Support

  • Acid
    • Liquid in the electrolyte of a lead-acid battery.

     

  • Acid Stratification
    • When charging a traditional/flooded lead-acid cell, high-density acid is produced in the plates. This heavy acid drops as a result of gravitation to the lower part of the cell while lower density acid rises to the top of the cell. This stratification of acid can cause loss of capacity and/or battery failure. Acid stratification is a much smaller concern in AGM batteries.

     

  • Active Material
    • Chemically active compounds in a cell or battery that convert from one composition to another while producing current (electrical energy) or accepting current from an external circuit.

     

  • Absorbent Glass Mat (AGM)
    • The mat of micro glass fibers, which is used for fixing the sulfuric acid in lead accumulators.

     

  • Ampere (Amp)
    • The unit of measure of the electron flow, or current, through a circuit.

     

  • Ampere (Amp) Hours
    • The unit of measure for a battery’s electrical storage capacity. Multiply the current in amperes by the time in hours of discharge.

     

  • Battery
    • One or more galvanic (electrochemical) cells electrically coupled into a single unit and equipped with attachments for external electrical connections.

     

  • Battery Charger
    • Device supplying electrical energy to a secondary battery.

     

  • Capacity
    • The ability of a fully charged battery to deliver a specified quantity of electricity at a given rate over a definite period of time.

     

  • Cell
    • The basic electrochemical current-producing unit in a battery consisting of a set of positive plates, negative plates, electrolyte, separators and casing. There are six cells in a 12-volt lead-acid battery.

     

  • Charge Acceptance
    • The quantity of current in ampere hours that a battery in a defined charge state can accept at a specified temperature and charge voltage within a defined period.

     

  • Circuit
    • Path followed by a flow of electrons. A closed circuit is a complete path. An open circuit has a broken or disconnected path.

     

  • Cold-Cranking Amps (CCA)
    • Number of amperes a lead-acid battery at 0oF (-17.8oC) can deliver for 30 seconds and maintain at least 1.2 volts per cell.

     

  • Container
    • The polypropylene or hard rubber case that holds the plates, straps and electrolyte.

     

  • Corrosion
    • Destructive chemical reaction of a liquid electrolyte with a reactive.

     

  • Cover
    • The lid for the container.

     

  • Current
    • Flow of electricity measured in amperes.

     

  • Cycle
    • Charging followed by discharging, repeated at regular intervals.

     

  • Deep-Cycle Battery
    • Battery that provides a steady amount of current over a long period of time. It provides a surge when needed and is designed to be deeply discharged over and over again.

     

  • Discharge
    • Delivering current through the battery.

     

  • Deep Discharge
    • State in which a cell is fully discharged using low current, so that the voltage falls below the final discharging voltage.

     

  • Electrolyte
    • A solution of sulfuric acid and distilled water that conducts current through the movement of ions between positive and negative plates.

     

  • Grid
    • Lead alloy framework that supports the active material of a battery plate and conducts current.

     

  • Ground
    • Reference potential of a circuit. In automobile use, the result of attaching the battery cable to the body frame, which is used as a path for completing a circuit in lieu of a direct wire from a component. Today, over 99 percent of autos use the negative terminal of the battery as the ground.

     

  • Lead-Acid Battery
    • Battery made up of plates, lead and lead oxide (various other elements are used to change density, hardness, porosity, etc.) with a 35 percent sulfuric acid and 65 percent water solution. This solution is called an electrolyte, which causes a chemical reaction that produces electrons.

     

  • Maintenance-Free Battery
    • Battery in which you don't have to check or refill the electrolyte levels.

     

  • Ohm
    • Unit for measuring electrical resistance or impedance within an electrical circuit.

     

  • Plate - Positive
    • Cast metallic frame that contains the lead dioxide active material.

     

  • Plate - Negative
    • Cast metallic frame that contains a spongy lead active material.

     

  • Reserve Capacity Rating (RC)
    • Number of minutes a battery at 26.7C/80o F can be discharged at a 25-amp rate until reaching 10.5 volts (for a 12-volt battery) and maintaining 10.5 volts for a 12-volt battery. The higher the rating, the longer your vehicle can operate should your alternator or fan belt malfunction.

     

  • Sealed Battery
    • Battery in which you don't have to check or refill the electrolyte levels. Leak-proof at angles over 45 degrees, also called VRLA (Valve Regulated Lead-Acid).

     

  • Separators
    • Porous dividers between plates that prevent physical contact.

