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Inside the unique shell of the OPTIMA® battery is a radically superior internal design. The structure of conventional batteries — lead plates hanging in pools of acid — requires those lead plates to provide their own structural support. To accomplish this, the lead is diluted with high percentages of inert stiffening metals that rob those conventional batteries of performance.

The unique engineering concept of the OPTIMA battery uses long thin layers of lead wound into tight spiral cells. Because they're tightly supported on all sides by high strength cylindrical cell casings, the lead ribbons of the OPTIMA aren't required to provide structural strength, so they can be made from high-purity, high-performance lead. This translates into dramatically lower internal resistance and higher output at temperature extremes. OPTIMA batteries can be fully recharged in about an hour, twice as fast as conventional batteries. They also can sit unused four times longer than other batteries, losing less than half a volt in over 6 months of nonuse.

An absorbent glass mat, alternating with the layers of lead, holds electrolyte in contact with the OPTIMA'S greater lead surface area. This laminated construction provides far more active surface area in the OPTIMA. It also supports a thicker layer of plate paste, for prolonged service life — typically half again to twice the life of conventional batteries. This technology is called "AGM" for "Absorbed Glass Mat" and it is a major advance in battery design.

The OPTIMA'S revolutionary Spiralcell® design produces more power and increased energy, resulting in fast, reliable starts even in extreme conditions. Because OPTIMA is the only battery with Spiralcell construction, no other battery offers OPTIMA'S combination of performance and reliability in land and marine applications. OPTIMA delivers power!