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Starting Lighting Ignition (SLI) batteries excel in high start output where only light surface cycling takes place. The Deep-Cycle battery is designed for applications that require deep, repetitive amperage drain, like trolling motors, electric wheelchairs, RV house power, and in start applications where the system load exceeds the alternator output for short durations. 


SLI batteries, are typically used for short bursts of power, such as starting your engine or running light electrical loads. SLI batteries also supply extra power necessary when the vehicle’s electrical load exceeds the supply from the charging system (alternator) and act as a voltage stabilizer in the electrical system, evening out voltage spikes and preventing them from damaging other components in the electrical system.

High performance car audio and emergency vehicle application are examples of system load exceeding the alternator output. When the engine idles and the alternator output drops, the Deep-Cycle battery can continue to support the load with high current and then recharge fast when the engine speed and alternator output increases. Each time this happens, it is a cycle, and this can occur throughout the vehicle’s workday. Public safety vehicles, as well as commercial fleet delivery vehicles and vehicles with added aftermarket accessories find that the OPTIMA Deep-Cycle is the solution to overloaded systems. Boats requiring a Deep-Cycle marine battery can benefit from the use of the OPTIMA BLUETOP® as a dual purpose battery. 

Which Battery to Use:

  • OPTIMA REDTOP® for faster starts and extreme conditions
  • OPTIMA YELLOWTOP® for heavy cycling capability and quick recharging
  • OPTIMA BLUETOP® is a Deep-Cycle marine battery for marine/RV applications requiring dual purpose
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REDTOP, YELLOWTOP, AND BLUETOP Car and Boat Batteries provide Ultimate Power