     

  • Short Circuit
    • An unintended current-bypass in an electric device or wiring, generally very low in resistance and thus causing a large amount of current to flow. In a battery, a cell short circuit may be damaging enough to discharge the cell and render the battery useless.

     

  • Starting, Lighting, Ignition (SLI) Battery
    • Rechargeable battery that supplies electric energy to an automobile to power the starter motor, the lights and the ignition system of a vehicle’s engine.

     

  • State of Charge (SOC)
    • The amount of electrical energy stored in a battery at a given time expressed as a percentage of the energy when fully charged.

     

  • Terminals
    • Electrical connection from the battery to the external circuit. Each terminal is connected to either the first (positive) or last (negative) strap in the series connection of cells in a battery.

     

  • Valve Regulated Lead-Acid (VRLA) Battery
    • Battery that is sealed and maintenance-free.

     

  • Volt
    • Unit of measure for electrical potential.

     

  • Watt
    • Unit of measure for electrical power.

     

If you don't have aftermarket electrical accessories in your vehicle, we recommend the REDTOP® 35. If you do have aftermarket electrical accessories, such as an audio system with amps, we recommend YELLOWTOP® D35. Both of these are top-post-only batteries.

 

Please note we also make a group 75/25 battery (some retailers will label it 75/35 in their system). This battery has both top and side posts and probably will not work in your vehicle. The positive and negative posts are on the wrong side for your vehicle and your cables may not reach.

OPTIMA YELLOWTOP® CHARGING INFORMATION

The following charging methods are recommended to ensure a long battery life. Always use a voltage-regulated charger, with voltage limits set as described below.

 

YELLOWTOP Type: D51 & D51R - D35 – DS46B24R - D75/25 - D34 – D34/78 - D27F - H6 - H7

These batteries are dual-purpose. They are designed for engine start and cyclic applications and for use in vehicles with large accessory loads.

 

Recommended charging information:

  • Alternator:
    • 13.65 to 15.0 volts, no amperage limit.

  • Battery Charger:
    • 13.8 to 15.0 volts, 10 amps maximum, for approximately six to twelve hours.

  • Cyclic Applications:
    • 14.7 volts, no current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below one amp, finish with two-amp constant current for one hour.

  • Rapid Recharge:
    • Maximum voltage 15.6 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:
    • 13.2 to 13.8 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.

     


OPTIMA COMMERCIAL YELLOWTOP CHARGING INFORMATION

YELLOWTOP Type: D31A & D31T

These batteries are dual-purpose. They are designed for engine start and deep-cycle applications for use in vehicles with large accessory loads.

 

Recommended charging information:

 

  • Alternator:

    • 13.65 to 15.0 volts, no amperage limit.

  • Battery Charger:

    • 13.8 to 15.0 volts, 10 amps maximum, for approximately six to twelve hours.

  • Cyclic Applications:

    • 14.7 volts, no current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below one amp, finish with three-amp constant current for one hour.

  • Rapid Recharge:

    • Maximum voltage 15.6 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:

    • 13.2 to 13.8 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.

     

 

 


 

OPTIMA BLUETOP® CHARGING INFORMATION

The following charging methods are recommended to ensure a long battery life. Always use a voltage-regulated charger, with voltage limits set as described below.

BLUETOP Type: 34M

These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep-cycle applications.

 

Recommended charging information:

 

  • Alternator:

    • 13.3 to 15.0 volts, no amperage limit.

  • Battery Charger:

    • 13.8 to 15.0 volts, 10 amps maximum, for approximately six to twelve hours.

  • Rapid Recharge:

    • Maximum voltage 15.6 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:

    • 13.2 to 13.8 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.

BLUETOP Type: D34M / D31M/ D27M

These batteries are dual-purpose. They are designed for engine starting and deep cycling applications, as well as for use in boats with large accessory loads.

 

Recommended charging information:

 

  • Alternator:

    • 13.65 to 15.0 volts, no amperage limit.

  • Battery Charger:

    • 13.8 to 15.0 volts, 10 amps maximum, for approximately six to twelve hours.

  • Cyclic Applications:

    • 14.7 volts, no current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below one amp, finish with two-amp constant current for one hour for D34M and three-amp constant current for one hour for D27M and D31M.

  • Rapid Recharge:

    • Maximum voltage 15.6 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:

    • 13.2 to 13.8 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.


 


 

OPTIMA REDTOP® CHARGING INFORMATION

The following charging methods are recommended to ensure a long battery life. Always use a voltage-regulated charger, with voltage limits set as described below.

