Saturday, September 2, 2023

মজুদ ব্যাটারির যত্ন

মজুদ ব্যাটারির যত্ন

সদ্য চার্জ করা বা চার্জবিহীন নতুন ব্যাটারি মজুদ রাখার সময় একটি উপরে আরেকটি না রেখে তাকবা সেলস ব্যবহার করা উচিত একটি ব্যাটারির প্লেট এসেম্বলি নষ্ট হওয়ার জন্য আরেকটি ব্যাটারি যথেষ্ট একটি ব্যাটারি একবার কাজে ব্যবহার করলে তাকে ওই অবস্থায় ফেলে রাখা যাবে না যদি এক বা দুই মাসের মধ্যে ব্যাটারি আর কোন কাজে ব্যবহার না করা হয় তবে ব্যাটারিকে চার্জ করে শুষ্ক ঠান্ডা স্থানে রাখতে হবে এবং কমপক্ষে প্রতি মাসে একবার চার্জ করতে হবে কারণ ব্যাটারি বসে থাকা অবস্থায় সেল্ফ রিচার্জ হয়। ডিসচার্জ অবস্থায় লেট লেট সালফেট এ পরিণত হয় ডিসচার্জ অবস্থায় ব্যাটারি বেশি দিন থাকলে সালফেট শক্ত হয়ে বড় দানা আকার ধারণ করে পুনরায় চার্জ দিলেও তা আর পূর্বের অবস্থায় ফিরে আসে না একে সালফেট ব্যাটারি বলে সালফেট ব্যাটারি চার্জ ধারণ ক্ষমতা কারেন্ট প্রদানের ক্ষমতা হারিয়ে ফেলে এই অবস্থায় নতুন ব্যাটারি পরিত্যক্ত হয়ে যায় নতুন ব্যাটারি দীর্ঘদিন মজুদ রাখার সবচেয়ে উত্তম পদ্ধতি ডায়েট চার্ট অবস্থায় রাখা।কারখানায় ব্যাটারি ফর্মিং এরপর রিচার্জ ব্যাটারিকে পূর্ণ চার্জ করে ইলেকট্রোলাইট ঢেলে অন্য কোন কনটেইনারে ব্যাটারির সাথে সর্ব করে অথবা ফেলে দেয় ব্যাটারি থেকে ইলেক্ট্রোলাইট অপসারণ করার পর বাটারি বাতাসের অনুপস্থিতে সুপার হিট দিয়ে শুষ্ক করা হয় এবং প্লাস্টিক বা রাবার দিয়ে ব্যাটারি করে রাখা হয় নেগেটিভ প্লেট কে অনেক ক্ষেত্রে কেমিক্যাল ট্রিটমেন্ট দেওয়া হয়।

যখন রাইটার্স ব্যাটারি কাজে ব্যবহার প্রয়োজন হয় তখন নিম্নলিখিত পদক্ষেপগুলো অনুসরণ করা হয়।

1 ব্যাটারির ফ্ল্যাগ গুলো খুলে ফেলতে হবে ব্যাটারির ফিলার প্লাগগুফেলতে হবে।

2 ফানেল এর সাহায্যে প্রতি ছেলে 1.20 আপেক্ষিক গুরুত্ব বৈশিষ্ট্য ফুল চার্জ এসিডিটি ইলেক্ট্রোলাইট দিয়ে সঠিক লেভেল পর্যন্ত পূর্ণ করতে হবে।

তিন প্লেট গুলো ভালোভাবে ভেজার জন্য 20 থেকে 30 মিনিট সময় অপেক্ষা করতে হবে তাহলেই ব্যাটারি 60 পার্সেন্ট থেকে 70 পার্সেন্ট চার্জ হয়ে ব্যবহারের উপযোগী হবে। আর এর পূর্বে ফ্লাট ফ্লাট গুলো লাগাতে হবে।

4 প্রথম এসিড ঢালার পর ব্যাটারি বেশ উত্তপ্ত হয়। তাই 6 থেকে 12 ঘণ্টা বিরতিতে দুই ধাপে ac15 পূরণের পরামর্শ দেওয়া হয়ে থাকে।

