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Originally Posted by 04DSG Mach
O thats neat. Do the different colors of the tops on the batteries mean anything? Like whats the diff between the yellow and red?
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Red Top: Red Top Starting Battery. Optima Batteries SPIRALCELL design uses high purity lead plates wound with a glass mat that absorbs electrolyte like a sponge. Optima Batteries generate extremely high power, and very low internal resistance.
Yellow Top: The yellow top design uses the same elements that optima used to make the Red Top Starting battery, but it has increased battery plate density. This design gives the yellow top the ability to be deeply discharged and recharged without giving up the batteries high starting ability.
Blue Top: Is for marine applications. Same stuff as above but battery has been verified in life cycle testing to exceed 350 complete discharges and can be fully recharged in as little as one hour about twice as fast as other batteries.