 

REDTOP Type: 34 & 34R - 34/78 - 78 - 25 & 35 - 75/25

These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep-cycle applications.

 

Recommended charging information:

 

  • Alternator:

    • 13.3 to 15.0 volts, no amperage limit.

  • Battery Charger:

    • 13.8 to 15.0 volts, 10 amps maximum, for approximately six to twelve hours.

  • Rapid Recharge:

    • Maximum voltage 15.6 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:

    • 13.2 to 13.8 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.

REDTOP Type: 6V

These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep-cycle applications.

 

Recommended charging information:

 

  • Alternator:

    • 6.65 to 7.5 volts, no amperage limit.

  • Battery Charger:

    • 6.9 to 7.5 volts, 10 amps maximum, for approximately six to twelve hours.

  • Rapid Recharge:

    • Maximum 7.8 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below one amp.

  • Float Charge:

    • 6.6 to 6.9 volts, one amp maximum current, time indefinite (at lower voltage).
    • Strictly adhere to all limits.

  • Safety Information:

    • Always wear safety glasses when working with batteries.

    • Always use a voltage-regulated battery charger with limits set to the above ratings. Overcharging can cause the safety valves to open and battery gasses to escape, resulting in premature failure. These gasses are flammable! You cannot replace water in sealed batteries that have been overcharged. Any battery that becomes very hot or makes a hissing sound while recharging should be disconnected immediately.

    • Failure to fully charge a battery can result in poor performance and a reduction in capacity.

    • These guidelines are intended for typical consumer applications. For military, commercial applications or new equipment design, please contact OPTIMA for additional technical information and assistance

Because of the high-purity lead grid in the OPTIMA battery, it has a self-discharge rate much lower than conventional flat-plate batteries. This means the OPTIMA battery can sit for longer periods while retaining enough charge to start your vehicle when stored and maintained properly. Depending on storage temperature and the state of charge when put into storage, it can usually sit for eight to 12 months and still start most vehicles.

 

When possible, store your battery in a cool, dry location. Check the battery voltage every six months and charge if it falls below 12.4 volts.

 

Remember, newer vehicles with onboard electronics such as computers, LCD screens, game systems, GPS units, clocks, etc., require battery power to retain system memory while the vehicle is parked. If the vehicle is to be stored for long periods, you should use a maintenance charger to compensate for this drain. During maintenance, the voltage should be regulated between 13.2 and 13.8 volts, one amp maximum. On older vehicles without electronics, disconnect the battery cables when the vehicle is not being used for extended periods.

All batteries gradually lose their charge when stored over long periods of time. However, AGM batteries, including high-performance OPTIMA® batteries, lose their charge much more slowly. This helps to prevent the battery from becoming deeply discharged during storage, but it won't completely protect it from damage.

 

Even when your vehicle is turned off, there still may be a drain on the battery. This is especially true of newer vehicles equipped with computers, alarm systems and clocks that continue to run even when the vehicle is off. Over time, these will drain a battery to voltages too low to start the vehicle. It could even continue to drain to the point of damaging the battery.

With batteries as durable as ours, you might wonder why we offer warranties in the first place. Well, at OPTIMA Batteries you could say we’re just used to going the extra mile.

Warranty Guide Manual

 

OPTIMA YELLOWTOP® WARRANTY INFORMATION

H6, D34/78, D75/25, D34, D35, D27F, D51, D51R Automotive, LTV, DS46B24R, Car Audio

36 months free replacement

Series String Applications With Battery Management System or CV/CC Charge Method

12 months free replacement

Series String Applications Without Battery Management System

1 month free replacement

 

 

COMMERCIAL YELLOWTOP WARRANTY INFORMATION

D31A, D31T Commercial

24 months free replacement

D27F, D34/78, D75/25, D34, D35, D51, D51R, DS46B24R, Commercial

12 months free replacement

Series String Applications With Battery Management System or CV/CC Charge Method Above

12 months free replacement

Series String Applications Without Battery Management System

1 month free replacement

 

 

OPTIMA REDTOP® WARRANTY INFORMATION

6V, 12V Passenger Vehicle / Light Truck (noncommercial)

36 months free replacement

Commercial

12 Months free replacement

Abusive service / Deep-cycle Applications / Car Audio

Not covered

 

 

OPTIMA BLUETOP® WARRANTY INFORMATION

All BLUETOP Starting and Dual-Purpose Batteries

24 months free replacement

Series String Applications with battery management system or CV/CC Charge Method Above (deep-cycle only)

12 months

Series String Applications Without Battery Management System (Deep-Cycle Only)

1 month