5 কোন কোন প্রস্তুতকারক ইলেক্ট্রোলাইট পূরণের তিন থেকে চার সপ্তাহ হালকা পূজা দেওয়ার পর ব্যাটারি পূর্ণ চাষ করার জন্য সুপারিশ করে থাকেন। আবার কোন প্রস্তুতকারক প্রথম অবস্থায় 1/3 ইনটু ক্যাপাসিটি এই হারে তিন থেকে চার ঘণ্টা বুস্টার চার্জিং এর পরামর্শ দেয়

নোট ডাই চার্জ ব্যাটারি বাজারে চালু হওয়ার প্রথম অবস্থায় ব্যাটারি থেকে বের করা ইলেকট্রোলাইট একটি বিশেষ কারণে ব্যাটারি সাথে সর্ব করা হতো এবং ওই ইলেকটলাইট দিয়ে ব্যাটারি পূরণ করা হতো।






Monday, June 5, 2023

Radiator Cap

 Radiator Cap

The radiator cap is a small yet crucial component of a vehicle's cooling system. It is located on the radiator or the coolant reservoir and serves multiple functions that contribute to the efficient operation of the cooling system and the overall health of the engine.

One of the primary functions of the radiator cap is to maintain the correct pressure within the cooling system. It is designed to withstand and regulate the pressure generated by the engine as the coolant heats up and expands. The radiator cap typically has a pressure rating stamped on it, indicating the maximum pressure it can handle. This pressure regulation helps prevent the coolant from boiling and ensures that it remains in liquid form, effectively transferring heat away from the engine.

Additionally, the radiator cap acts as a seal to maintain the integrity of the cooling system. It prevents coolant from escaping or evaporating, keeping the system properly filled. A tight seal also prevents the entry of air or other contaminants that can compromise the cooling system's performance. A faulty or loose radiator cap can result in coolant leaks, loss of pressure, and potential overheating of the engine.

Another important feature of the radiator cap is the presence of a valve or relief mechanism. This valve allows excess pressure to be released from the cooling system when it exceeds the cap's pressure rating. As the coolant heats up and expands, the excess pressure is directed to the overflow reservoir, preventing any damage to the radiator or other components. Once the engine cools down and the pressure decreases, the valve closes, and the coolant is drawn back into the system.

The radiator cap also plays a role in maintaining the proper coolant level. It often has a built-in coolant level indicator or a pressure release valve that allows coolant to be added without the need to open the entire system. This feature facilitates convenient and safe coolant top-ups, minimizing the risk of burns or injuries caused by hot coolant.


 

Furthermore, the radiator cap serves as a visual inspection point for the cooling system. It allows users to check the coolant level and condition without having to open the radiator or reservoir. This inspection can help identify any signs of coolant contamination, such as oil or debris, which may indicate a potential issue with the engine or cooling system.

Regular maintenance of the radiator cap is essential to ensure its proper functioning. Over time, the cap's sealing gasket can wear out or become damaged, compromising its ability to maintain pressure and prevent leaks. It is recommended to inspect the cap regularly and replace it if any signs of deterioration are observed.

In conclusion, while often overlooked, the radiator cap is a crucial component of a vehicle's cooling system. Its functions include regulating pressure, maintaining the system's integrity, allowing pressure release, facilitating coolant top-ups, and providing a visual inspection point. By ensuring the radiator cap is in good condition and properly maintained, vehicle owners can help promote the longevity and optimal performance of their cooling systems, reducing the risk of overheating and engine damage.

 


 

 The radiator cap is necessary for several reasons:

  1. Pressure Regulation: The radiator cap helps maintain the correct pressure within the cooling system. As the engine runs and the coolant heats up, it expands and creates pressure. The radiator cap is designed to withstand and regulate this pressure. It has a pressure rating stamped on it, indicating the maximum pressure it can handle. By regulating the pressure, the radiator cap prevents the coolant from boiling and ensures it remains in liquid form, effectively transferring heat away from the engine.

