The following are the most frequently asked questions about Yuasa Battery, battery maintenance, and more. Click the plus sign to read more info on each Yuasa Battery FAQ item. If you have a question that does not appear on this list, please contact us.
Yuasa Battery, Inc. does not handle warranty issues directly. All inquiries should be directed to the dealer where the battery was purchased. The dealer’s distributor sets the warranty period and handles all warranty claims. The warranty time frame and terms are not specified by Yuasa.
No. For NP/NPX batteries, please contact GS Yuasa Energy Solutions, Inc.
For dry Conventional batteries, 1.280 standard gravity electrolyte is recommended. You can find this Electrolyte at your local auto store.
Please contact one of our other affiliates for questions related to other countries or types of batteries.
We also provide additional battery maintenance and storage information.
If a new battery becomes unserviceable within a few days or weeks after its installation, it may be due to one or more of the following reasons:
Contact a qualified technician if the condition remains the same.
When a battery is in an excessively discharged state, it does not readily accept a standard charge. The battery may appear to be accepting a charge, but charging is occurring only at the surface of the plates.
With an AGM (sealed lead-acid) battery, higher voltage is required to get the job done. Charge the battery using a charger that can consistently supply between 18 and 20 volts. Typically a charger like this is only found in the service department of a motorcycle shop. The service technician should test the battery prior to charging, and again after charging is complete. Charge time will vary based on how bad the battery is discharged. Final testing will tell you if the battery has been recovered, and to what extent.
With a conventional (flooded) lead-acid battery, slightly higher than normal charging amps are required to recover the battery from an excessively discharged state. This higher rate could be up to 10 amps, but no more. The battery may get warm during charging, but this is a good sign. It means the battery is charging. Make sure the battery’s water level is up to the top line before charging, and monitor throughout the charging process to make sure no additional water is lost. If so, replace water as needed.
If the battery still does not hold a charge after going through these procedures, best bet is to purchase a new battery. In order to ensure that the new battery does not suffer the same fate, make sure battery is charged properly and frequently enough to keep it from draining to an excessively discharged state. Charging once a month is recommended in most cases. More frequent charging may be required on today’s vehicles that tend to have a constant electrical drain. Typically, electrical drain can come from a radio, clock, alarm system, or other computer memory.
The following characteristics will tell you if a battery has been properly charged:
Naturally, batteries of different capacities require different charge rates. Generally, a battery should be charged at a slow charge rate of 1/10 its given 10 hr. capacity.
When not in use, a battery discharges on a daily basis sometimes up to 0.5-1%. This rate of discharge increases when the climate is warm. To make up for this loss from disuse, give your battery a boosting charge once a month.
Read more on how to properly store and maintain your Yuasa battery.
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.
In most applications, AGM batteries are installed in an upright position, but in some situations there is a need to tilt them (sometimes at very extreme angles) or lay them completely flat on their backs.
Conventional “wet” style batteries should never be mounted in any orientation other than upright since there is liquid electrolyte that could escape the battery.
Maintenance-free, absorbed glass mat (AGM) style batteries offer more flexibility regarding mounting angles because the electrolyte is absorbed, not flowing freely.
Different battery models have different limitations regarding mounting angles.
For questions pertaining to specific batteries or specific vehicle applications, please contact Yuasa Battery.
All 4 of these terms basically refer to the same type of battery. An example of this would be the Yuasa YTX series. These batteries are typically all black in color:
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:
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.
If you have a difficulty to filling your conventional PWC or ATV battery with acid, it’s not a flaw. It’s a feature. These “high cover” batteries are for vehicles that may flip during everyday use. This design helps protect you from acid spills but can be hard to fill the battery for the following batteries:
All 8 of these battery types are what is referred to as “Spill Resistant Design.” The red seal tube really does not hold the air in, the yellow filler cap does. These batteries are all used in applications where the battery could be exposed to a roll-over (ATV and PWC). You will notice that all 8 of these batteries have higher (taller) black covers than a standard battery. This is where the extra venting/valving is housed. The key to filling your battery is not to seal the filler hole on the cover but to allow air to exit the cell while the acid enters it. If you seal the filler hole tight, and try to pour the acid, it will not fill the cell because there is nowhere for the air to exit. Always make sure there are no open flames, kids, or pets around, and wear safety equipment.
After installing the sealed battery, retain the original sensor, including diode if so equipped.
The other option would be to remove the bulb, that lights up the indicator, on the dash board.