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25% Off Online Orders of Select Parts and Accessories. Enter Promo Code 25PEP in Cart

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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code 25PEP at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 12/12/16. Online orders scheduled for in-store pick up must be completed by closing on 12/11/16 for discount to apply.

Free Shipping on Orders Over $50 or in-store pickup

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  • Part #: 29HM850PS|
  • SKU: 9073843

Available today

Pay in Store Available

    • ProStart lead acid batteries are designed formulated to ensure negative active paste material is resistant to flaking and shedding over time.
    • High Performance all-purpose marine deep cycle & starting battery
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

ProStart Marine & RV / Premium Deep Cycle & Starting Lead Acid Marine Battery

ProStart marine batteries feature advanced technology for prolonged battery life and performance. A durable and moderately priced option for your battery replacement needs, the ProStart marine battery line is trusted and true.
  • ProStart lead acid batteries are designed formulated to ensure negative active paste material is resistant to flaking and shedding over time.
  • High Performance all-purpose marine deep cycle & starting battery
  • Designed for deep cycle & starting performance in inboard and outboard marine engines, the ProStart lead acid marine battery is a boat battery you can trust.
  • This replacement battery is constructed with an alloy which decreases battery failure due to high heat and delivers reliable starts in the coldest climates.
  • The ProStart marine battery is fashioned with optimized internal construction for superior durability.
  • The extreme bond to the grid improves overall performance and increases battery life.
  • Long-life alloys provide protection against battery corrosion. The ProStart line is an excellent battery replacement option.
  • ProStart marine batteries offer a 12 month free replacement warranty. This battery has powerful marine cranking amps and provides plenty of starting and deep cycle power when you need it in the cold of winter or the heat of summer.
  • To prolong the health of your marine battery, don't forget to pick up your Battery Charger, Battery Cables & Battery Testers.
  • The Pep Boys Say:"ProStart marine batteries are designed for the serious sportsman that is looking for reliable starting and deep cycle power."
  • This item must be picked up in the store as it may contain materials which are flammable or corrosive.

Reserve Capacity (minutes)
Group Size
Right Or Left Hand Positive
Terminal Type
Dual SAE & 5/16" Stainless Stud
Length (in.)
Width (in.)
Cold Cranking Amps (CCA) @ 0F
Height (in.)
Weight (lbs)


Rated 3 out of 5 by 3 reviewers.
Rated 3 out of 5 by It may work The employees did their very best, however, they were not able to provide the items I wanted. In October 2016 I purchased two deep cycle batteries for an RV. Because of past experiences I wanted two batteries with the same manufacturing dates. I was originally offered one with a date of 2014 (that had set on their shelf al that time and had a different post configuration) and one with a 04-2015 date. Following a call by an employee to a near by store I was told they could have the batteries with the same recent dates of 08-2016 transferred to this store within 24 hours. I returned to the local store to find that the batteries were actually made about eight month apart (the newest was 5 months old). Because I was leaving on vacation, I did purchase these. However, now I find that even though the batteries are fully charged and then disconnected from the RV, their voltages differs by as much as about one volt, which I believe will result in the lower voltage battery have a adverse affect on the other when connected in parallel. December 9, 2016
Rated 1 out of 5 by won't hold charge Bought for boat. One of three. Wouldn't hold charge after 13 mons. 30 days out of 1 yr replacement they me to pound salt. Done with Pep Boys. June 14, 2016
Rated 5 out of 5 by plenty of power Plenty of power to run 12 volt system in our RV Would buy again September 7, 2014
  • 2016-12-10 T09:26:52.534-06:00
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