  2. Coolant Retention: The radiator cap acts as a seal to maintain the integrity of the cooling system. It prevents coolant from escaping or evaporating, ensuring that the system remains properly filled. This is important because a properly filled cooling system allows for efficient heat transfer and prevents overheating of the engine. A loose or faulty radiator cap can result in coolant leaks, loss of pressure, and potential engine overheating.

  3. Pressure Release: The radiator cap features a valve or relief mechanism that allows excess pressure to be released from the cooling system when it exceeds the cap's pressure rating. As the coolant heats up and expands, the excess pressure is directed to the overflow reservoir. This prevents any damage to the radiator or other components. Once the engine cools down and the pressure decreases, the valve closes, and the coolant is drawn back into the system. This pressure release mechanism helps protect the cooling system from excessive pressure buildup and potential damage.

  4. Coolant Level Indicator: Many radiator caps have a built-in coolant level indicator or a pressure release valve that allows for easy coolant top-ups without the need to open the entire cooling system. This feature facilitates convenient and safe maintenance, minimizing the risk of burns or injuries caused by hot coolant. It also helps ensure that the cooling system remains properly filled, as a low coolant level can lead to inadequate heat transfer and engine overheating.

  5. Visual Inspection: The radiator cap serves as a visual inspection point for the cooling system. It allows users to check the coolant level and condition without having to open the radiator or reservoir. This visual inspection can help identify any signs of coolant contamination, such as oil or debris, which may indicate a potential issue with the engine or cooling system. Early detection of such problems can help prevent further damage and costly repairs.

In summary, the radiator cap is necessary for regulating pressure, maintaining coolant retention, allowing pressure release, facilitating coolant top-ups, and providing a visual inspection point for the cooling system. It plays a vital role in the proper functioning of the cooling system, preventing overheating, and ensuring the engine operates at optimal temperatures. Regular maintenance and inspection of the radiator cap are essential to ensure its effectiveness and prevent cooling system issues.

Radiator

 

 Radiator

A radiator is a fundamental component of heating systems that helps regulate temperature and maintain comfort in homes, offices, and various other environments. It plays a vital role in dissipating heat and ensuring efficient thermal distribution throughout a space. Radiators are commonly used in both residential and commercial settings, providing warmth during the colder months or in cooler regions.

Traditionally, radiators have been made of cast iron, which offers excellent heat retention properties. However, modern radiators are now available in a wide range of materials, including aluminum and steel. These materials offer benefits such as lightweight construction, faster heat transfer, and increased durability. The choice of material depends on the specific requirements of the heating system and the desired aesthetic appeal.

The functioning of a radiator is relatively simple. It operates based on the principle of convection, where air is heated when it comes into contact with the warm surface of the radiator. As the warm air rises, it creates a convection current, drawing in cooler air from the room and creating a continuous cycle of heat distribution. This process ensures that the entire space is heated evenly, providing a comfortable environment for occupants.

The design of radiators has evolved significantly over the years, both in terms of functionality and aesthetics. Today, radiators are available in various shapes, sizes, and styles, allowing for customization and integration with different architectural designs. From traditional panel radiators to sleek vertical models, there is a wide range of options to suit any interior decor.

In addition to the conventional radiators, there are also innovative alternatives available, such as underfloor heating systems and towel radiators. Underfloor heating utilizes a network of pipes or electric mats installed beneath the floor surface to provide radiant heat. This type of heating system offers the advantage of evenly distributed warmth and eliminates the need for visible radiators.

Towel radiators, on the other hand, serve a dual purpose by not only providing heat but also serving as a place to dry towels. These radiators are commonly found in bathrooms and are available in various sizes and styles to complement the overall design of the space. They offer convenience and functionality while adding a touch of luxury to the room.

Energy efficiency has become a significant consideration in radiator design, with advancements in technology leading to the development of energy-saving features. Thermostatic radiator valves (TRVs) allow individual control of each radiator, enabling users to adjust the temperature in different rooms according to their preferences. This helps optimize energy consumption and reduce heating costs.


 

Furthermore, modern radiators often incorporate features like low-water content and efficient heat ex-changers, maximizing heat output while minimizing energy waste. These innovations contribute to sustainability efforts by reducing carbon emissions and promoting energy conservation.

