How Long Can a Battery Last After Disconnecting the Negative Terminal?

1 Answers
LeilaniDella
07/29/25 5:33pm
After disconnecting the negative terminal, a battery can last for 1 to 2 months. Disconnecting the negative terminal only cuts off the standby power consumption of other components in the vehicle, but the battery still undergoes natural discharge, albeit at a slower rate. If left disconnected for too long, the battery may become depleted. The battery is a crucial component in a car, responsible for powering all electronic devices when the engine is not running. Also known as a storage battery, it operates by converting chemical energy into electrical energy. The commonly referred-to car battery is typically a lead-acid battery. Car batteries are categorized into conventional batteries, dry-charged batteries, and maintenance-free batteries. The normal service life of a car battery ranges from 1 to 8 years, largely depending on the vehicle's usage conditions.
Was this review help?
10
4
Share
More Forum Discussions

Is Subject 4 Divided into Morning and Afternoon Sessions?

Subject 4 is divided into morning and afternoon sessions. Generally, the morning session starts around 9:00 AM, while the afternoon session begins at 1:00 PM or 1:30 PM. The specific session times vary by location. Below is relevant information about the Subject 4 exam: 1. Exam Duration: The Subject 4 exam lasts 45 minutes, the same as Subject 1, providing sufficient time to complete the test at a normal pace. 2. Retake Opportunity: Each Subject 4 exam session includes one retake opportunity. If a candidate fails the first attempt, they can ask the examiner to rescan their ID card for a retake. However, if the retake is also unsuccessful, the exam will be considered a failure. Upon passing Subject 1, candidates receive a Driving Skills Learning Certificate, valid for three years. Within this period, they can schedule the Subject 4 exam an unlimited number of times. Currently, most regions offer free retakes for Subject 4, though a few areas may charge a retake fee.
4
4
Share

How many hours can be logged in a day for driving practice?

Driving practice can be logged for up to 78 credit hours in a day. The details are as follows: 1. Credit hours introduction: For a C1 driver's license, the credit hours for driving practice include 12 hours for Theory (Subject 1), 2 hours for Theory (Subject 2), 24 hours for Practical Training (including 3 hours of simulated driving training), 16 hours for Theory (Subject 3), and 24 hours for Practical Training (including 4 hours of simulated driving training), totaling 78 credit hours. 2. Purpose of logging credit hours: Students log their training hours to ensure their legitimate rights and interests and to improve the quality of training provided by driving schools. After completing the phased training, the driving training and examination departments can review the students' training. Only after passing the review can students schedule their exams through the pre-examination recording system.
4
0
Share

Which lane should you enter after making a left turn?

After making a left turn, the vehicle should enter the leftmost lane. Article 51 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China" stipulates that motor vehicles passing through intersections controlled by traffic signals shall proceed according to the following rules: 1. Rule 1: At intersections with marked guide lanes, enter the guide lane according to the intended direction of travel. 2. Rule 2: Vehicles preparing to enter a roundabout shall yield to vehicles already inside the intersection. 3. Rule 3: When turning left, turn to the left side of the center point of the intersection. Turn signals shall be activated during the turn, and low beam headlights shall be used when driving at night.
4
4
Share

What is the function of the clutch in an automatic transmission vehicle?

In automatic transmission vehicles, the clutch is integrated into the transmission system to enable automatic gear shifting. Here are the relevant details: 1. Automatic Transmission: Automatic vehicles typically use an Automatic Transmission (AT) to regulate speed. While driving, the AT's control system automatically selects the appropriate gear based on engine speed and load, replacing the driver's subjective judgment and manual gear shifting operations. 2. Clutch: During vehicle operation, the driver can press or release the clutch pedal as needed to temporarily disconnect or gradually engage the engine with the transmission, thereby interrupting or transmitting the engine's power input to the transmission.
16
0
Share

Which Button is for Auto Hold?

Auto Hold has a dedicated activation button, which is the AUTO-HOLD button. Here are some relevant details: 1. Auto Hold: Auto Hold, also known as AUTO-HOLD, refers to an automatic braking function. Once activated, for example when stopping at a traffic light, there's no need to pull the handbrake, simplifying operations by avoiding the use of the handbrake or electronic parking brake. For automatic transmission models, it also eliminates the need for frequent shifting between D to N or D to P. 2. Working Principle: The Auto Hold function uses a slope sensor to provide precise parking force through the controller. During startup, the parking control unit calculates information from the clutch distance sensor, clutch engagement speed sensor, and throttle pedal sensor. When the driving force exceeds the running resistance, the parking brake is automatically released, allowing the car to start smoothly.
10
2
Share

What Causes Both the Snowflake Light and S Light to Illuminate in Automatic Transmission Vehicles?

Low outdoor temperatures and signal transmission errors can cause the snowflake light to illuminate; the S light may come on due to faults in the engine or transmission. Detailed reasons for both the snowflake light and S light illuminating in automatic transmission vehicles include: 1. Transmission fluid: If the quality of the transmission fluid is abnormal, it may damage the solenoid valve, causing both the snowflake light and S light to illuminate. 2. Pressure valve and lock-up valve: If the two pressure valves and clutch lock-up valve malfunction, or if the gear control valve fails, it can also result in both lights illuminating. 3. Outdoor temperature: The snowflake light serves as a temperature indicator—it does not illuminate above 4°C, shows a yellow snowflake light between 4°C and 0°C, and displays a red snowflake light below 0°C.
20
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.