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Can a Car Charge the Battery Without Moving?

3 Answers

VivianRose

09/04/25 7:32am

A car can charge the battery without moving, but the charging efficiency will be lower than when the vehicle is in motion. Here are the reasons why the charging effect is inferior to when driving: 1. Installed near the engine: The alternator is connected to the engine's crankshaft via a belt. 2. When the engine is running: The alternator also generates electricity as driven by the belt, and the output power of the alternator is directly proportional to its rotational speed. However, the alternator's speed is also proportional to the engine's speed. 3. Idle charging: To achieve slightly better results, electrical devices need to be turned off, and the engine speed should be increased. However, considering time costs, fuel costs, and vehicle maintenance, it is generally more economical to charge the battery while driving.

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Elaina

09/16/25 8:21am

My car sat unused for almost a month, and the battery drained completely, leaving it unable to start. I bought a portable charger online, connected it to the battery's positive and negative terminals, plugged it into a household outlet, and after charging overnight, it was fully restored. This method is extremely safe, with no worries about damaging the car, making it especially suitable for vehicles parked long-term. Remember to choose a charger with an auto-shutoff feature to avoid overcharging. Battery maintenance is also crucial—I regularly check the terminals for rust and maintain a consistent charging schedule to ensure the car is always ready to go. When parking, try to turn off electrical devices like headlights or the radio, as this can extend the battery's lifespan several times over and prevent breakdowns on the road.

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DeNova

10/31/25 2:08am

I've been driving for over 20 years, and it's perfectly normal for a car battery to discharge naturally when the vehicle is stationary. I recommend using an external charger connected directly to a power source, or jump-starting the car with a friend's vehicle, though jump-starting carries slightly higher risks of short circuits. During the charging process, always connect positive to positive and negative to negative terminals to ensure safety. Car batteries typically last two to three years, and monthly charging when the car isn't in use is ideal. Don't rely on idling to charge the battery - it's inefficient and wastes fuel. Buying a home charger is more cost-effective. Extra caution is needed with older cars - adding distilled water when the battery is dry or low on water can prevent complete failure.

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What are the differences between National 5 and National 6 emission standards for passenger cars?

The differences between National 5 and National 6 emission standards for passenger cars lie in their control levels, release dates, and issuing authorities. Here are the specific differences between National 5 and National 6 emission standards for passenger cars: Different control levels: The emission control level of National 5 standard is equivalent to the European Phase 5 emission standard currently in implementation. The National 6 standard for motor vehicle pollutant emissions is formulated to prevent environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health. Different release dates: The National 5 standard was released on September 17, 2013. The National 6 standard for motor vehicle pollutant emissions was released on June 22, 2018 (for heavy-duty diesel vehicles). Different issuing authorities: The National 5 standard was issued by the Ministry of Environmental Protection. The National 6 standard for motor vehicle pollutant emissions was jointly issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine.

How is speeding determined?

Determination of speeding is based on: Motor vehicles driving on the road must not exceed the speed indicated by speed limit signs or markings. On roads without speed limit signs or markings, motor vehicles must not exceed the following maximum driving speeds. Relevant information about speed limits is as follows: Introduction to speed limits: Speed limits typically refer to the regulation of driving speeds within a certain numerical range over a specified length of road. Purpose of speed limits: The main purpose is to pre-warn drivers to reasonably control their speed in subsequent sections of the road ahead, prevent the dangers of speeding, and ensure driving safety. Speed limits are an indispensable and most important part of road transportation safety.

How Many Years Until a Gasoline Pickup Truck is Scrapped?

In China, gasoline pickup trucks are required to be scrapped after 10 years, with a maximum limit of 15 years. Below is relevant information about mandatory vehicle scrapping: Reaching the service life: Reaching the stipulated scrapping service life. Failing to meet safety technical standards: After repair and adjustment, the vehicle still does not meet the national safety technical standards for in-use vehicles. Emissions or noise: After repair, adjustment, or adoption of control technology, the vehicle's atmospheric pollutant emissions or noise still do not meet national standards for in-use vehicles. Failing three consecutive inspection cycles: Failing to obtain the vehicle inspection qualification mark for three consecutive inspection cycles after the expiration of the inspection validity period.

What to Do If Too Much Antifreeze Is Added?

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Is ETC Required for Free Holiday Travel?

