Browse

Property For Sale Property For Rent

Used Cars Others

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What is the charging voltage for a 12V battery?

2 Answers

McGabriel

08/28/25 7:40am

12V lead-acid battery's maximum charging voltage is around 15V. The battery's lifespan and charging precautions are as follows: Charging precautions: Generally, after the electric vehicle charger's indicator turns green, floating charge for 1-2 hours can end the charging process. The charging time is usually controlled within 8-10 hours and should not exceed 12 hours. If charged overnight, the charging time will far exceed 12 hours. Overcharging an electric vehicle battery can cause a large amount of gas to erode the battery's plates, leading to the detachment of active material and ultimately reducing the battery's service life. Battery lifespan: Under ideal conditions, the number of charging cycles can reach approximately 1000-2000 times while still maintaining over 70% of usable capacity. For PHEVs, a single cycle typically covers about 50-80 kilometers, so before the battery is scrapped, it can be used purely electrically for about 100,000 kilometers.

Was this review help?

4

1

Share

GraceAnn

09/10/25 5:52am

I usually drive around a lot, and the ideal charging voltage for a 12V battery is around 14.4V. If it's too high, say over 15V, it might overcharge and damage the battery. If it's too low, below 13.8V, it won't charge properly, leading to starting issues. The specifics depend on the battery type—standard lead-acid batteries typically have a floating voltage range of 13.8V to 14.8V, where 'floating' means maintaining around 13.6V during prolonged charging. I've measured it multiple times with a multimeter and noticed that in winter, slightly higher voltage might be needed for faster charging, while in summer, it should be lowered to avoid overheating. This voltage is mainly supplied by the car's alternator or an external charger. If you frequently take short trips or leave the car parked for too long, unstable voltage can shorten the battery's lifespan. I usually recommend using a smart charger for automatic adjustment when parked—it's safer and more convenient. Remember to check the battery's health regularly; maintaining proper voltage can extend its life by years, saving both money and hassle.

Was this review help?

3

0

Share

Expand All

More Forum Discussions

Reasons for Honda's Fuel Pump Replacement?

Below is relevant information regarding Honda's fuel pump replacement: 1. Introduction to Fuel Pump Replacement: If your vehicle falls within Dongfeng Honda's recall scope for fuel pump replacement, it is essential to visit an authorized service center for replacement during regular maintenance or at any other time. The fuel pump replacement under recall is free of charge with no additional costs. Furthermore, replacing the fuel pump will not affect your vehicle in any way, as the recall aims to eliminate potential vehicle malfunctions. 2. Resin Issue: Some vehicles within Honda's recall scope have fuel pump impellers manufactured under improper resin molding conditions, resulting in insufficient resin density in the impellers. 3. Impeller Problem: The impeller may swell and deform due to fuel exposure, causing interference with the fuel pump housing. This can lead to poor fuel pump performance, preventing normal fuel supply to the engine. In extreme cases, the engine may stall while driving, posing a safety hazard.

Does driving in snow mode have any impact on the car?

Driving in snow mode has no impact on the car. Gently press the accelerator when starting: On icy and snowy roads, it is difficult for the vehicle to start, especially for front-wheel-drive cars, as the front wheels are prone to skidding, which can be very dangerous. Therefore, when starting on icy or snowy roads, press the accelerator lightly and avoid pressing it hard to start. Anticipate in advance to ensure safety: Snowfall can greatly affect driving visibility, so it is necessary to anticipate the road conditions ahead in advance to avoid sudden steering or emergency braking. Slow down and use hazard lights when turning: Before turning in snowy conditions, reduce your speed in advance and avoid braking to slow down after entering the turn. It is best to tap the brakes a few times before braking to alert the following vehicle to slow down and avoid a rear-end collision.

Will I be penalized if I rush through a yellow light that turns red halfway?

Rushing through a yellow light that turns red halfway will not result in a penalty. If the motor vehicle crosses the stop line while the light is green or yellow and it later turns red, this does not constitute a violation. When passing through a signalized intersection, drivers must always pay attention to the traffic light status, reduce speed, and avoid potential hazards. Penalties for running a red light: The penalty for running a red light is a fine and a deduction of 6 points from the driver's license. Running a red light is an extremely dangerous behavior that endangers both the driver and other vehicles. When approaching a traffic signal, drivers must slow down and be prepared to stop at any time. How to handle a red light violation: Violations for running a red light can be processed through the traffic management mobile app "12123" or directly at the vehicle management office or traffic authorities. Regardless of the method chosen, the traffic violation can be effectively resolved without affecting the use of the vehicle.

What are the reasons why the mechanical key of the Buick LaCrosse cannot open the door?

Buick LaCrosse mechanical key cannot open the door for the following reasons: 1. Disengagement: The mechanical key does not work due to disengagement. The reasons for disengagement include: the lock actuator not moving, which is caused by poor contact in the central control system circuit; if it moves, it is due to high resistance in the lock mechanism, usually caused by rust; it could also be due to the position of the door lock motor latch shifting, which can be adjusted at a repair shop; another reason is the door lock motor being damaged, resulting in insufficient pulling force. 2. Vehicle status: If the vehicle is in anti-theft lock mode, not only will the engine be locked, but the central locking system will also prevent the mechanical key from opening the door.

Why don't ordinary cars have red interiors?

To highlight the noble quality of the car. The specific details are as follows: 1. Interior: The red interior of the Porsche Macan is also used in other sports car models under the Porsche brand, aiming to highlight their sporty characteristics. 2. Highlighting Features: The Maserati Levante-S and Maserati Levante share a similar concept with Porsche, using red interiors to emphasize their sporty nature. Additional Information: The seats are the most frequently contacted area inside the car, making them the most prone to dirt. When maintaining the seats, it's essential to consider the material. Most car seats nowadays are made of genuine leather, so it's crucial to use leather polish along with a soft-bristle brush; otherwise, the effect could be as damaging as using steel wool. If possible, applying a leather care spray wax can help achieve waterproof and stain-resistant effects.

What does scanning the line mean in the driving test?

The meaning of scanning the line in the driving test is that when the car is reversing into the garage, the body of the car exceeds the boundary line, but the wheels do not press the line. Observation line points: When the car is driven to the starting position, the distance between the body of the car and the line, the body of the car should press the white line in front of the right side of the garage, but not exceed it. When reversing, pay attention to the line points, turn the steering wheel fully, and look at the garage points from the rearview mirror. When reversing into the garage: After the car enters the garage, make sure the car is straight and the steering wheel is straightened. Do not turn the steering wheel left or right. After entering the garage, be careful not to reverse too much, stop as soon as you enter the garage. When reversing out of the garage: When exiting the garage, pay attention to the distance between the body of the car and the garage line on both sides, and adjust the steering wheel appropriately.

Trending Ranking

Should You Use Internal or External Air Circulation in the Car on Snowy Days?

What documents are needed to transfer a vehicle to someone else?

What Does Vehicle Technical Grade Mean?

Why is there a humming noise after changing to snow tires?

What is the reason for the wrench warning light appearing in the car?

How Long Does It Take to Become Proficient at Driving?

At what position should you stop the car in front before starting to reverse into the parking space?

Can Auto Insurance Cover Hail Damage?

Why is the antifreeze being consumed quickly?

Does the XRV have a particulate filter?

More Forum Discussions

What is a Steering Gear?

Can a Car with a Patched Tire Drive on the Highway?

What are the Three Giants of the World Tire Industry?

Is it necessary to purchase extended warranty for BYD electric vehicles?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.