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Optima Yellow Top D51R

By: Amy Livingston on September 28, 2017

Bottom Line The Optima Yellow Top D51R is a dual-purpose battery, offering both the cranking power to start your car reliably and deep cycling capabilities to run power-hungry systems like high-end sound equipment even when the car is off. In tests, it also gets top marks for starting well in cold weather.
Pros
  • Powers high-drain systems
  • Starts in cold temperatures
  • Resistant to vibration
Cons
  • Lower reserve capacity
  • Some complaints of failures under warranty