In conclusion, radiators are indispensable components of heating systems, providing warmth and comfort in homes, offices, and various other spaces. Their evolution in design, materials, and energy efficiency has resulted in a wide array of options to suit different needs and preferences. From traditional panel radiators to cutting-edge underfloor heating systems, radiators continue to play a vital role in maintaining a cozy and welcoming environment, regardless of the weather outside.

Radiator Coolant 


Radiator coolant, also known as antifreeze or coolant, is a vital fluid that plays a crucial role in the proper functioning of a vehicle's cooling system. It serves multiple purposes, including preventing overheating, protecting against freezing in cold temperatures, and safeguarding the engine from corrosion and damage.

The primary function of radiator coolant is to regulate and dissipate heat generated by the engine. As the engine runs, it produces a significant amount of heat, and without proper cooling, it can quickly reach dangerously high temperatures. Coolant helps absorb this excess heat and transfers it to the radiator, where it is dissipated into the surrounding air.

One of the key properties of radiator coolant is its high boiling point. The coolant is designed to have a boiling point higher than the normal operating temperature of the engine. This characteristic ensures that the coolant remains in liquid form even when the engine is running at elevated temperatures. By preventing the coolant from boiling, it maintains its effectiveness in absorbing and carrying away heat.

In addition to its high boiling point, radiator coolant also has a low freezing point. This characteristic is particularly important in colder climates or during the winter season when temperatures can drop below freezing. The coolant's low freezing point prevents it from solidifying, which can lead to the expansion of fluids and potential damage to the engine block or radiator. By keeping the coolant in liquid form, it maintains its ability to flow through the cooling system and effectively regulate engine temperature.

Another critical function of radiator coolant is its ability to prevent corrosion within the cooling system. Coolant contains additives and inhibitors that protect metal components from rust and corrosion. Over time, without the proper protection, metal parts within the cooling system can deteriorate, leading to leaks, blockages, and reduced efficiency. The additives in coolant help form a protective layer on the metal surfaces, preventing corrosion and extending the lifespan of the cooling system.


 

To ensure the optimal performance of the cooling system, it is essential to maintain the proper coolant level and adhere to manufacturer recommendations regarding the type of coolant to use. Different vehicles may require specific types of coolant, such as ethylene glycol-based or polypropylene glycol-based, depending on the materials used in the engine and cooling system components.

Regular maintenance of the coolant system is crucial for its longevity and efficiency. This includes regular coolant inspections, checking for leaks, and performing coolant flushes and changes according to the manufacturer's guidelines. Over time, coolant can become contaminated with debris, dirt, and other contaminants, compromising its effectiveness. Regular coolant changes help remove these impurities and ensure the coolant's ability to perform its intended functions.

In conclusion, radiator coolant is a vital component of a vehicle's cooling system. It plays a critical role in maintaining engine temperature, preventing overheating and freezing, and protecting against corrosion. By selecting the appropriate coolant and adhering to regular maintenance, vehicle owners can ensure the longevity and optimal performance of their cooling systems, promoting the overall health and reliability of their vehicles.


 

Thursday, June 1, 2023

BRTA

             

Bangladesh Road Transport Authority: Streamlining Transportation for a Better Future


The Bangladesh Road Transport Authority (BRTA) plays a vital role in ensuring efficient and safe road transportation across the country. As a regulatory body, the BRTA oversees various aspects of the road transport system, including licensing, vehicle registration, road safety, and traffic management. This article explores the functions and significance of the BRTA in shaping the transportation landscape of Bangladesh.

1. Vehicle Registration and Licensing:
One of the primary responsibilities of the BRTA is to regulate vehicle registration and licensing. The authority ensures that all vehicles operating on the roads are properly registered and meet the necessary safety standards. By enforcing strict guidelines and conducting regular inspections, the BRTA helps maintain a standardized vehicle fleet, reducing the risk of accidents and ensuring roadworthiness.

