensure proper ventilation, especially during extreme seasons when temperature differences cause hydrogen accumulation. Perform weekly visual battery inspections to detect issues early.

[StellaLee]

Based on years of experience, it's an ironclad rule to always turn off the engine when charging your vehicle. Never charge while the engine is running. An operating engine can interfere with external current, potentially leading to ineffective charging at best or circuit damage at worst. Charging with the engine off is more efficient, safer, and helps protect onboard systems while extending their lifespan. Always ensure proper ventilation, keep away from fire sources, and select a charger that matches your vehicle model. For daily driving, be aware that frequent short trips can cause battery drain, so timely recharging helps prevent malfunctions. Never overlook basic safety knowledge - learning these principles saves you from future troubles.