Monday, December 24, 2007

Good Info on Car Battery

01. How do I buy good quality battery?

- Look for a well reputable manufacturer or brand.
- Check for the specifications whether conform to JIS, DIN, or BCI standard.
- Whether battery is suitable for tropical or temperate climate used.
- Whether the manufacturer back up with warranty claim.



02. What is Dry Charged battery?

The positive and negative plates are formed / charged in acid tank. The charged plates are dried and assembled into the battery casing. Activation of battery take a place when dilute sulphuric acid is filled, the battery will give instant current and ready to use.


03. What is Wet Charged battery?

Unformed plates are assembled into battery, filled in dilute sulfuric acid and charged in the factory.


04. What is a battery made of?

It consists of P.P. casing, lid, vent plugs, positive and negative plates, separators, lead parts and dilute sulfuric acid.


05. What is CCA?

CCA stands for Cold Cranking Amperes, it is a rating used to describe how much current the battery can deliver to the starter motor for a specified time. The Battery Council International (BCI) defines CCA as "The discharged load in amperes which a new fully charged battery at 0`F (-17.8`C) can deliver for 30 seconds and maintain a voltage of 1.2 volts per cell or higher.


06. What is Reserve Capacity?

A battery must provide emergency power for ignition, lights etc. in the event of failure in the vehicle's battery recharging systems, the reserve capacity rating is defined as the number of minutes a new fully charged battery at 80`F (26.7`C) can be discharged at 25 amperes and maintain a voltage of 1.75 volts per cell or higher.


07. How do I determine the right battery for my car?

The best way is to consult the vehicle owner's manual for the correct group size and minimum rating. If this is not available, you can look up the vehicle make, model, and year in a battery application guide and note the recommended group size and rating given.

You should not use a battery with a rating lower than which the vehicle manufacturer recommends. There is no problem using a higher rated battery than that specified for the vehicle. In fact, moving to a higher rating will improve starting in the case for older vehicles and, in general, provide longer battery life.



08. How do I maintain / service my battery?

Clean the terminals and vent plugs if required. A clogged vent plug can caused an explosion. Check the water level of each cell and fill up. Always use good quality drinking water or distilled water free of ions or other chemical.The contaminated water could drastically reduce the battery life and power. Do not fill over or acid may flow overand spill on to your car. Sulphuric acid attacks your car paint and any other metal parts.


09. What precautions shall I take when charging battery?

Always handle batteries with care whether they are charged under or not. All lead-acid batteries contain highly corrosive sulphuric acid and generate explosive gases, when the battery is being charged several precautions should always be taken.

- Always charge batteries in a well-ventilated area.
- Connect the charger leads to the battery red positive(+) lead to the positive(+) terminal and black negative(-) lead to the negative(-) terminal.
- Make sure that the leads to the connections are tight and secure.
- Turn the charger off before connecting the leads to the battery to avoid dangerous sparks. (Apply the same when full charge is achieved).
- Never try to charge a damaged or frozen battery.
- Do not allow the battery to overheat or prolong the charging.
- Read and understand the charger instructions before attempting to use the equipment.



10. How do I know when I needed to replace my battery?

Warnings that a battery may need replacing or that the electrical system needs checking include:-

- Slow or interrupted turnover of the starter motor.
- The instrument panel indicates battery "discharge" for extended period after the engine is already running.
- The battery seems to lose power quickly in cold or extended starts.
- The headlights dim at idle. Unfortunately, many times there is little if any warning. If you suspect your battery is failing, the prudent thing to do is to have it load tested or replaced.



11. How long is the life spent of a battery?

The lifespan of a battery varies significantly from vehicle to vehicle, region to region and driving patterns related to the profession of the drivers. Batteries are designed to have over 200 life cycles. Each day or each start will use up a fraction of a cycle. A normal lead acid battery will have a lifespan of 18 to 30 months. If you are disappointed with the battery life you get and your car's electrical system is in good operating condition you should grade up.




12. My battery is new and how do I prevent a 'flat' battery?

Take the following precautions to prevent the battery running flat:-

- The radio, electrical items and all head lights must be switched off when the engine is not running.
- Check the alternator regularly. A faulty or loose alternator belt cannot efficiently charge the battery.
- The wiring system is not functioning properly. Any short circuit will drain the battery.

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