2. Road Safety and Traffic Management:
The BRTA plays a crucial role in promoting road safety and managing traffic flow. Through the implementation of rules and regulations, the authority strives to minimize road accidents and congestion. The BRTA collaborates with law enforcement agencies to enforce traffic rules, conducts awareness campaigns to educate the public about safe driving practices, and implements innovative measures such as intelligent traffic systems to enhance efficiency on the roads.

3. E-services and Digitalization:
In recent years, the BRTA has taken significant strides in digitalizing its services to enhance convenience and accessibility. The introduction of online vehicle registration, license renewal, and fee payments has streamlined administrative processes and reduced bureaucratic hurdles. This digital transformation has not only improved the overall efficiency of the BRTA but has also made it easier for citizens to access and avail services, saving time and effort.

4. Vehicle Fitness and Emission Control:
The BRTA places great emphasis on ensuring that vehicles comply with emission standards and undergo regular fitness checks. By imposing strict regulations on emissions and conducting thorough inspections, the authority contributes to reducing air pollution and promoting a cleaner environment. Vehicles failing to meet the required standards are either repaired or taken off the roads, further enhancing public health and sustainability.

5. Implications for Economic Growth:
Efficient and reliable transportation is essential for economic growth. The BRTA's efforts in improving road safety, streamlining services, and managing traffic congestion have a direct impact on the overall productivity of the country. By reducing travel time and improving road conditions, businesses can operate more effectively, leading to increased trade, investments, and economic development.


Conclusion:
The Bangladesh Road Transport Authority (BRTA) plays a vital role in shaping and regulating the road transport system of Bangladesh. From vehicle registration and licensing to road safety initiatives and digitalization of services, the BRTA has made significant strides in ensuring a safer, more efficient transportation network. Through its efforts, the BRTA not only contributes to reducing road accidents and traffic congestion but also promotes economic growth and environmental sustainability. As Bangladesh continues to develop, the BRTA's commitment to innovation and effective regulation will remain essential in creating a better future for all citizens.




Wednesday, May 31, 2023

Engine Oil

 

Engine Oil



 

 

Engine oil is an essential component of any vehicle's maintenance regimen. It plays a vital role in lubricating the engine's moving parts, reducing friction, and dissipating heat. Without engine oil, an engine would quickly succumb to wear and tear, resulting in decreased performance, increased fuel consumption, and potential engine failure. In this article, we will delve into the importance of engine oil, its composition, types, and the significance of regular oil changes.

To understand the importance of engine oil, we must first explore its primary functions. One of its key roles is lubrication. The engine consists of numerous metal parts that move at high speeds and under extreme pressures. Engine oil forms a thin film between these parts, reducing friction and preventing direct metal-to-metal contact. This lubrication minimizes wear and tear, ensuring the engine's longevity and optimal performance.

In addition to lubrication, engine oil also aids in cooling the engine. The internal combustion process generates substantial heat, and without proper cooling, the engine would overheat, leading to severe damage. Engine oil absorbs heat from various engine components and dissipates it through the oil cooler and the oil pan, maintaining the engine's temperature within the desired range.

Another crucial function of engine oil is cleaning. Over time, the engine accumulates dirt, debris, and combustion by-products. Engine oil contains detergents and dispersants that help suspend these particles and prevent them from depositing on vital engine surfaces. This prevents sludge formation, keeps the engine clean, and maintains the efficiency of the oil filter.

Engine oil also acts as a sealant. It forms a protective layer on the engine's cylinder walls, piston rings, and valve guides, preventing oil leakage and maintaining proper compression. This sealing property ensures optimal engine performance and prevents oil from contaminating the combustion chamber.

 


 

To fulfill these functions effectively, engine oil is formulated with a blend of base oils and additives. Base oils can be mineral-based (derived from crude oil), synthetic (chemically engineered), or a combination of both (semi-synthetic). Mineral-based oils are cost-effective and provide sufficient protection for standard engines, while synthetic oils offer superior performance, especially in extreme temperatures and demanding conditions.

Additives are crucial components of engine oil that enhance its properties. These additives can include antioxidants, anti-wear agents, detergents, dispersants, viscosity modifiers, and friction modifiers, among others. Each additive has a specific role in improving the oil's performance, protecting the engine, and prolonging its life.

