Inspired by a passion for power and reckless behavior.

An OPTIMA® RedTop battery is the only battery specifically designed to take abuse. Its patented SPIRALCELL® Technology offers 15 times the vibration resistance and up to twice the life of ordinary batteries. Plus, it's spill-proof, highly resistant to heat and cold, and can be stored for long periods without maintenance. If you like to play hard, OPTIMA® is the battery for you.

34 & 34R - 34/78 - 6V - 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, 6-12 hours
approximate. 

Rapid Recharge:
Maximum voltage 15.6 volts (regulated). 
Maximum current: No limit as long as temperature
< 125°F (51.7°C). 
Maximum recharge time: Charge until current
drops below 1 amp.

Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time
indefinite (at lower voltage). 

To charge the OPTIMA® 6V-1050, six volt battery,
divide the charge voltage setting in half.

All limits must be strictly adhered to.

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.

Where loud comes from.

OPTIMA® Yellow Top batteries, featuring SPIRALCELL® Technology, are designed for all of your deep cycle needs.

It's perfect for people who are serious about sound.

OPTIMA's® power is cleaner with higher voltage output than conventional batteries. You can play your system louder and longer. And they have a greater cycle life so they can be drained and recharged more often. Plus, they're spill-proof and can withstand 15 times the
vibration of ordinary batteries.

D51 & D51R - D35 - D75/25 - D34 - D34/78
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, 6-12 hours approximate. 

Cyclic Applications:
14.7 volts, no current limit as long as battery temperature
remains below 125°F (51.7°C). When current falls below 1
amp, finish with 2 amp constant current for 1 hour.

Rapid Recharge:
Maximum voltage 15.6 volts (regulated). 
Maximum current: No limit as long as temperature <125°F (51.7°C). 
Maximum recharge time: Charge until current drops below 1 amp. 

Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at lower voltage).

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 isconnected immediately. 

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

SOME DAYS, ENDURANCE IS MORE IMPORTANT THAN LUCK

The OPTIMA® BlueTop battery will keep you on the water longer. Its patented SPIRALCELL® Technology means more running time, faster recharge, and up to twice the life of traditional marine and RV batteries.

Vibration Resistant

The OPTIMA® is over 15 times more resistant to vibration than other batteries. The constant vibration and jarring from waves can be deadly for traditional marine batteries. The tightly wound construction in OPTIMA® batteries minimizes plate movement and subsequent damage caused by harsh conditions - extending battery life.

Nonspillable/Maintenance Free

The OPTIMA® is spill-proof and maintenance free. Because of its completely sealed case, OPTIMA® batteries are extremely safe. Acid can't leak or spill, making them clean, user-friendly and environmentally sound. In addition, the maintenance free sealed case design eliminates the need to add water or clean terminals. OPTIMA® Blue Top batteries are spill proof, so they can be mounted anyplace inside a boat or RV, in almost any position.

Retains Charge Longer / Recharges
Faster

In the off-season, sometimes marine batteries sit for months at a time and lose their charge. But the OPTIMA® BlueTop battery has such a low rate of self-discharge, that it can go unused for up to one year without recharging, if kept at or below room temperature. And because of its low internal resistance, it recharges faster, getting you back on the water quickly.

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, 6-12 hours approximate.

Rapid Recharge:
Maximum voltage 15.6 volts (regulated).
Maximum current: No limit as long as temperature < 125°F (51.7°C).
Maximum recharge time: Charge until current drops below 1 amp.

Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at
lower voltage).

All limits must be strictly adhered to.

Blue Top Type: D34M / D31M
These batteries are dual purpose. They are designed for engine starting and deep cycling applications and 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, 6-12 hours approximate.

Cyclic Applications:
14.7 volts, no current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below 1 amp, finish with 2 amp constant current for 1 hour for D34M and 3 amp constant current for 1 hour for D31M.

Rapid Recharge:
Maximum voltage 15.6 volts (regulated).
Maximum current: No limit as long as temperature <125°F (51.7°C).
Maximum recharge time: Charge until current drops below 1 amp.

Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at lower voltage).

All limits must be strictly adhered to.