Please contact our Technical Department if you have any queries concerning your battery system on cell number +88-01755660212 or visit our website – www.yuasae.com.bd and send an E-mail address: info@yuasa.com.bd to us.
To prevent battery problems the inspection and maintenance procedures outlined need to be implemented. With each six month inspection, please complete the voltage log sheet provided. This will act at a historical record of the battery system and will help foresee any problem areas before they fully develop.
Good battery maintenance should include the following:
1.Always keep the acid level between LOWER and UPPER lines on conventional batteries.
2.Never allow teh battery to stand in a discharged condition.
3.Keep battery clean, dry and free of dirt.Clean battery terminals to prevent corrosion.
4.Inspect vent tube, ensuring that it is not bent, twisted or clogged.
5.Check cables, terminals and case for obvious damge or loose connections.
Use the following as a guide when examining your battery:
Check the battery's state of charge. Most batteries have a State of Charge Indicator on top of the battery that will give you an on the spot diagnosis of the battery condition. However, a more reliable way to check is with a voltmeter to determine the stabilised voltage or if the vent caps are removable a hydrometer to determine the specific gravity (SG) of the electrolyte. A charged Century battery will have a stabilised voltage above 12.5 volts and an SG reading above 1.240.
Ensure the battery top is clean, dry, free of dirt and grime. A dirty battery can discharge across the grime on top of the battery casing.
Inspect the terminals, screws, clamps and cables for breakage, damage or loose connections. These should be clean, tight and free of corrosion.
Apply a thin coating of high temperature grease to posts and cable connections for added protection.
Inspect the battery case for obvious signs of physical damage or warpage. This usually indicates the battery has been overheated or has been overcharged.
If you have a maintainable battery, it is important to check if the battery has sufficient electrolyte covering the battery plates. If topping up is required, do not over fill as the fluid levels will rise when the battery is fully charged and may overflow. Top up using distilled or demineralised water and never fill with sulphuric acid.
When servicing a sealed maintenance free (SMF) battery, check the State of Charge Indicator. This gives you a snap shot of the battery's condition and whether the battery needs to be charged or replaced. The vehicle may still start the engine although the indicator outlines to replace the battery. If the State of Charge Indicator advises 'Replace Battery' it is important that the battery is replaced as the electrolyte levels may be below the plates which can lead to an internal explosion.
For batteries used in seasonal applications and stored long term, fully recharge the battery prior to storing. Check the state of charge or voltage regularly. Should the voltage drop below 12.5V, recharge the battery. It is important to check the battery completely before reconnecting to electrical devices.
If you are unsure about the condition or state of charge of the battery, take it to your local Century battery reseller. They can inspect and test your battery and provide you with professional advice and assistance.
We will replace any battery we sell, should it fail due to defects in materials or workmanship, under normal installation, use and service, while under warranty. This warranty does not cover the exceptions listed below under, "WHAT IS NOT COVERED".
Automotive batteries are warranted only when installed in cars or light trucks. Installation of an automotive battery in any other type of vehicle or equipment voids your warranty. This warranty does not cover incidental or consequential damages such as physical injuries, property damage, loss of time, loss of use of the vehicle, inconvenience, rental vehicle, towing charges, or accommodations resulting from the failure of the battery.
Your warranty begins the day you purchase the battery, and expires at the end of the warranty period printed on your original receipt and Order Confirmation email, or whichever occurs first. This warranty cannot be transferred to anyone at any time.
Your free replacement period begins the day you purchase the battery, and expires at the end of the "Free Replacement Period" printed on your Order Invoice and Order Confirmation email, or whichever occurs first. When a battery is replaced during the "Free Replacement Period", the warranty does not renew, it continues on from the original date of purchase.
A battery that is within the warranty period and found to be only in a state of discharge will be recharged at no cost to you.
This warranty does not cover:
• Failure due to misuse, abuse, modification, accident or collision, or improper installation. • Parts under manufacturer's recall for a related problem. • Parts installed on vehicles used off-road or for racing purposes. • Parts installed on a commercial-use vehicle after 90 days (see below). • Normal wear and tear. • Used Batteries.You must take the defective battery and the Order Invoice or Order Confirmation email, to any Yuasa Battery store during normal business hours. Contact Customer Care if there is not Yuasa Battery store near you.
The following are the most frequently asked questions. If you have a question that does not appear on this list, please contact us.
Q. What type of Electrolyte to use for a dry Conventional battery?
Answer: For dry Conventional batteries, 1.280 standard gravity electrolyte is recommended and can be found at your local auto store.
