Can the car battery be charged at idle speed?

1 Answers
AlexanderDella
07/30/25 10:20am
Can the car battery be charged at idle speed? The car battery can be charged at idle speed, but the charging effect is not good. After the engine starts, the electricity generated by the alternator is mainly used to power the vehicle itself, leaving little remaining current. It is only when the engine speed exceeds 2000 RPM that the current becomes sufficient. Therefore, it is not recommended to charge the battery at idle speed. The car battery is charged by the alternator while the vehicle is running, so there is rarely a need for dedicated charging. However, if the battery is severely drained due to an unexpected situation, it should be charged promptly and not solely rely on the car's own charging system. Generally, after the car engine is turned off, the switches of related equipment inside the car should be turned off in time to prevent severe battery drain.
Was this review help?
6
5
Share
More Forum Discussions

What are the differences between Golf and Polo?

Introduction to the differences between Golf and Polo: 1. Different engine configurations: The GOLF comes with 1.6L and 1.4T engines. Additionally, if the GTI is considered part of the GOLF lineup, the GOLF also offers a 2.0T engine, while the POLO is equipped with 1.4L and 1.6L engines. 2. Different transmissions: The GOLF's automatic transmission is a DSG, whereas the POLO's automatic transmission is an Aisin 6AT. 3. Different rear suspensions: The GOLF features a four-link independent suspension, while the POLO has a semi-independent suspension. 4. Different dimensions: The GOLF has a length of 4275mm and a wheelbase of 2631mm, whereas the POLO measures 3970mm in length with a wheelbase of 2470mm.
13
2
Share

What is the difference between C1D and C1E?

The most obvious difference between C1D and C1E lies in the permitted vehicle types. D driving license: Permitted vehicle types include ordinary three-wheeled motorcycles, with additional permitted types including E and F. E driving license: Permitted vehicle types include ordinary two-wheeled motorcycles, with additional permitted types including F. In comparison, C1D allows for more vehicle types. Driving license categories: Motor vehicle driving licenses are divided into 16 categories: A1, A2, A3, B1, B2, C1, C2, C3, C4, C5, D, E, F, M, N, P. Driving license validity period: Article 56 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses": If a motor vehicle driver does not accumulate 12 penalty points in any scoring cycle during the six-year validity period of the motor vehicle driving license, the license will be renewed with a ten-year validity period; if the driver does not accumulate 12 penalty points in any scoring cycle during the ten-year validity period, the license will be renewed with a long-term validity period.
11
0
Share

How many liters does a full CX5 fuel tank hold?

56 liters. The Mazda CX5 has a fuel tank capacity of 56 liters, and it can still run about 50KM when the fuel gauge shows empty. Fuel tanks can be divided into two types: open fuel tanks and closed fuel tanks. Here are the relevant introductions about fuel tanks: 1. Open fuel tank: In an open fuel tank, the liquid level is connected to the atmosphere, and an air filter is installed on the fuel tank cap. Open fuel tanks have a simple structure and are easy to install and maintain, making them commonly used in hydraulic systems. 2. Closed fuel tank: Closed fuel tanks are generally used for pressurized fuel tanks, filled with a certain pressure of inert gas, with the inflation pressure reaching up to 0.05MPa.
15
3
Share

Does Engine Oil Decrease with Use?

Engine oil does decrease with use, for the following reasons: 1. Normal lubrication loss: During each lubrication cycle, a small amount of oil in the gaps will enter the combustion chamber, leading to a gradual decrease in oil volume. 2. Oil evaporation: Due to heat, engine oil can evaporate, resulting in a reduction over time. 3. Sealing issues: Oil may leak through gaps, causing it to diminish with use.
4
1
Share

What is the reason why the gl8es electric door cannot open automatically?

gl8es electric door cannot open automatically due to controller failure. The Buick gl8 electric door can be closed in four ways: by pressing the close button on the main driver's seat, pressing the close button on the car key, pulling the door handle from the outside, or pressing the side button on the main driver's seat. The following are the specific details of the Buick gl8: 1. Positioning model: The Buick gl8 is a mid-to-high-end MPV launched by SAIC-GM Buick. 2. Power: This car is equipped with a 2.0T SIDI direct-injection turbocharged engine, with a maximum power of 191kw and a maximum torque of 350 Nm. In terms of the transmission system, the engine is matched with a 6-speed automatic transmission. During operation, the engine can output the maximum power when the speed reaches 5400 rpm, and the maximum torque when the speed reaches 2000-5000 rpm.
20
0
Share

Why is the steering of a large truck unstable and difficult to control?

The causes of steering wheel shaking or wobbling include the destruction of the dynamic balance of the front wheel assembly due to tire patching or repair, loose parts in the drive shaft assembly, destruction of the dynamic balance of the drive shaft assembly, failure of the shock absorber, inconsistent stiffness of the leaf springs, wear and looseness of steering system components, and improper front wheel alignment. Below is more related information: 1. Always pay attention to abnormal noises in the vehicle: While driving, the driver should closely monitor the sounds from various parts of the vehicle. Once an abnormal noise is detected, the first step is to accurately determine whether the sound is coming from inside or outside the vehicle. If it is confirmed to be from inside the vehicle, it may not be a big issue; if it is from outside, the vehicle should be stopped for inspection. 2. Learn to read the faults on the dashboard: For novice drivers, learning to read the dashboard is very important. Pay frequent attention to the pointers on the dashboard and the icons displayed. Whenever a red light appears on the dashboard, stop the vehicle and turn off the engine for inspection as soon as possible.
20
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.