Now, let's explore the different types of engine oil. The most common classification is based on viscosity, which is a measure of the oil's thickness or resistance to flow.

 

Engine Oil Types 

Engine oil is a crucial component of any vehicle's maintenance routine, ensuring smooth functioning and extending the lifespan of the engine. With various types of engine oils available on the market, it is essential for vehicle owners to understand the different options and their respective benefits. In this article, we will delve into the different types of engine oil and their characteristics.

  1. Conventional Oil: Conventional oil, also known as mineral oil, is the most basic and traditional type of engine oil. It is derived from crude oil through a refining process. Conventional oil provides decent lubrication and protection for the engine but is less effective at handling extreme temperatures and high-stress conditions. It requires regular oil changes and is typically the least expensive option.

  2. Synthetic Oil: Synthetic oil is engineered in a laboratory, using a combination of chemically modified compounds and additives. This type of oil offers superior lubrication and protection, even under extreme temperature and high-stress conditions. Synthetic oil has a longer lifespan, better viscosity stability, and improved fuel efficiency compared to conventional oil. It is more expensive but provides excellent performance and is recommended for high-performance vehicles or those subjected to harsh operating conditions.

  3. Synthetic Blend Oil: Synthetic blend oil, as the name suggests, is a combination of synthetic and conventional oils. It offers a balance between performance and cost-effectiveness. Synthetic blend oil provides improved engine protection compared to conventional oil and performs reasonably well under high temperatures. It is a popular choice for vehicles that require enhanced performance but do not necessarily need the full benefits of synthetic oil.

  4. High-Mileage Oil: High-mileage oil is specifically formulated for vehicles with over 75,000 miles on their odometers. It contains additives that help condition seals and gaskets, reducing leaks and oil consumption. High-mileage oil also provides extra lubrication for aging engines, helping to mitigate the effects of wear and tear. It is available in both conventional and synthetic options and is beneficial for older vehicles with worn engine components.

  5. Racing Oil: Racing oil is designed for high-performance and racing engines that operate under extreme conditions. It is formulated to handle high RPMs, extreme temperatures, and heavy loads. Racing oil typically has a higher viscosity and contains additional additives to improve lubrication and prevent engine wear. It is not recommended for everyday driving but is essential for race cars or vehicles used in competitive motorsports.

When selecting engine oil, it is crucial to refer to the vehicle manufacturer's recommendations outlined in the owner's manual. Each vehicle has specific requirements based on engine design, operating conditions, and oil change intervals. Following these guidelines ensures optimal engine performance, reliability, and longevity.

In conclusion, engine oil plays a vital role in maintaining the health and performance of a vehicle's engine. The choice of oil type depends on factors such as vehicle usage, age, and operating conditions. Whether it's conventional, synthetic, synthetic blend, high-mileage, or racing oil, understanding the characteristics of each type allows vehicle owners to make informed decisions and provide their engines with the proper lubrication and protection they need. Regular oil changes using the recommended type and viscosity of oil are essential for keeping engines running smoothly and efficiently for years to come.

 

Wednesday, January 25, 2023

How to use engine oil in a Engine?

How to use engine oil in a Engine? Engine oil is an important part of a vehicle’s engine, as it helps to lubricate the moving parts, reduce friction, and prevent corrosion. Without the proper type of engine oil, an engine can suffer from reduced performance, increased wear, and even complete failure. As such, it is important to know how to use engine oil properly in order to ensure that the engine is running efficiently and safely. The first step in using engine oil is to determine the proper viscosity and type of oil to use. This is usually determined by the manufacturer of the vehicle, and the information can be found in the owner’s manual. It is important to use the correct type of oil, as using the wrong type can cause sludge and varnish to form in the engine, which can cause damage. Once the correct type of oil has been determined, the next step is to ensure that the engine is properly drained of old oil. This should be done before every oil change, and should involve removing the oil drain plug and allowing the old oil to drain out completely. Once the old oil has been completely drained, the oil filter should also be replaced before new oil is added. Once the engine has been drained and the filter replaced, the new oil can be added. This should be done slowly and in small amounts, until the dipstick shows that the oil level is correct. The oil should then be checked to make sure that it is the correct type and viscosity, and that it is free of contaminants. Once the oil is in the engine, it is important to make sure that it is changed regularly. The frequency of oil changes will depend on the type of engine, the type of oil used, and the type of driving that the vehicle does. Generally, most engines should have the oil changed every 3,000-5,000 miles. It is also important to check the oil level regularly, and to add oil if it is low. Engine oil is an important component of a vehicle’s engine, and it is important to use the correct type and to change it regularly. Doing so will help to ensure that the engine is running efficiently and safely, and that it is able to last for many years to come.

