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Optima Yellowtop Deep Cycle Car Battery Group Size 34/78DT 9151189
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  • Part #: YEL34/78|
  • SKU: 9151189

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    • Featuring AGM battery technology, this premium automotive battery will tolerate repeated deep discharges and provide an overall longer service life.
    • A true dual-purpose battery, the Optima Yellowtop line promises first-rate cranking intensity and top of the line cycling potential.

Optima Yellowtop Deep Cycle Car Battery Group Size 34/78DT

The ultimate performance battery, the Optima Yellowtop Deep Cycle Car Battery is the best in class battery replacement option for your trucks with winches, commercial vehicles, heavy equipment and cars with souped-up electronics and audio. Optima batteries promise impressive high-power delivery and extreme resistance to the most common causes of battery failure.
  • Featuring AGM battery technology, this premium automotive battery will tolerate repeated deep discharges and provide an overall longer service life.
  • A true dual-purpose battery, the Optima Yellowtop line promises first-rate cranking intensity and top of the line cycling potential.
  • You can rely on this replacement battery to provide ultimate starting and deep-cycle power with every start.
  • The Optima battery provides deep cycle power designed for demanding off-road and car audio applications.
  • Low internal resistance provides more consistent power output and faster recharges.
  • The Optima Yellowtop automotive battery can repeatedly be brought back from deep power drains to full charge, so it can power plenty of electronics and still start you up time after time.
  • Optima batteries come with a 3-year free replacement guarantee - but odds are you will not need it!
  • To prolong the health of your car battery, don't forget to pick up your Battery Chargers, Battery Terminals & Battery Maintainers. Our wide assortment of subwoofers, amplifiers and head units will pair perfectly with this battery replacement option.
  • The Pep Boys Say: "Optima Yellowtop batteries provide reliable power for both starting and deep cycle application and do so under the most extreme heat, cold and high vibration environments. Optima delivers performance."

Wet or Dry
Reserve Capacity (minutes)
CCA,Group Size,Battery Type,Battery Usage
Group Size
Right Or Left Hand Positive
Terminal Type
Dual SAE/ GM
Length (in.)
Width (in.)
Cold Cranking Amps (CCA) @ 0F
Height (in.)
Weight (lbs)
Cranking Amps @ 32F
Battery Usage
Truck/Car Battery
Group Size
Battery Type


Optima Yellowtop Deep Cycle Car Battery Group Size 34/78DT is rated 4.9 out of 5 by 25.
Rated 5 out of 5 by from Outstanding power I replaced another brand of AGM battery in my ParkIt360 which I use to move my car trailers when I disconnect them from my truck. The last battery could never move the flatbed car trailer up the slight grade of the sidewalk. This battery used the immense torque in the electric motor and made the job without my personal efforts. I use Optima batteries in my 8 classic cars as well as my personal driver.
Date published: 2016-09-16
Rated 5 out of 5 by from Great Battery I replaced my old battery with the Optima Yellow Top as I am installing a winch & bumper on my truck & wanted the extra capacity of a deep cycle battery with the ability to be used for multiple starts & stops throughout a day of off road adventure without any problems. This battery has worked very well to fill my needs without any issues or having to wait for it to recharge. I do recommend this battery!
Date published: 2016-08-06
Rated 4 out of 5 by from Optima battery Great product good price and service
Date published: 2015-07-10
Rated 5 out of 5 by from Best battery ever I had a friend give me one in 2003 I still have it in 2015 it is in my daily driver. Yes it is pricey but now all my vehicles have one. I am a buyer for life.
Date published: 2015-07-10
Rated 5 out of 5 by from When Only the best will work..Optima is the one. Have used Optima Batteries many times and are truly the longest lasting performance batteries.
Date published: 2015-06-06
Rated 5 out of 5 by from optima Battery are the best had optima battery for years on all my car on road and offroad keep a trickle charge on them and they will last for years.
Date published: 2015-04-28
Rated 5 out of 5 by from awesome battery great price fast installation excellent product!!!
Date published: 2015-02-03
Rated 5 out of 5 by from Excellent Product Excellent product. I have used this product previously.
Date published: 2015-01-16
Rated 5 out of 5 by from this product stands up to the challenge. This is a great battery. It work well if you have allot going on in your vehicle. Ie. Powered everything, stereo systems or just simply more power.
Date published: 2015-01-01
Rated 5 out of 5 by from powerfull battery Upgraded from the red optima to the yellow. My red optima was 11 years old and was the best battery I have had in a vehicle but was starting to fade. The yellow optima has more power with the key off. I have many accessories which require more power. This battery takes care of all my additional power needs.
Date published: 2014-12-23
Rated 5 out of 5 by from Pep Boys was great at honoring Warranty ! I've used Optima batteries in all my vehicles, in my Vette and when I was in Alaska in my Navigator ! Can't beat them !!!
Date published: 2014-11-30
Rated 5 out of 5 by from Best Battery Anywhere I was tired of going through cheaper batteries every couple of years. Decided it was time to spend the money on a good battery, and with the discounts I got through, it didn't hurt the wallet that bad. Would recommend an Optima battery to everyone!
Date published: 2014-10-24
Rated 5 out of 5 by from So glad that I chose this one! This Yellow Top is a phenomenal battery! I am glad I decided on the purchase.
Date published: 2014-09-20
Rated 5 out of 5 by from Awesome Battery I would not hesitate to buy this battery. They are built like a truck and they always start. You really need this in today's vehicle that has a ton of accessories that drain your battery all the time. It may be expensive, however you will get your money's worth in both longevity and safety. You do not want your family stuck somewhere with a dead battery. These things will start even if you leave the lights on for a week.
Date published: 2014-08-20
Rated 4 out of 5 by from Good battery and only battery I use for my vehicle Great battery
Date published: 2014-08-12
Rated 5 out of 5 by from Optima Yellow Top Batteries The Optima yellow top battery is a great battery if you have any added accessories to your vehicle. I use the Optima battery because of my car audio system, and each battery that I've had has lasted me 4 to 5 years. They are the best bang for the buck.
Date published: 2014-03-14
Rated 5 out of 5 by from Battery works Great!! Due to the extensive electronics in my vehicle, Yukon Denali, the Yellow Top battery made everything work better. I know it seems crazy, but my mileage did improve. The battery in the Denali was working fine but I swapped in the Yellow Top and moved the Denali battery into another vehicle which needed a new battery. I was so satisfied, my son with an extensive sound system in his Firebird did the exact same thing with his vehicle. The Yellow Top does seem to be necessary for high electronics drain. I believe it helps the sensors throughout the vehicle maintain a constant voltage and doe not require a large capacitor that some amps need to maintain constant voltage. Just guessing, but I do believe what I see.
Date published: 2013-10-31
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