During highway toll-free periods, vehicles entering through ETC lanes and exiting through ETC lanes will not be charged. Similarly, vehicles entering through manual lanes and exiting through manual lanes will also not be charged. However, if a vehicle enters through a manual lane and attempts to exit through an ETC lane, the exit barrier will not lift due to the absence of entry vehicle information, preventing normal exit. In such cases, the vehicle must exit through a manual lane. The toll-free period is determined by the time the vehicle leaves the highway exit toll lane. For regular roads, it is based on the time the vehicle passes through the toll station lane. In other words, entering the highway during toll hours and exiting during free hours will not incur charges. Conversely, entering during free hours and exiting during toll hours will result in charges. ETC Usage Notes: The ETC transaction sensing range is 8 meters. When the vehicle in front stops, maintain a distance of over 10 meters to prevent accidental payment for the preceding vehicle, which might have a faulty or no ETC device. The ETC lane recognition speed is 20km/h. Exceeding this speed may prevent reading vehicle device information, leading to failed transactions. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag becomes loose or detached, will render the tag ineffective. It can be taken to the bank where the ETC card was issued or a highway service center for inspection. Non-deliberate detachment or loosening only requires reactivation. When using a debit card linked to ETC, insufficient balance may cause transaction failure. Follow on-site staff guidance to use manual MTC lanes with cash or card payment. Excessively thick car windshields may cause poor signal reception. This is particularly relevant for vehicles that have had windshields replaced after accidents or those with modified front windshields.

How is the car body considered to have swept the line in reverse parking?

Body sweeping the line means the car body crosses the line, which results in a 100-point deduction and failure of the current test. Other actions that also incur a 100-point deduction include the vehicle crossing the line, not entering the parking space completely, stopping midway, not following the prescribed route or sequence, and exceeding the time limit. The total score for the two subjects is 100 points, with evaluation criteria set for failure, 20-point deduction, 10-point deduction, and 5-point deduction. The rules for the second subject of the motor vehicle driving license test state that any mid-test stop, rolling back, or not following the voice prompts will result in failure. Additionally, the wheels or body touching the line will also lead to failure. Many learners encounter line-touching issues during the second subject study, with 'touching the line' being the most common mistake leading to failure. The primary reason for wheel line-touching is the learner's failure to master the correct timing for steering. Besides missing the right moment to steer, another reason could be the steering speed not keeping up with the vehicle speed. Second subject deduction standards: Not wearing a seatbelt: 100-point deduction. Starting the engine without the gear in neutral: 100-point deduction. Not using the turn signal (including starting, changing lanes, overtaking, turning, and parking); using the turn signal for less than three seconds (this is easily overlooked!); forgetting to turn off the turn signal or using it incorrectly: 10-point deduction. Stalling once: 10-point deduction. Reverse parking: Not following the prescribed route sequence: 100-point deduction. Body crossing the line: 100-point deduction. Not completing the parking: 100-point deduction. Before reversing, if both front wheels do not pass the control line: 100-point deduction. Exceeding the 210-second time limit: 100-point deduction. Stopping for more than 2 seconds: 5-point deduction each time. Slope fixed-point parking and starting: After stopping, if the front bumper is not aligned with the pole line and exceeds 50 cm forward or backward: 100-point deduction. If not aligned but within 50 cm: 10-point deduction. Exceeding 30 seconds to start after stopping: 100-point deduction. Wheels touching the road edge line while driving: 100-point deduction. Rolling back more than 30 cm when starting: 100-point deduction. After stopping, if the body is more than 50 cm from the road edge line: 100-point deduction. Not tightening the parking brake after stopping: 10-point deduction per time. If the body is more than 30 cm but within 50 cm from the road edge line: 10-point deduction per time. Rolling back more than 10 cm but less than 30 cm when starting: 5-point deduction per time. Parallel parking: After parking, if the body crosses the line: 100-point deduction. Not using or incorrectly using the turn signal when parking: 10-point deduction. Exceeding the 90-second time limit: 100-point deduction. Touching the parking space edge line while driving: 10-point deduction per time. Wheels touching the lane edge line while driving: 10-point deduction per time. Stopping for more than 2 seconds: 5-point deduction per time. 90-degree turn: Wheels touching the road edge line: 100-point deduction. Not using or incorrectly using the turn signal during the turn, or not turning it off after the turn: 10-point deduction. Stopping for more than 2 seconds: 5-point deduction per time. Curve driving: Wheels touching the road edge line: 100-point deduction. Stopping for more than 2 seconds: 100-point deduction. Not driving in second gear or above: 5-point deduction.

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