Q. How long should a battery last?
Answer: Many factors affect the life of a battery:
Climate: Colder climates tend to be hard on batteries from a starting standpoint, and for the fact that many people put their bikes away for the season when not using. Sometimes without charging properly. Hotter climates tend to discharge batteries quicker, and dry out batteries quicker. “Average” climates are the best for long battery life.
Usage:A battery that is used every day has the most chance of living a long life. Batteries that sit a lot, many times are neglected. This shortens overall life. Periodic charging is the best defense.
Application: How well is the battery charged in the vehicle? Some vehicles have better charging systems than others. Older bikes have worse charging systems than new ones. Are there a lot of extra accessories on your vehicle? Sometimes a battery has a hard time keeping up with additional electrical drains, thus wearing it out quicker.
Negative Factors:
Sulfation: A build up of crystals on the plates of a battery. This comes from not charging a battery properly. The more sulfation that builds up, the harder the battery is to charge, until finally it does not charge at all.
Water Loss: Can come from overcharging, or just simple evaporation over time. This only happens with conventional batteries. This does not happen with sealed AGM batteries. Once the plates of a battery are left open to the air, above the fluid level, they can corrode very quickly. Corrosion can cause an internal short, and very quickly destroy the battery. Keeping proper water levels maintained is very important.
Lack of Charging: As mentioned previously, lack of proper charging is the main reason that a battery will not last as long as it should. At the very minimum, a battery should be charged once a month if left unused.
Complete Drain: Have you ever left your key on, and totally killed the battery? If recovered in a short time period, the battery should charge back to 100%. But every time this happens, it is similar to the battery having a “heart attack”, and shortening its overall life. Always turn your vehicle off with the keyed ignition switch, not the “kill switch”.
Better Battery Choice:
AGM: Sealed AGM batteries typically last 3 to 5 years on average. 6 to 8 years is easily obtainable with proper maintenance. Typically sealed AGM batteries will give warning before completely dying. They will start slower, and require more charging. This is your clue to replace the battery. Typically they do not fail all of a sudden.
Conventional: Conventional “acid-filled” batteries have a harder life, for many of the reasons listed above. Conventional batteries typically only last 2 to 3 years on average. Although, 4 to 5 years is possible, in the best environments, and with excellent maintenance.
Q.How do I contact another Yuasa location, other than in the Bangladesh.?
Answer: Please contact one of our other affiliates for questions related to other countries or types of batteries.
Q.What is sulfation?
Answer: Discoloration of plates with white lead sulfate crystalline deposits may occur when the battery has been left for a considerable time in a discharged condition. It can also occur as a result of the plates being exposed to air due to low electrolyte level, or when a new battery is filled with acid and stored without being charged. This phenomenon is called sulfation. Once plates have been sulfated, the activity of the affected area is permanently impaired, and the battery may not be restored to its original capacity.
Q.What does "VRLA", "MF", "AGM", and "SLA" stand for?
VRLA: Valve Regulated Lead Acid.
MF: Maintenance-Free.
AGM: Absorbed Glass Mat.
SLA: Sealed Lead Acid.
This battery would be Yuasa’s 12N-series or YB-series (Yumicron) type batteries.These batteries are typically white with a black top, and with yellow or green acid filling caps:
Standard SLI (Starting, Lighting and Ignition) refers to any standard, non-sealed battery. In this case SLI refers to older style batteries used for powersports type vehicles.
Q.What is the battery exhaust vent tube?
Answer: When a battery is charged and discharged, water contained in the electrolyte is decomposed, generating hydrogen and oxygen gases. These gases are vented out of the battery through the exhaust vent tube to prevent potentially damaging high pressure gas accumulation. Every exhaust tube comes with a small slit at each end. The reason for this slit is to release the gas, in the event that the bottom of the tube gets clogged by road debris. For this reason, it is most important to make sure the slit at the top near the battery is functioning properly.
Always be sure to remove the small red sealed tube when installing the battery. Never put this red tube back on to the battery after it is activated. Gases built up in a battery that is not allowed to vent can cause serious damage, and possible injury, if the battery bursts.
Q.How do I eliminate my acid level sensor when switching to a sealed battery?
Answwer: After installing the sealed battery, retain the original sensor, including diode if so equipped. Cut off plastic battery sensor, as close to end of wire as possible. Obtain crimp-on type 1/4″ diameter ring connector. Strip end of sensor wire and crimp on ring terminal. With vehicle’s ignition on, low acid indicator will be illuminated. While watching indicator, touch ring terminal to positive battery terminal, then to negative battery terminal. One of the two terminals (depending on bike type / model) will make the indicator go out. This is the battery terminal that you want to bolt your ring connector to. Installation is then complete. The other option would be to remove the bulb, that lights up the indicator, on the dash board.
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.
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