Tuesday, April 13, 2021

Common faults in the battery


Common faults in the battery






The following faults are commonly found in batteries.


Self-discharged: Batteries are gradually discharged when left unused. This is called self-discharge. Depending on the age of the battery, its ampere hour capacity is charged from 0.2% to 1% percent per day. Its increases with increasing temperature but the amount of Self discharge is normal rule but fast self discharge above 3% indicates the battery fatal error. Self is usually discharged for the following reasons.


a)Internal Chemical Process: Small batteries often accumulate antimony in the negative plate when used for work, so it creates a short circuit in itself and uses the charge of the negative plate.


b)Leakage current: Dirt and acid waste accumulates on top of the battery surface, creating a thin transport path between positive and negative battery lugs, which discharges the battery.


This problem can be overcome by occasionally cleaning with a rag. A leak can be created in the bottom of battery cells by depositing dirt and waste.


The following tasks need to be done regularly to reduce self-portraits.


1.The battery must be kept clean.


2.Neutral water should be used in batteries rather than pure minerals or distilled water.


3.If the battery is left unmarked, booster charging should be done once per month at the rate of (1/3*capacity) otherwise Thambrule (1/3*Cpacity) trickle charging should be done at the trickle charging rate.







Overcharge: Overcharge is a serious problem with batteries. Overcharging the battery causes the following errors.


a)Frequent topping up is required on overcharged batteries.


b)Excessive use of active materials reduces battery life.


c)Going over-charge can cause the battery plate to swell, erode or become intact.


d)Overcharging may result in a change in the entire electrolyte mass.


e)Plate & separation can be ruined by exposure to air as electrolyte levels drop rapidly.


f)Active materials can fall off and accumulate in the upper floors, creating short circuits.


g)The container may burst. Topping up with the right amount of distilled water.


h)The relative importance of the electrolyte in the cells may be more or less determined by load test or cadmium test.


i)The color of the electrolyte may change. The active materials may fall from plates and mix with the electrolyte by over charging. This can be done by testing the load of the battery and knowing the internal condition of the battery.


   

What is a fault battery?


Ans- 

A car wont crank and starts eventually. This happens for low charge battery or left the car on for long time 



How can you tell if car battery needs replacing?


Ans-

1.Slow engine crank
2.Low battery fluid level
3.check engine light
4.Swelling and bloating battery case
5.Battery Leak
6.Old age

What is the cause of battery failure?

Ans- 

1.Lack of maintenance
2.Deep Discharging
3.Aging
4.Heat
5.Vibration
6.Fast Charging
7.Loss of water
8.Under Charging


How often are car batteries replaced?

Ans-

A general rule of thump that you should change your car battery about every after three years.


Why does my car battery always need a boost?

Ans-

Usually after 3–4 years the battery is unable to hold its charge. Starting to wear and tear. Buy a new one if that is the case. The car battery is an important component of the car and should be checked up once a month ideally.


As a mechanic, what is the most common fault on a car?
Ans-

Tires , brakes, and batteries. And pretty much in that order. 


What causes batteries to explode?
Ans-


Any battery can explode given the wrong conditions. This usually happens if the charge (or discharge) current is too high causing the battery to heat up and create internal pressure. Car batteries that have exploded because the vent caps were blocked although this is quite a rare occurrence. Most common are Lithium batteries that develop a fault or have their terminals short circuited. They then conduct extremely high currents for their size, overheat and explode in flames.