Frequently Asked Questions

When two dissimilar materials, such as positive and negative plates (electrodes), are immersed in an electrolyte (such as a solution of sulfuric acid and water), voltage is generated. The voltage developed is determined by the electrode materials used and the electrolyte used. A lead battery cell produces approximately 2.1 volts. A typical lead battery has six cells and is known as a 12-volt battery.

A complete circuit between the positive and negative terminals results in the chemical reaction between the electrodes and the electrolyte, which generates electrical current. If a battery is rechargeable, such as a lead battery, running current in the opposite direction with a charger will return the electrodes and electrolyte to their original states.

Having a reliable battery is more crucial than you may imagine. It not only provides electricity to start your vehicle, but it also serves other crucial functions in its operation.

The primary function of most vehicle batteries is to power the starter and ignition system, allowing the engine to be cranked or started. The battery also provides additional power when the vehicle's electrical load exceeds the charging system's capacity. This implies that your battery must also provide electricity to all of the electronics and accessories that are installed or plugged into your vehicle or boat. Duracell AGM or Absorbed Glass Mat batteries do not contain free-flowing acid. Special microfiber glass mats absorb acid, preventing the battery from spilling or leaking. This glass mat substance reinforces the battery's interior components, allowing it to resist the demands of several accessory loads.

The battery also functions as a voltage stabilizer in the electrical system. The battery reduces large voltage spikes, which can occur when a vehicle's electrical system is quickly turned off. Without the battery's protection, these abnormally high voltages could destroy other components in the electrical system.

The battery is a component of a system. When installing your new Duracell battery, make sure to verify all related components. When handling batteries, make sure to follow all safety guidelines! To avoid deadly sparks, always unplug grounded cables first and reattach them last!

Do not attempt the following vehicle maintenance without training or proper instructions:

• Check the cables.
• Remove rust from battery holddowns, wires, and trays.
• Verify that the voltage regulator and alternator output satisfy the correct parameters.
• Repair any shorts (loads that are on when they should be off) in the electrical system.
• If a load is left on and the battery becomes discharged, recharge immediately.
• Always tighten the wires and secure the batteries appropriately.

NOTE: Remember to always wear safety glasses and a face shield when working on or near batteries. Always protect your eyes!

What's inside the battery makes a significant difference. A battery gets charged and drained thousands of times over its lifetime.

To ensure the highest quality product, all Duracell batteries are manufactured using cutting-edge automated technology. These batteries are subjected to rigorous testing and quality control tests to assure reliability. All internal components are constructed from the finest raw materials available. These raw ingredients are purified, checked for quality, and performance using cutting-edge equipment.

Advanced technological elements have been implemented throughout the battery design to ensure Duracell's proven reliability and endurance.

Even in cold climates, a battery under the hood of your car can reach dangerously high temperatures. Tighter engine spaces and increased servicing demands have resulted in higher under-hood temperatures than ever before.

When it's cold, engines are more difficult to start, and your battery is put to the test. Its ability to start your automobile can be determined by how well it tolerated increased under-the-hood temperatures.

That is why Duracell Premium vehicle batteries include additional features that allow them to endure higher temperatures. An additional acid reservoir, stronger internal components, and a unique reactive formula are just a few of the characteristics employed to provide improved longevity and maintenance-free performance in any climate.

AGM stands for Absorbed Glass Mat. Duracell AGM batteries have no free-flowing acid. Special microfiber glass mats absorb acid, preventing the battery from spilling or leaking. They are tightly pressed against the battery's power-storage components and have a lower electrical resistance, allowing for faster starting power.

This glass mat material also protects and reinforces the battery's internal components, making it very resistant to vibration and shaking damage. Reinforcing the battery's interior components also increases its capacity to bear the demands of many accessory loads (your vehicle's numerous gadgets). The Duracell battery's original equipment design makes full use of its interior space. This improves efficiency by utilizing all of the available volume and headspace within the battery to boost power and performance. The Original Equipment design also fits better into more applications and requires less retrofitting.

Duracell AGM designs are spill-proof and require no maintenance. They are also among the most durable and reliable battery designs available.

Duracell lead batteries are among the most recycled items in the planet. Lead batteries are more likely to be recycled than glass, metal, or newsprint. In fact, almost all of the battery components may be recycled to create a new battery.

Duracell battery providers participate in a program that recycles batteries at one of the world's most advanced and ecologically friendly facilities.


Make sure to recycle your batteries with someone you can trust. Return it to the Duracell lead battery provider.

Yes. The Duracell AGM design offers additional protection against deep discharge and many cycle damage. This allows for longer life even with repeated charge/discharging cycles. In fact, Duracell AGM batteries offer double the cycle life of normal flooded batteries and recharge faster, giving more auxiliary power for longer.

Yes. Optima uses AGM technology with high-capacity spiral plates to provide power in harsh situations. The spiral and absorbed glass mat design provides 15 times greater vibration resistance than standard systems. Duracell AGM batteries work on the same AGM technology basis and provide similar benefits in terms of improved performance. The Duracell flat plate AGM battery's power-optimized flat plates, DuraMAT™ components, and durability-enhanced design improve cycle capabilities and provide 20x the vibration resistance of standard designs.

Duracell AGM batteries use DuraMAT™ components, a puncture-resistant separator material. This material has a high tensile strength, which increases endurance and allows for 20 times the vibration resistance of a standard flooded battery. DuraMAT's enhanced absorption rate totally suspends the free-flowing electrolyte, resulting in fast-acting power and a spill-proof construction.

A Duracell AGM battery is a valve-regulated lead-acid (VRLA) battery. This has many advantages over flooded lead battery products.

A VRLA battery is a "recombinant" battery. This means that the oxygen normally produced on the positive plates of all lead batteries is absorbed by the negative plate rather than escaping the cell like traditional flooded batteries. This suppresses the production of hydrogen gas normally produced at the negative plate. Water (H2O) is produced instead, retaining the moisture within the battery and virtually eliminating gassing when charged properly. This allows many installation options and is safer to use around sensitive electronic equipment.